muen/linux.git
2 years agoMerge tag 'actions-arm64-soc-for-4.20' of git://git.kernel.org/pub/scm/linux/kernel...
Arnd Bergmann [Mon, 1 Oct 2018 13:58:21 +0000 (15:58 +0200)]
Merge tag 'actions-arm64-soc-for-4.20' of git://git./linux/kernel/git/afaerber/linux-actions into next/soc

Actions Semi arm64 SoC for v4.20

This updates and extends the MAINTAINERS entry, adding Mani.
It also selects PINCTRL in Kconfig.

* tag 'actions-arm64-soc-for-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/afaerber/linux-actions:
  arm64: actions: Enable PINCTRL in platforms Kconfig
  MAINTAINERS: Add entry for Actions Semi Owl SoCs DMA driver
  MAINTAINERS: Add entry for Actions Semiconductor Owl I2C driver
  MAINTAINERS: Update clock binding entry for Actions Semi Owl SoCs
  MAINTAINERS: Add Actions Semi S900 clk entries
  MAINTAINERS: Add reviewer for ACTIONS platforms

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2 years agoMAINTAINERS: fix pattern in ARM/Synaptics berlin SoC section
Jisheng Zhang [Sat, 29 Sep 2018 05:00:03 +0000 (13:00 +0800)]
MAINTAINERS: fix pattern in ARM/Synaptics berlin SoC section

Berlin SoC files has been moved from marvell dir to synaptics dir, but
commit bc52497a595d ("MAINTAINERS: update entry for ARM/berlin") didn't
update the dir accordingly. This patch fixes it.

From another side, new derivative SoCs from Synaptics may not be named
as berlin*, so let's update the entries accordingly.

Fixes: bc52497a595d ("MAINTAINERS: update entry for ARM/berlin")
Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
Reported-by: Joe Perches <joe@perches.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2 years agoMAINTAINERS: Drop dt-bindings/genpd/k2g.h
Nishanth Menon [Fri, 28 Sep 2018 22:46:15 +0000 (17:46 -0500)]
MAINTAINERS: Drop dt-bindings/genpd/k2g.h

Drop include/dt-bindings/genpd/k2g.h which disappeared from kernel tree
some time back, however MAINTAINERS file was missed to be updated.

Fixes: d16645054d2f ("dt-bindings: Drop k2g genpd device ID macros")
Cc: Rob Herring <robh@kernel.org>
Cc: Dave Gerlach <d-gerlach@ti.com>
Cc: Santosh Shilimkar <ssantosh@kernel.org>
Cc: Tero Kristo <t-kristo@ti.com>
Reported-by: Joe Perches <joe@perches.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Acked-by: Santosh Shilimkar <ssantosh@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2 years agoarm64: actions: Enable PINCTRL in platforms Kconfig
Manivannan Sadhasivam [Wed, 4 Apr 2018 17:22:51 +0000 (22:52 +0530)]
arm64: actions: Enable PINCTRL in platforms Kconfig

Select PINCTRL for Actions Semi SoCs.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2 years agoMAINTAINERS: Add entry for Actions Semi Owl SoCs DMA driver
Manivannan Sadhasivam [Fri, 21 Sep 2018 19:06:53 +0000 (12:06 -0700)]
MAINTAINERS: Add entry for Actions Semi Owl SoCs DMA driver

Add entry for Actions Semi Owl SoCs DMA driver under ARM/ACTIONS.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2 years agoMAINTAINERS: Add entry for Actions Semiconductor Owl I2C driver
Manivannan Sadhasivam [Wed, 1 Aug 2018 18:02:32 +0000 (23:32 +0530)]
MAINTAINERS: Add entry for Actions Semiconductor Owl I2C driver

Add entry for Actions Semiconductor Owl I2C driver under ARM/ACTIONS.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2 years agoMAINTAINERS: Update clock binding entry for Actions Semi Owl SoCs
Manivannan Sadhasivam [Sat, 29 Sep 2018 07:32:44 +0000 (13:02 +0530)]
MAINTAINERS: Update clock binding entry for Actions Semi Owl SoCs

commit d0e45d686a3e ("dt-bindings: clock: Add S700 support for Actions
Semi Soc's")'

renamed the clock binding for Actions Semi Owl SoCs from
actions,s900-cmu.txt to actions,owl-cmu.txt inorder to accommodate all
members of Owl family SoCs. Hence, update the relevant entry in
MAINTAINERS file.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2 years agoMerge tag 'renesas-arm-soc-for-v4.20' of git://git.kernel.org/pub/scm/linux/kernel...
Arnd Bergmann [Fri, 28 Sep 2018 20:11:50 +0000 (22:11 +0200)]
Merge tag 'renesas-arm-soc-for-v4.20' of git://git./linux/kernel/git/horms/renesas into next/soc

Renesas ARM Based SoC Updates for v4.20

* Rework the PMIC IRQ line quirk to use DT rather than hard coded topology
* Convert to SPDX identifiers
* Convert to using %pOFn instead of device_node.name
* Remove the no longer needed ARCH_SHMOBILE Kconfig symbol
* RZ/G1N (r8a7744) SoC: Add basic SoC and debug-ll support
* R-Car H1 (r8a7779) SoC: remove unused includes

* tag 'renesas-arm-soc-for-v4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  ARM: shmobile: Rework the PMIC IRQ line quirk
  ARM: debug-ll: Add support for r8a7744
  ARM: shmobile: r8a7744: Basic SoC support
  ARM: shmobile: convert to SPDX identifiers
  ARM: shmobile: Convert to using %pOFn instead of device_node.name
  ARM: shmobile: Remove the ARCH_SHMOBILE Kconfig symbol
  ARM: shmobile: r8a7779: Remove unused includes

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2 years agoARM: Assume maintainership of ARM reference designs
Linus Walleij [Fri, 28 Sep 2018 11:42:50 +0000 (13:42 +0200)]
ARM: Assume maintainership of ARM reference designs

With this I assume maintainership of the Integrator, Versatile
and RealView ARM reference machines.

It's no big secret that I've been maintaining them for years,
but might as well make it official so I get the mails and
don't miss anything.

I have also included some drivers that are closely associated
with the ARM reference designs and yet orphaned in the
MAINTAINERS file. I can surely maintain them too, or route
the question to the right people so it doesn't fall on the
floor of upward to the subsystem maintainers who have too much
to do already as it is.

Cc: Russell King <linux@armlinux.org.uk>
Cc: Rob Herring <robh@kernel.org>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Stephen Boyd <sboyd@kernel.org>
Cc: Mark Brown <broonie@kernel.org>
Cc: Brian Norris <computersforpeace@gmail.com>
Acked-by: Wolfram Sang <wsa@the-dreams.de>
Acked-by: Olof Johansson <olof@lixom.net>
Acked-by: Michael Turquette <mturquette@baylibre.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2 years agoMerge tag 'omap-for-v4.20/omap1-signed' of git://git.kernel.org/pub/scm/linux/kernel...
Arnd Bergmann [Fri, 28 Sep 2018 15:58:52 +0000 (17:58 +0200)]
Merge tag 'omap-for-v4.20/omap1-signed' of git://git./linux/kernel/git/tmlind/linux-omap into next/soc

A series of omap1 gpio changes for ams-delta

Janusz Krzysztofik has cleaned up ams-delta gpio usage along with
generic gpio framework improvments. This series contains the omap1
specific clean-up for ams-delta modem and unused gpios.

Note that this conflicts with the gpio-omap changes queued into
an immutable gpio branch ib-omap for the gpio-omap.h header file.
The merge resolution is to drop the IS_BUILTIN(CONFIG_GPIO_OMAP)
section and keep the #endif tagged for __ASSEMBLER__.

* tag 'omap-for-v4.20/omap1-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP1: ams-delta: Don't request unused GPIOs
  ARM: OMAP1: ams-delta-fiq: Use <linux/platform_data/gpio-omap.h>
  ARM: OMAP1: ams-delta: register MODEM device earlier
  ARM: OMAP1: ams-delta: initialize latch2 pins to safe values
  ARM: OMAP1: ams-delta: assign MODEM IRQ from GPIO descriptor

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2 years agoMerge tag 'omap-for-v4.20/soc-signed' of git://git.kernel.org/pub/scm/linux/kernel...
Arnd Bergmann [Fri, 28 Sep 2018 15:57:27 +0000 (17:57 +0200)]
Merge tag 'omap-for-v4.20/soc-signed' of git://git./linux/kernel/git/tmlind/linux-omap into next/soc

SoC changes for omap variants

These changes improve support for clkctrl clocks to deal with
split memory ranges for clkctrl providers. And to use %pOFn
instead of device_node.name.

* tag 'omap-for-v4.20/soc-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP2+: Convert to using %pOFn instead of device_node.name
  ARM: OMAP2+: hwmod_core: improve the support for clkctrl clocks

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2 years agoARM: support big-endian for the virt architecture
Jason A. Donenfeld [Wed, 26 Sep 2018 13:51:10 +0000 (15:51 +0200)]
ARM: support big-endian for the virt architecture

This architecture, used for running in QEMU, runs just fine when
compiled in big-endian mode. So enable it. This is enabled in exactly
the same way that it is for other platforms (such as vexpress) that also
support big-endian mode in QEMU successfully.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2 years agoMerge tag 'zynq-soc-for-v4.20' of https://github.com/Xilinx/linux-xlnx into next/soc
Arnd Bergmann [Wed, 26 Sep 2018 15:10:50 +0000 (17:10 +0200)]
Merge tag 'zynq-soc-for-v4.20' of https://github.com/Xilinx/linux-xlnx into next/soc

ARM: Xilinx Zynq SoC patches for v4.20

- Convert to using %pOFn instead of device_node.name in slcr driver

* tag 'zynq-soc-for-v4.20' of https://github.com/Xilinx/linux-xlnx:
  ARM: zynq: Convert to using %pOFn instead of device_node.name

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2 years agoMerge tag 'at91-4.20-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/at91/linux...
Olof Johansson [Tue, 25 Sep 2018 20:33:02 +0000 (13:33 -0700)]
Merge tag 'at91-4.20-soc' of git://git./linux/kernel/git/at91/linux into next/soc

AT91 SoC for 4.20

 - rename MAINTAINERS entries and change maintainers
 - two pm cleanups

* tag 'at91-4.20-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/at91/linux:
  MAINTAINERS: sdhci: move the Microchip entry to proper location
  MAINTAINERS: move former ATMEL entries to proper MICROCHIP location
  MAINTAINERS: remove the / ATMEL string from MICROCHIP entries
  MAINTAINERS: iio: add co-maintainer to SAMA5D2-compatible ADC driver
  MAINTAINERS: pwm: add entry for Microchip pwm driver
  MAINTAINERS: dmaengine: add files to Microchip dma entry
  MAINTAINERS: USB: change maintainer for Microchip USBA gadget driver
  MAINTAINERS: ASoC: change maintainer for Microchip ALSA drivers
  MAINTAINERS: media: change Microchip ISI, ISC maintainers
  MAINTAINERS: update entry for Microchip NAND driver support
  MAINTAINERS: ARM: at91: add co-maintainer for ARM/Microchip
  ARM: at91: pm: call put_device instead of of_node_put in at91_pm_config_ws
  ARM: at91: pm: remove pm_bu initialization in at91_pm_backup_init()

Signed-off-by: Olof Johansson <olof@lixom.net>
2 years agoMAINTAINERS: sdhci: move the Microchip entry to proper location
Nicolas Ferre [Wed, 29 Aug 2018 14:31:47 +0000 (16:31 +0200)]
MAINTAINERS: sdhci: move the Microchip entry to proper location

All SDHCI controller drivers are gathered at the same place, add the
Microchip one there.

Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2 years agoMAINTAINERS: move former ATMEL entries to proper MICROCHIP location
Nicolas Ferre [Wed, 29 Aug 2018 14:31:46 +0000 (16:31 +0200)]
MAINTAINERS: move former ATMEL entries to proper MICROCHIP location

Standardize the Microchip / Atmel entries with the same form and move them
so that they are all located at the same place, under the newer MICROCHIP
banner.
Only modifications to the titles of the entries are done in this patch.

Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2 years agoMAINTAINERS: remove the / ATMEL string from MICROCHIP entries
Nicolas Ferre [Wed, 29 Aug 2018 14:31:45 +0000 (16:31 +0200)]
MAINTAINERS: remove the / ATMEL string from MICROCHIP entries

No need to keep this additional string as it can puzzle people
while adding new driver's entries.
Move the NAND entry to keep it alphabetically ordered.

Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2 years agoMAINTAINERS: iio: add co-maintainer to SAMA5D2-compatible ADC driver
Nicolas Ferre [Wed, 29 Aug 2018 14:31:44 +0000 (16:31 +0200)]
MAINTAINERS: iio: add co-maintainer to SAMA5D2-compatible ADC driver

Add Eugen as co-maintainer with Ludovic of Microchip SAMA5D2-compatible
ADC driver.
Also add the binding documentation/include as file pattern.

Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2 years agoMAINTAINERS: pwm: add entry for Microchip pwm driver
Nicolas Ferre [Wed, 29 Aug 2018 14:31:43 +0000 (16:31 +0200)]
MAINTAINERS: pwm: add entry for Microchip pwm driver

Add the entry that was missing for pwm-atmel.c driver. Add binding file
as well.

Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2 years agoMAINTAINERS: dmaengine: add files to Microchip dma entry
Nicolas Ferre [Wed, 29 Aug 2018 14:31:42 +0000 (16:31 +0200)]
MAINTAINERS: dmaengine: add files to Microchip dma entry

In Microchip DMA (HDMA actually) entry, add the missing files for
better matching with get_maintainer.pl tool.

Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2 years agoMAINTAINERS: USB: change maintainer for Microchip USBA gadget driver
Nicolas Ferre [Wed, 29 Aug 2018 14:31:41 +0000 (16:31 +0200)]
MAINTAINERS: USB: change maintainer for Microchip USBA gadget driver

Hand over this USB gadget driver to Cristian: atmel_usba.

Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2 years agoMAINTAINERS: ASoC: change maintainer for Microchip ALSA drivers
Nicolas Ferre [Wed, 29 Aug 2018 14:31:40 +0000 (16:31 +0200)]
MAINTAINERS: ASoC: change maintainer for Microchip ALSA drivers

Hand over to Codrin for Microchip Audio SoC drivers in "atmel"
directory.

Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2 years agoMAINTAINERS: media: change Microchip ISI, ISC maintainers
Nicolas Ferre [Wed, 29 Aug 2018 14:31:39 +0000 (16:31 +0200)]
MAINTAINERS: media: change Microchip ISI, ISC maintainers

For ISC, Songjun is not with Microchip anymore, his address shouldn't be
reachable.
For ISI, Eugen can handle the maintenance now.

Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2 years agoMAINTAINERS: update entry for Microchip NAND driver support
Nicolas Ferre [Wed, 29 Aug 2018 14:31:38 +0000 (16:31 +0200)]
MAINTAINERS: update entry for Microchip NAND driver support

Replace the Microchip/Atmel NAND controller driver maintainer
by removing Josh and adding Tudor.

Cc: Josh Wu <rainyfeeling@outlook.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2 years agoMAINTAINERS: ARM: at91: add co-maintainer for ARM/Microchip
Nicolas Ferre [Wed, 29 Aug 2018 14:31:37 +0000 (16:31 +0200)]
MAINTAINERS: ARM: at91: add co-maintainer for ARM/Microchip

Add Ludovic as a new co-maintainer for the AT91 Microchip ARM
sub-architecture.
Add the newly created kernel.org group git tree that we will use
from now on.

Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2 years agoARM: at91: pm: call put_device instead of of_node_put in at91_pm_config_ws
zhong jiang [Thu, 16 Aug 2018 10:26:22 +0000 (18:26 +0800)]
ARM: at91: pm: call put_device instead of of_node_put in at91_pm_config_ws

of_find_device_by_node takes a reference to the struct device when it
finds a match via get_device. but it fails to put_device in
at91_pm_config_ws, for_each_matching_node_and_match will get and put
the node properly, there is no need to call the of_put_node. Therefore,
just call put_device instead of of_node_put in at91_pm_config_ws.

Fixes: d7484f5c6b3b ("ARM: at91: pm: configure wakeup sources for ULP1 mode")
Suggested-by: Claudiu Beznea <Claudiu.Beznea@microchip.com>
Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2 years agoMAINTAINERS: Update stm32 entry
Benjamin Gaignard [Fri, 21 Sep 2018 14:29:03 +0000 (16:29 +0200)]
MAINTAINERS: Update stm32 entry

Add mailing list for stm32 architecture.
Add "stm" pattern to not miss some drivers/directories when asking for maintainers.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2 years agoMAINTAINERS: Add Actions Semi S900 clk entries
Manivannan Sadhasivam [Thu, 31 May 2018 09:47:34 +0000 (15:17 +0530)]
MAINTAINERS: Add Actions Semi S900 clk entries

Add S900 clk entries under ARCH_ACTIONS.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2 years agoMAINTAINERS: Add reviewer for ACTIONS platforms
Manivannan Sadhasivam [Wed, 4 Apr 2018 17:22:57 +0000 (22:52 +0530)]
MAINTAINERS: Add reviewer for ACTIONS platforms

Since I'll be working on improving support for ACTIONS platforms, adding
myself as the reviewer.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2 years agoARM: OMAP1: ams-delta: Don't request unused GPIOs
Janusz Krzysztofik [Mon, 10 Sep 2018 19:50:08 +0000 (21:50 +0200)]
ARM: OMAP1: ams-delta: Don't request unused GPIOs

GPIOs with no kernel drivers can still be used from user space, don't
request them from the board file.

Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2 years agoARM: OMAP1: ams-delta-fiq: Use <linux/platform_data/gpio-omap.h>
Janusz Krzysztofik [Mon, 10 Sep 2018 17:47:22 +0000 (19:47 +0200)]
ARM: OMAP1: ams-delta-fiq: Use <linux/platform_data/gpio-omap.h>

Instead of defining symbols already defined in
linux/platform_data/gpio-omap.h, use that header file.

Since we include the header into an assembler code, prevent C only bits
from being read in.

Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2 years agoARM: OMAP1: ams-delta: register MODEM device earlier
Janusz Krzysztofik [Sun, 9 Sep 2018 23:44:19 +0000 (01:44 +0200)]
ARM: OMAP1: ams-delta: register MODEM device earlier

Amstrad Delta MODEM device used to be initialized at arch_initcall
before it was once moved to late_initcall by commit f7519d8c8290 ("ARM:
OMAP1: ams-delta: register latch dependent devices later"). The purpose
of that change was to postpone initialization of devices which depended
on latch2 pins until latch2 converted to GPIO device was ready.

After recent fixes to GPIO handling, it was possible to moove
registration of most of those device back to where they were before.
The same can be safely done with the MODEM device as initialization
of GPIO pins it depends on was moved to machine_init by preceding
patch.

Move registration of the MODEM device to arch_initcall_sync, not to
arch_initcall, so it is never exposed to potential conflict in
registration order hazard against OMAP serial ports.

Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2 years agoARM: OMAP1: ams-delta: initialize latch2 pins to safe values
Janusz Krzysztofik [Sun, 9 Sep 2018 23:44:18 +0000 (01:44 +0200)]
ARM: OMAP1: ams-delta: initialize latch2 pins to safe values

Latch2 pins control a number of on-board devices, namely LCD, NAND,
MODEM and CODEC.  Those pins used to be initialized with safe values
from init_machine before that operation was:
1) moved to late_initcall in preparation for conversion of latch2 to
GPIO device - see commit f7519d8c8290 ("ARM: OMAP1: ams-delta: register
latch dependent devices later"),
2) replaced with non-atomic initialization performed by means of
gpio_request_array() - see commit 937eb4bb0058 ("ARM: OMAP1: ams-delta:
convert latches to basic_mmio_gpio"),
3) made completely asynchronous by delegation of GPIO request
operations performed on subsets of pins to respective device drivers in
subsequent commits.

One visible negative result of that disintegration was corrupt keyboard
data reported by serio driver, recently fixed by commit 41f8fee385a0
("ARM: OMAP1: ams-delta: Hog "keybrd_dataout" GPIO pin").

Moreover, initialization of LATCH2_PIN_MODEM_CODEC still performed with
ams_delta_latch2_write() wrapper from late_init() is now done on not
requested GPIO pin.

Reintroduce atomic initialization of latch2 pins at machine_init to
prevent from random values potentially corrupting NAND data or maybe
even destroing other hardware.  Also take care of MODEM/CODEC related
pins so MODEM device probe succeeds even if latch2 GPIO device or
dependent regulator is not ready and CODEC can be reached over the
MODEM even if audio driver doesn't take control over
LATCH2_PIN_MODEM_CODEC.

Once done, remove the no longer needed GPIO based implementation of
ams_delta_latch_write() and its frontend macro.

Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
[tony@atomide.com: updated for the header location to remove dependency]
Signed-off-by: Tony Lindgren <tony@atomide.com>
2 years agoARM: OMAP1: ams-delta: assign MODEM IRQ from GPIO descriptor
Janusz Krzysztofik [Sun, 9 Sep 2018 23:44:17 +0000 (01:44 +0200)]
ARM: OMAP1: ams-delta: assign MODEM IRQ from GPIO descriptor

Don't request MODEM IRQ GPIO by its global number in
ams_delta_modem_init().  Instead, obtain its GPIO descriptor
and assign related IRQ to the MODEM.  Do that from
omap_gpio_deps_init(), where the chip is already looked up.  Then, in
ams_delta_modem_init(), just check for the IRQ number having been
already assigned.

Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2 years agoARM: shmobile: Rework the PMIC IRQ line quirk
Marek Vasut [Tue, 18 Sep 2018 12:23:40 +0000 (14:23 +0200)]
ARM: shmobile: Rework the PMIC IRQ line quirk

Rather than hard-coding the quirk topology, which stopped scaling,
parse the information from DT. The code looks for all compatible
PMICs -- da9063 and da9210 -- and checks if their IRQ line is tied
to the same pin. If so, the code sends a matching sequence to the
PMIC to deassert the IRQ.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be> (on Koelsch)
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2 years agoARM: debug-ll: Add support for r8a7744
Biju Das [Mon, 17 Sep 2018 15:06:30 +0000 (16:06 +0100)]
ARM: debug-ll: Add support for r8a7744

Enable low-level debugging support for RZ/G1N (R8A7744). RZ/G1N uses
SCIF0 for the debug console.

Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2 years agoARM: shmobile: r8a7744: Basic SoC support
Biju Das [Tue, 11 Sep 2018 10:12:50 +0000 (11:12 +0100)]
ARM: shmobile: r8a7744: Basic SoC support

Add minimal support for the RZ/G1N (R8A7744) SoC.

Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2 years agoARM: shmobile: convert to SPDX identifiers
Kuninori Morimoto [Fri, 7 Sep 2018 01:43:23 +0000 (01:43 +0000)]
ARM: shmobile: convert to SPDX identifiers

This patch updates license to use SPDX-License-Identifier
instead of verbose license text.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2 years agoARM: OMAP2+: Convert to using %pOFn instead of device_node.name
Rob Herring [Tue, 28 Aug 2018 15:44:27 +0000 (10:44 -0500)]
ARM: OMAP2+: Convert to using %pOFn instead of device_node.name

In preparation to remove the node name pointer from struct device_node,
convert printf users to use the %pOFn format specifier.

Cc: "Benoît Cousson" <bcousson@baylibre.com>
Cc: Paul Walmsley <paul@pwsan.com>
Cc: linux-omap@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Rob Herring <robh@kernel.org>
[tony@atomide.com: updated against clkctrl and rt_idx changes]
Signed-off-by: Tony Lindgren <tony@atomide.com>
2 years agoARM: OMAP2+: hwmod_core: improve the support for clkctrl clocks
Tero Kristo [Fri, 31 Aug 2018 15:01:23 +0000 (18:01 +0300)]
ARM: OMAP2+: hwmod_core: improve the support for clkctrl clocks

This patch adds support for split memory ranges for clkctrl providers.
This is necessary to support the coming clockdomain based split of
clkctrl provider ranges, instead of the current CM instance based one.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2 years agoMerge commit '1dbcb97c656eed1a244c960b8b3a469c3d20ce7b' into omap-for-v4.20/soc
Tony Lindgren [Fri, 7 Sep 2018 17:49:43 +0000 (10:49 -0700)]
Merge commit '1dbcb97c656eed1a244c960b8b3a469c3d20ce7b' into omap-for-v4.20/soc

2 years agoARM: u300: Delete dummy SPI chip
Linus Walleij [Wed, 5 Sep 2018 09:18:28 +0000 (11:18 +0200)]
ARM: u300: Delete dummy SPI chip

It's been told to me a few times that this kernel module
should not exist, instead we should use the loopback test
from userspace if need be. If a kernel module is required
for testing SPI, it should be generic and put in
drivers/spi/*.

Delete this driver.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
2 years agoARM: zynq: Convert to using %pOFn instead of device_node.name
Rob Herring [Tue, 28 Aug 2018 01:52:04 +0000 (20:52 -0500)]
ARM: zynq: Convert to using %pOFn instead of device_node.name

In preparation to remove the node name pointer from struct device_node,
convert printf users to use the %pOFn format specifier.

Cc: Michal Simek <michal.simek@xilinx.com>
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2 years agoLinux 4.19-rc2 v4.19-rc2
Linus Torvalds [Sun, 2 Sep 2018 21:37:30 +0000 (14:37 -0700)]
Linux 4.19-rc2

2 years agoMerge tag 'devicetree-fixes-for-4.19' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 2 Sep 2018 17:56:01 +0000 (10:56 -0700)]
Merge tag 'devicetree-fixes-for-4.19' of git://git./linux/kernel/git/robh/linux

Pull devicetree updates from Rob Herring:
 "A couple of new helper functions in preparation for some tree wide
  clean-ups.

  I'm sending these new helpers now for rc2 in order to simplify the
  dependencies on subsequent cleanups across the tree in 4.20"

* tag 'devicetree-fixes-for-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
  of: Add device_type access helper functions
  of: add node name compare helper functions
  of: add helper to lookup compatible child node

2 years agoMerge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Linus Torvalds [Sun, 2 Sep 2018 17:44:28 +0000 (10:44 -0700)]
Merge tag 'armsoc-fixes' of git://git./linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "First batch of fixes post-merge window:

   - A handful of devicetree changes for i.MX2{3,8} to change over to
     new panel bindings. The platforms were moved from legacy
     framebuffers to DRM and some development board panels hadn't yet
     been converted.

   - OMAP fixes related to ti-sysc driver conversion fallout, fixing
     some register offsets, no_console_suspend fixes, etc.

   - Droid4 changes to fix flaky eMMC probing and vibrator DTS mismerge.

   - Fixed 0755->0644 permissions on a newly added file.

   - Defconfig changes to make ARM Versatile more useful with QEMU
     (helps testing).

   - Enable defconfig options for new TI SoC platform that was merged
     this window (AM6)"

* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  arm64: defconfig: Enable TI's AM6 SoC platform
  ARM: defconfig: Update the ARM Versatile defconfig
  ARM: dts: omap4-droid4: Fix emmc errors seen on some devices
  ARM: dts: Fix file permission for am335x-osd3358-sm-red.dts
  ARM: imx_v6_v7_defconfig: Select CONFIG_DRM_PANEL_SEIKO_43WVF1G
  ARM: mxs_defconfig: Select CONFIG_DRM_PANEL_SEIKO_43WVF1G
  ARM: dts: imx23-evk: Convert to the new display bindings
  ARM: dts: imx23-evk: Move regulators outside simple-bus
  ARM: dts: imx28-evk: Convert to the new display bindings
  ARM: dts: imx28-evk: Move regulators outside simple-bus
  Revert "ARM: dts: imx7d: Invert legacy PCI irq mapping"
  arm: dts: am4372: setup rtc as system-power-controller
  ARM: dts: omap4-droid4: fix vibrations on Droid 4
  bus: ti-sysc: Fix no_console_suspend handling
  bus: ti-sysc: Fix module register ioremap for larger offsets
  ARM: OMAP2+: Fix module address for modules using mpu_rt_idx
  ARM: OMAP2+: Fix null hwmod for ti-sysc debug

2 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 2 Sep 2018 17:11:30 +0000 (10:11 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Thomas Gleixner:
 "Speculation:

   - Make the microcode check more robust

   - Make the L1TF memory limit depend on the internal cache physical
     address space and not on the CPUID advertised physical address
     space, which might be significantly smaller. This avoids disabling
     L1TF on machines which utilize the full physical address space.

   - Fix the GDT mapping for EFI calls on 32bit PTI

   - Fix the MCE nospec implementation to prevent #GP

  Fixes and robustness:

   - Use the proper operand order for LSL in the VDSO

   - Prevent NMI uaccess race against CR3 switching

   - Add a lockdep check to verify that text_mutex is held in
     text_poke() functions

   - Repair the fallout of giving native_restore_fl() a prototype

   - Prevent kernel memory dumps based on usermode RIP

   - Wipe KASAN shadow stack before rewinding the stack to prevent false
     positives

   - Move the AMS GOTO enforcement to the actual build stage to allow
     user API header extraction without a compiler

   - Fix a section mismatch introduced by the on demand VDSO mapping
     change

  Miscellaneous:

   - Trivial typo, GCC quirk removal and CC_SET/OUT() cleanups"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/pti: Fix section mismatch warning/error
  x86/vdso: Fix lsl operand order
  x86/mce: Fix set_mce_nospec() to avoid #GP fault
  x86/efi: Load fixmap GDT in efi_call_phys_epilog()
  x86/nmi: Fix NMI uaccess race against CR3 switching
  x86: Allow generating user-space headers without a compiler
  x86/dumpstack: Don't dump kernel memory based on usermode RIP
  x86/asm: Use CC_SET()/CC_OUT() in __gen_sigismember()
  x86/alternatives: Lockdep-enforce text_mutex in text_poke*()
  x86/entry/64: Wipe KASAN stack shadow before rewind_stack_do_exit()
  x86/irqflags: Mark native_restore_fl extern inline
  x86/build: Remove jump label quirk for GCC older than 4.5.2
  x86/Kconfig: Fix trivial typo
  x86/speculation/l1tf: Increase l1tf memory limit for Nehalem+
  x86/spectre: Add missing family 6 check to microcode check

2 years agoMerge branch 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 2 Sep 2018 17:09:35 +0000 (10:09 -0700)]
Merge branch 'smp-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull CPU hotplug fix from Thomas Gleixner:
 "Remove the stale skip_onerr member from the hotplug states"

* 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  cpu/hotplug: Remove skip_onerr field from cpuhp_step structure

2 years agoMerge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 2 Sep 2018 16:41:45 +0000 (09:41 -0700)]
Merge branch 'core-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull core fixes from Thomas Gleixner:
 "A small set of updates for core code:

   - Prevent tracing in functions which are called from trace patching
     via stop_machine() to prevent executing half patched function trace
     entries.

   - Remove old GCC workarounds

   - Remove pointless includes of notifier.h"

* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  objtool: Remove workaround for unreachable warnings from old GCC
  notifier: Remove notifier header file wherever not used
  watchdog: Mark watchdog touch functions as notrace

2 years agox86/pti: Fix section mismatch warning/error
Randy Dunlap [Sun, 2 Sep 2018 04:01:28 +0000 (21:01 -0700)]
x86/pti: Fix section mismatch warning/error

Fix the section mismatch warning in arch/x86/mm/pti.c:

WARNING: vmlinux.o(.text+0x6972a): Section mismatch in reference from the function pti_clone_pgtable() to the function .init.text:pti_user_pagetable_walk_pte()
The function pti_clone_pgtable() references
the function __init pti_user_pagetable_walk_pte().
This is often because pti_clone_pgtable lacks a __init
annotation or the annotation of pti_user_pagetable_walk_pte is wrong.
FATAL: modpost: Section mismatches detected.

Fixes: 85900ea51577 ("x86/pti: Map the vsyscall page if needed")
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Andy Lutomirski <luto@kernel.org>
Link: https://lkml.kernel.org/r/43a6d6a3-d69d-5eda-da09-0b1c88215a2a@infradead.org
2 years agoMerge tag 'omap-for-v4.19/fixes-v2-signed' of git://git.kernel.org/pub/scm/linux...
Olof Johansson [Sun, 2 Sep 2018 01:22:19 +0000 (18:22 -0700)]
Merge tag 'omap-for-v4.19/fixes-v2-signed' of git://git./linux/kernel/git/tmlind/linux-omap into fixes

Fixes for omap variants against v4.19-rc1

These are mostly fixes related to using ti-sysc interconnect target module
driver for accessing right register offsets for sgx and cpsw and for
no_console_suspend regression.

There is also a droid4 emmc fix where emmc may not get detected for some
models, and vibrator dts mismerge fix.

And we have a file permission fix for am335x-osd3358-sm-red.dts that
just got added. And we must tag RTC as system-power-controller for
am437x for PMIC to shut down during poweroff.

* tag 'omap-for-v4.19/fixes-v2-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: dts: omap4-droid4: Fix emmc errors seen on some devices
  ARM: dts: Fix file permission for am335x-osd3358-sm-red.dts
  arm: dts: am4372: setup rtc as system-power-controller
  ARM: dts: omap4-droid4: fix vibrations on Droid 4
  bus: ti-sysc: Fix no_console_suspend handling
  bus: ti-sysc: Fix module register ioremap for larger offsets
  ARM: OMAP2+: Fix module address for modules using mpu_rt_idx
  ARM: OMAP2+: Fix null hwmod for ti-sysc debug

Signed-off-by: Olof Johansson <olof@lixom.net>
2 years agox86/vdso: Fix lsl operand order
Samuel Neves [Sat, 1 Sep 2018 20:14:52 +0000 (21:14 +0100)]
x86/vdso: Fix lsl operand order

In the __getcpu function, lsl is using the wrong target and destination
registers. Luckily, the compiler tends to choose %eax for both variables,
so it has been working so far.

Fixes: a582c540ac1b ("x86/vdso: Use RDPID in preference to LSL when available")
Signed-off-by: Samuel Neves <sneves@dei.uc.pt>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Andy Lutomirski <luto@kernel.org>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20180901201452.27828-1-sneves@dei.uc.pt
2 years agoMerge tag 'linux-watchdog-4.19-rc2' of git://www.linux-watchdog.org/linux-watchdog
Linus Torvalds [Sat, 1 Sep 2018 20:17:15 +0000 (13:17 -0700)]
Merge tag 'linux-watchdog-4.19-rc2' of git://linux-watchdog.org/linux-watchdog

Pull watchdog fixlet from Wim Van Sebroeck:
 "Document support for r8a774a1"

* tag 'linux-watchdog-4.19-rc2' of git://www.linux-watchdog.org/linux-watchdog:
  dt-bindings: watchdog: renesas-wdt: Document r8a774a1 support

2 years agoMerge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sat, 1 Sep 2018 20:03:32 +0000 (13:03 -0700)]
Merge tag 'clk-fixes-for-linus' of git://git./linux/kernel/git/clk/linux

Pull clk fixes from Stephen Boyd:
 "Two small fixes, one for the x86 Stoney SoC to get a more accurate clk
  frequency and the other to fix a bad allocation in the Nuvoton NPCM7XX
  driver"

* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
  clk: x86: Set default parent to 48Mhz
  clk: npcm7xx: fix memory allocation

2 years agox86/mce: Fix set_mce_nospec() to avoid #GP fault
LuckTony [Fri, 31 Aug 2018 16:55:06 +0000 (09:55 -0700)]
x86/mce: Fix set_mce_nospec() to avoid #GP fault

The trick with flipping bit 63 to avoid loading the address of the 1:1
mapping of the poisoned page while the 1:1 map is updated used to work when
unmapping the page. But it falls down horribly when attempting to directly
set the page as uncacheable.

The problem is that when the cache mode is changed to uncachable, the pages
needs to be flushed from the cache first. But the decoy address is
non-canonical due to bit 63 flipped, and the CLFLUSH instruction throws a
#GP fault.

Add code to change_page_attr_set_clr() to fix the address before calling
flush.

Fixes: 284ce4011ba6 ("x86/memory_failure: Introduce {set, clear}_mce_nospec()")
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Anvin <hpa@zytor.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: linux-edac <linux-edac@vger.kernel.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Dave Jiang <dave.jiang@intel.com>
Link: https://lkml.kernel.org/r/20180831165506.GA9605@agluck-desk
2 years agoMerge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Linus Torvalds [Fri, 31 Aug 2018 16:20:30 +0000 (09:20 -0700)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux

Pull arm64 fixes from Will Deacon:
 "A few arm64 fixes came in this week, specifically fixing some nasty
  truncation of return values from firmware calls and resolving a
  VM_BUG_ON due to accessing uninitialised struct pages corresponding to
  NOMAP pages.

  Summary:

   - Fix typos in SVE documentation

   - Fix type-checking and implicit truncation for SMCCC calls

   - Force CONFIG_HOLES_IN_ZONE=y so that SLAB doesn't fall over NOMAP
     regions"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: mm: always enable CONFIG_HOLES_IN_ZONE
  arm/arm64: smccc-1.1: Handle function result as parameters
  arm/arm64: smccc-1.1: Make return values unsigned long
  Documentation/arm64/sve: Couple of improvements and typos

2 years agox86/efi: Load fixmap GDT in efi_call_phys_epilog()
Joerg Roedel [Fri, 31 Aug 2018 08:05:38 +0000 (10:05 +0200)]
x86/efi: Load fixmap GDT in efi_call_phys_epilog()

When PTI is enabled on x86-32 the kernel uses the GDT mapped in the fixmap
for the simple reason that this address is also mapped for user-space.

The efi_call_phys_prolog()/efi_call_phys_epilog() wrappers change the GDT
to call EFI runtime services and switch back to the kernel GDT when they
return. But the switch-back uses the writable GDT, not the fixmap GDT.

When that happened and and the CPU returns to user-space it switches to the
user %cr3 and tries to restore user segment registers. This fails because
the writable GDT is not mapped in the user page-table, and without a GDT
the fault handlers also can't be launched. The result is a triple fault and
reboot of the machine.

Fix that by restoring the GDT back to the fixmap GDT which is also mapped
in the user page-table.

Fixes: 7757d607c6b3 x86/pti: ('Allow CONFIG_PAGE_TABLE_ISOLATION for x86_32')
Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: hpa@zytor.com
Cc: linux-efi@vger.kernel.org
Link: https://lkml.kernel.org/r/1535702738-10971-1-git-send-email-joro@8bytes.org
2 years agoMerge tag 'for-linus-4.19b-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 31 Aug 2018 15:45:16 +0000 (08:45 -0700)]
Merge tag 'for-linus-4.19b-rc2-tag' of git://git./linux/kernel/git/xen/tip

Pull xen fixes from Juergen Gross:

 - minor cleanup avoiding a warning when building with new gcc

 - a patch to add a new sysfs node for Xen frontend/backend drivers to
   make it easier to obtain the state of a pv device

 - two fixes for 32-bit pv-guests to avoid intermediate L1TF vulnerable
   PTEs

* tag 'for-linus-4.19b-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  x86/xen: remove redundant variable save_pud
  xen: export device state to sysfs
  x86/pae: use 64 bit atomic xchg function in native_ptep_get_and_clear
  x86/xen: don't write ptes directly in 32-bit PV guests

2 years agoMerge tag 'm68k-for-v4.19-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 31 Aug 2018 15:42:46 +0000 (08:42 -0700)]
Merge tag 'm68k-for-v4.19-tag2' of git://git./linux/kernel/git/geert/linux-m68k

Pull m68k fix from Geert Uytterhoeven:
 "Just a single fix for a bug introduced during the merge window: fix
  wrong date and time on PMU-based Macs"

* tag 'm68k-for-v4.19-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k/mac: Use correct PMU response format

2 years agoMerge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa...
Linus Torvalds [Fri, 31 Aug 2018 15:38:53 +0000 (08:38 -0700)]
Merge branch 'i2c/for-current' of git://git./linux/kernel/git/wsa/linux

Pull i2c fixes from Wolfram Sang:

 - regression fixes for i801 and designware

 - better API and leak fix for releasing DMA safe buffers

 - better greppable strings for the bitbang algorithm

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: sh_mobile: fix leak when using DMA bounce buffer
  i2c: sh_mobile: define start_ch() void as it only returns 0 anyhow
  i2c: refactor function to release a DMA safe buffer
  i2c: algos: bit: make the error messages grepable
  i2c: designware: Re-init controllers with pm_disabled set on resume
  i2c: i801: Allow ACPI AML access I/O ports not reserved for SMBus

2 years agox86/nmi: Fix NMI uaccess race against CR3 switching
Andy Lutomirski [Wed, 29 Aug 2018 15:47:18 +0000 (08:47 -0700)]
x86/nmi: Fix NMI uaccess race against CR3 switching

A NMI can hit in the middle of context switching or in the middle of
switch_mm_irqs_off().  In either case, CR3 might not match current->mm,
which could cause copy_from_user_nmi() and friends to read the wrong
memory.

Fix it by adding a new nmi_uaccess_okay() helper and checking it in
copy_from_user_nmi() and in __copy_from_user_nmi()'s callers.

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Rik van Riel <riel@surriel.com>
Cc: Nadav Amit <nadav.amit@gmail.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Jann Horn <jannh@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/dd956eba16646fd0b15c3c0741269dfd84452dac.1535557289.git.luto@kernel.org
2 years agox86: Allow generating user-space headers without a compiler
Ben Hutchings [Wed, 29 Aug 2018 19:43:17 +0000 (20:43 +0100)]
x86: Allow generating user-space headers without a compiler

When bootstrapping an architecture, it's usual to generate the kernel's
user-space headers (make headers_install) before building a compiler.  Move
the compiler check (for asm goto support) to the archprepare target so that
it is only done when building code for the target.

Fixes: e501ce957a78 ("x86: Force asm-goto")
Reported-by: Helmut Grohne <helmutg@debian.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20180829194317.GA4765@decadent.org.uk
2 years agox86/dumpstack: Don't dump kernel memory based on usermode RIP
Jann Horn [Tue, 28 Aug 2018 15:49:01 +0000 (17:49 +0200)]
x86/dumpstack: Don't dump kernel memory based on usermode RIP

show_opcodes() is used both for dumping kernel instructions and for dumping
user instructions. If userspace causes #PF by jumping to a kernel address,
show_opcodes() can be reached with regs->ip controlled by the user,
pointing to kernel code. Make sure that userspace can't trick us into
dumping kernel memory into dmesg.

Fixes: 7cccf0725cf7 ("x86/dumpstack: Add a show_ip() function")
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Borislav Petkov <bp@suse.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: security@kernel.org
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20180828154901.112726-1-jannh@google.com
2 years agoof: Add device_type access helper functions
Rob Herring [Tue, 28 Aug 2018 20:10:48 +0000 (15:10 -0500)]
of: Add device_type access helper functions

In preparation to remove direct access to device_node.type, add
of_node_is_type() and of_node_get_device_type() helpers to check and
retrieve the device type.

Cc: Frank Rowand <frowand.list@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
2 years agocpu/hotplug: Remove skip_onerr field from cpuhp_step structure
Mukesh Ojha [Tue, 28 Aug 2018 06:54:54 +0000 (12:24 +0530)]
cpu/hotplug: Remove skip_onerr field from cpuhp_step structure

When notifiers were there, `skip_onerr` was used to avoid calling
particular step startup/teardown callbacks in the CPU up/down rollback
path, which made the hotplug asymmetric.

As notifiers are gone now after the full state machine conversion, the
`skip_onerr` field is no longer required.

Remove it from the structure and its usage.

Signed-off-by: Mukesh Ojha <mojha@codeaurora.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/1535439294-31426-1-git-send-email-mojha@codeaurora.org
2 years agoarm64: mm: always enable CONFIG_HOLES_IN_ZONE
James Morse [Thu, 30 Aug 2018 15:05:32 +0000 (16:05 +0100)]
arm64: mm: always enable CONFIG_HOLES_IN_ZONE

Commit 6d526ee26ccd ("arm64: mm: enable CONFIG_HOLES_IN_ZONE for NUMA")
only enabled HOLES_IN_ZONE for NUMA systems because the NUMA code was
choking on the missing zone for nomap pages. This problem doesn't just
apply to NUMA systems.

If the architecture doesn't set HAVE_ARCH_PFN_VALID, pfn_valid() will
return true if the pfn is part of a valid sparsemem section.

When working with multiple pages, the mm code uses pfn_valid_within()
to test each page it uses within the sparsemem section is valid. On
most systems memory comes in MAX_ORDER_NR_PAGES chunks which all
have valid/initialised struct pages. In this case pfn_valid_within()
is optimised out.

Systems where this isn't true (e.g. due to nomap) should set
HOLES_IN_ZONE and provide HAVE_ARCH_PFN_VALID so that mm tests each
page as it works with it.

Currently non-NUMA arm64 systems can't enable HOLES_IN_ZONE, leading to
a VM_BUG_ON():

| page:fffffdff802e1780 is uninitialized and poisoned
| raw: ffffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffff
| raw: ffffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffff
| page dumped because: VM_BUG_ON_PAGE(PagePoisoned(p))
| ------------[ cut here ]------------
| kernel BUG at include/linux/mm.h:978!
| Internal error: Oops - BUG: 0 [#1] PREEMPT SMP
[...]
| CPU: 1 PID: 25236 Comm: dd Not tainted 4.18.0 #7
| Hardware name: QEMU KVM Virtual Machine, BIOS 0.0.0 02/06/2015
| pstate: 40000085 (nZcv daIf -PAN -UAO)
| pc : move_freepages_block+0x144/0x248
| lr : move_freepages_block+0x144/0x248
| sp : fffffe0071177680
[...]
| Process dd (pid: 25236, stack limit = 0x0000000094cc07fb)
| Call trace:
|  move_freepages_block+0x144/0x248
|  steal_suitable_fallback+0x100/0x16c
|  get_page_from_freelist+0x440/0xb20
|  __alloc_pages_nodemask+0xe8/0x838
|  new_slab+0xd4/0x418
|  ___slab_alloc.constprop.27+0x380/0x4a8
|  __slab_alloc.isra.21.constprop.26+0x24/0x34
|  kmem_cache_alloc+0xa8/0x180
|  alloc_buffer_head+0x1c/0x90
|  alloc_page_buffers+0x68/0xb0
|  create_empty_buffers+0x20/0x1ec
|  create_page_buffers+0xb0/0xf0
|  __block_write_begin_int+0xc4/0x564
|  __block_write_begin+0x10/0x18
|  block_write_begin+0x48/0xd0
|  blkdev_write_begin+0x28/0x30
|  generic_perform_write+0x98/0x16c
|  __generic_file_write_iter+0x138/0x168
|  blkdev_write_iter+0x80/0xf0
|  __vfs_write+0xe4/0x10c
|  vfs_write+0xb4/0x168
|  ksys_write+0x44/0x88
|  sys_write+0xc/0x14
|  el0_svc_naked+0x30/0x34
| Code: aa1303e0 90001a01 91296421 94008902 (d4210000)
| ---[ end trace 1601ba47f6e883fe ]---

Remove the NUMA dependency.

Link: https://www.spinics.net/lists/arm-kernel/msg671851.html
Cc: <stable@vger.kernel.org>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reported-by: Mikulas Patocka <mpatocka@redhat.com>
Reviewed-by: Pavel Tatashin <pavel.tatashin@microsoft.com>
Tested-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: James Morse <james.morse@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2 years agom68k/mac: Use correct PMU response format
Finn Thain [Fri, 24 Aug 2018 02:02:06 +0000 (12:02 +1000)]
m68k/mac: Use correct PMU response format

Now that the 68k Mac port has adopted the via-pmu driver, it must decode
the PMU response accordingly otherwise the date and time will be wrong.

Fixes: ebd722275f9cfc67 ("macintosh/via-pmu: Replace via-pmu68k driver with via-pmu driver")
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2 years agoMerge tag 'drm-fixes-2018-08-31' of git://anongit.freedesktop.org/drm/drm
Linus Torvalds [Fri, 31 Aug 2018 04:18:05 +0000 (21:18 -0700)]
Merge tag 'drm-fixes-2018-08-31' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "Regular fixes pull:

   - Mediatek has a bunch of fixes to their RDMA and Overlay engines.

   - i915 has some Cannonlake/Geminilake watermark workarounds, LSPCON
     fix, HDCP free fix, audio fix and a ppgtt reference counting fix.

   - amdgpu has some SRIOV, Kasan, memory leaks and other misc fixes"

* tag 'drm-fixes-2018-08-31' of git://anongit.freedesktop.org/drm/drm: (35 commits)
  drm/i915/audio: Hook up component bindings even if displays are disabled
  drm/i915: Increase LSPCON timeout
  drm/i915: Stop holding a ref to the ppgtt from each vma
  drm/i915: Free write_buf that we allocated with kzalloc.
  drm/i915: Fix glk/cnl display w/a #1175
  drm/amdgpu: Need to set moved to true when evict bo
  drm/amdgpu: Remove duplicated power source update
  drm/amd/display: Fix memory leak caused by missed dc_sink_release
  drm/amdgpu: fix holding mn_lock while allocating memory
  drm/amdgpu: Power on uvd block when hw_fini
  drm/amdgpu: Update power state at the end of smu hw_init.
  drm/amdgpu: Fix vce initialize failed on Kaveri/Mullins
  drm/amdgpu: Enable/disable gfx PG feature in rlc safe mode
  drm/amdgpu: Adjust the VM size based on system memory size v2
  drm/mediatek: fix connection from RDMA2 to DSI1
  drm/mediatek: update some variable name from ovl to comp
  drm/mediatek: use layer_nr function to get layer number to init plane
  drm/mediatek: add function to return RDMA layer number
  drm/mediatek: add function to return OVL layer number
  drm/mediatek: add function to get layer number for component
  ...

2 years agodisable stringop truncation warnings for now
Stephen Rothwell [Thu, 30 Aug 2018 21:47:28 +0000 (07:47 +1000)]
disable stringop truncation warnings for now

They are too noisy

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2 years agoMerge tag 'pm-4.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Linus Torvalds [Fri, 31 Aug 2018 01:02:02 +0000 (18:02 -0700)]
Merge tag 'pm-4.19-rc2' of git://git./linux/kernel/git/rafael/linux-pm

Pull power management fixes from Rafael Wysocki:
 "These address a corner case in the menu cpuidle governor and fix error
  handling in the PM core's generic clock management code.

  Specifics:

   - Make the menu cpuidle governor avoid stopping the scheduler tick if
     the predicted idle duration exceeds the tick period length, but the
     selected idle state is shallow and deeper idle states with high
     target residencies are available (Rafael Wysocki).

   - Make the PM core's generic clock management code use a proper data
     type for one variable to make error handling work (Dan Carpenter)"

* tag 'pm-4.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpuidle: menu: Retain tick when shallow state is selected
  PM / clk: signedness bug in of_pm_clk_add_clks()

2 years agoMerge branch 'pm-core'
Rafael J. Wysocki [Thu, 30 Aug 2018 23:23:31 +0000 (01:23 +0200)]
Merge branch 'pm-core'

Merge a generic clock management fix for 4.19-rc2.

* pm-core:
  PM / clk: signedness bug in of_pm_clk_add_clks()

2 years agoclk: x86: Set default parent to 48Mhz
Akshu Agrawal [Tue, 21 Aug 2018 06:51:57 +0000 (12:21 +0530)]
clk: x86: Set default parent to 48Mhz

System clk provided in ST soc can be set to:
48Mhz, non-spread
25Mhz, spread
To get accurate rate, we need it to set it at non-spread
option which is 48Mhz.

Signed-off-by: Akshu Agrawal <akshu.agrawal@amd.com>
Reviewed-by: Daniel Kurtz <djkurtz@chromium.org>
Fixes: 421bf6a1f061 ("clk: x86: Add ST oscout platform clock")
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2 years agoi2c: sh_mobile: fix leak when using DMA bounce buffer
Wolfram Sang [Fri, 24 Aug 2018 14:52:46 +0000 (16:52 +0200)]
i2c: sh_mobile: fix leak when using DMA bounce buffer

We only freed the bounce buffer after successful DMA, missing the cases
where DMA setup may have gone wrong. Use a better location which always
gets called after each message and use 'stop_after_dma' as a flag for a
successful transfer.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2 years agoi2c: sh_mobile: define start_ch() void as it only returns 0 anyhow
Wolfram Sang [Fri, 24 Aug 2018 14:52:45 +0000 (16:52 +0200)]
i2c: sh_mobile: define start_ch() void as it only returns 0 anyhow

After various refactoring over the years, start_ch() doesn't return
errno anymore, so make the function return void. This saves the error
handling when calling it which in turn eases cleanup of resources of a
future patch.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2 years agoi2c: refactor function to release a DMA safe buffer
Wolfram Sang [Fri, 24 Aug 2018 14:52:44 +0000 (16:52 +0200)]
i2c: refactor function to release a DMA safe buffer

a) rename to 'put' instead of 'release' to match 'get' when obtaining
   the buffer
b) change the argument order to have the buffer as first argument
c) add a new argument telling the function if the message was
   transferred. This allows the function to be used also in cases
   where setting up DMA failed, so the buffer needs to be freed without
   syncing to the message buffer.

Also convert the only user.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2 years agoi2c: algos: bit: make the error messages grepable
Jan Kundrát [Tue, 28 Aug 2018 08:07:40 +0000 (10:07 +0200)]
i2c: algos: bit: make the error messages grepable

Yep, I went looking for one of these, and I wasn't able to find it
easily.  That's worse than a line which is 82-chars long, IMHO.

Signed-off-by: Jan Kundrát <jan.kundrat@cesnet.cz>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2 years agoi2c: designware: Re-init controllers with pm_disabled set on resume
Hans de Goede [Wed, 29 Aug 2018 13:06:31 +0000 (15:06 +0200)]
i2c: designware: Re-init controllers with pm_disabled set on resume

On Bay Trail and Cherry Trail devices we set the pm_disabled flag for I2C
busses which the OS shares with the PUNIT as these need special handling.
Until now we called dev_pm_syscore_device(dev, true) for I2C controllers
with this flag set to keep these I2C controllers always on.

After commit 12864ff8545f ("ACPI / LPSS: Avoid PM quirks on suspend and
resume from hibernation"), this no longer works. This commit modifies
lpss_iosf_exit_d3_state() to only run if lpss_iosf_enter_d3_state() has ran
before it, so that it does not run on a resume from hibernate (or from S3).

On these systems the conditions for lpss_iosf_enter_d3_state() to run
never become true, so lpss_iosf_exit_d3_state() never gets called and
the 2 LPSS DMA controllers never get forced into D0 mode, instead they
are left in their default automatic power-on when needed mode.

The not forcing of D0 mode for the DMA controllers enables these systems
to properly enter S0ix modes, which is a good thing.

But after entering S0ix modes the I2C controller connected to the PMIC
no longer works, leading to e.g. broken battery monitoring.

The _PS3 method for this I2C controller looks like this:

            Method (_PS3, 0, NotSerialized)  // _PS3: Power State 3
            {
                If ((((PMID == 0x04) || (PMID == 0x05)) || (PMID == 0x06)))
                {
                    Return (Zero)
                }

                PSAT |= 0x03
                Local0 = PSAT /* \_SB_.I2C5.PSAT */
            }

Where PMID = 0x05, so we enter the Return (Zero) path on these systems.

So even if we were to not call dev_pm_syscore_device(dev, true) the
I2C controller will be left in D0 rather then be switched to D3.

Yet on other Bay and Cherry Trail devices S0ix is not entered unless *all*
I2C controllers are in D3 mode. This combined with the I2C controller no
longer working now that we reach S0ix states on these systems leads to me
believing that the PUNIT itself puts the I2C controller in D3 when all
other conditions for entering S0ix states are true.

Since now the I2C controller is put in D3 over a suspend/resume we must
re-initialize it afterwards and that does indeed fix it no longer working.

This commit implements this fix by:

1) Making the suspend_late callback a no-op if pm_disabled is set and
making the resume_early callback skip the clock re-enable (since it now was
not disabled) while still doing the necessary I2C controller re-init.

2) Removing the dev_pm_syscore_device(dev, true) call, so that the suspend
and resume callbacks are actually called. Normally this would cause the
ACPI pm code to call _PS3 putting the I2C controller in D3, wreaking havoc
since it is shared with the PUNIT, but in this special case the _PS3 method
is a no-op so we can safely allow a "fake" suspend / resume.

Fixes: 12864ff8545f ("ACPI / LPSS: Avoid PM quirks on suspend and resume ...")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=200861
Cc: 4.15+ <stable@vger.kernel.org> # 4.15+
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2 years agoi2c: i801: Allow ACPI AML access I/O ports not reserved for SMBus
Mika Westerberg [Thu, 30 Aug 2018 08:50:13 +0000 (11:50 +0300)]
i2c: i801: Allow ACPI AML access I/O ports not reserved for SMBus

Commit 7ae81952cda ("i2c: i801: Allow ACPI SystemIO OpRegion to conflict
with PCI BAR") made it possible for AML code to access SMBus I/O ports
by installing custom SystemIO OpRegion handler and blocking i80i driver
access upon first AML read/write to this OpRegion.

However, while ThinkPad T560 does have SystemIO OpRegion declared under
the SMBus device, it does not access any of the SMBus registers:

    Device (SMBU)
    {
        ...

        OperationRegion (SMBP, PCI_Config, 0x50, 0x04)
        Field (SMBP, DWordAcc, NoLock, Preserve)
        {
            ,   5,
            TCOB,   11,
            Offset (0x04)
        }

        Name (TCBV, 0x00)
        Method (TCBS, 0, NotSerialized)
        {
            If ((TCBV == 0x00))
            {
            TCBV = (\_SB.PCI0.SMBU.TCOB << 0x05)
            }

            Return (TCBV) /* \_SB_.PCI0.SMBU.TCBV */
        }

        OperationRegion (TCBA, SystemIO, TCBS (), 0x10)
        Field (TCBA, ByteAcc, NoLock, Preserve)
        {
            Offset (0x04),
            ,   9,
            CPSC,   1
        }
    }

Problem with the current approach is that it blocks all I/O port access
and because this system has touchpad connected to the SMBus controller
after first AML access (happens during suspend/resume cycle) the
touchpad fails to work anymore.

Fix this so that we allow ACPI AML I/O port access if it does not touch
the region reserved for the SMBus.

Fixes: 7ae81952cda ("i2c: i801: Allow ACPI SystemIO OpRegion to conflict with PCI BAR")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=200737
Reported-by: Yussuf Khalil <dev@pp3345.net>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2 years agoMerge tag 'for-linus-20180830' of git://git.kernel.dk/linux-block
Linus Torvalds [Thu, 30 Aug 2018 20:39:04 +0000 (13:39 -0700)]
Merge tag 'for-linus-20180830' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:
 "Small collection of fixes that should go into this series. This pull
  contains:

   - NVMe pull request with three small fixes (via Christoph)

   - Kill useless NULL check before kmem_cache_destroy (Chengguang Xu)

   - Xen block driver pull request with persistent grant flushing fixes
     (Juergen Gross)

   - Final wbt fixes, wrapping up the changes for this series. These
     have been heavily tested (me)

   - cdrom info leak fix (Scott Bauer)

   - ATA dma quirk for SQ201 (Linus Walleij)

   - Straight forward bsg refcount_t conversion (John Pittman)"

* tag 'for-linus-20180830' of git://git.kernel.dk/linux-block:
  cdrom: Fix info leak/OOB read in cdrom_ioctl_drive_status
  nvmet: free workqueue object if module init fails
  nvme-fcloop: Fix dropped LS's to removed target port
  nvme-pci: add a memory barrier to nvme_dbbuf_update_and_check_event
  block: bsg: move atomic_t ref_count variable to refcount API
  block: remove unnecessary condition check
  ata: ftide010: Add a quirk for SQ201
  blk-wbt: remove dead code
  blk-wbt: improve waking of tasks
  blk-wbt: abstract out end IO completion handler
  xen/blkback: remove unused pers_gnts_lock from struct xen_blkif_ring
  xen/blkback: move persistent grants flags to bool
  xen/blkfront: reorder tests in xlblk_init()
  xen/blkfront: cleanup stale persistent grants
  xen/blkback: don't keep persistent grants too long

2 years agoof: add node name compare helper functions
Rob Herring [Mon, 27 Aug 2018 12:50:47 +0000 (07:50 -0500)]
of: add node name compare helper functions

In preparation to remove device_node.name pointer, add helper functions
for node name comparisons which are a common pattern throughout the kernel.

Cc: Frank Rowand <frowand.list@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
2 years agoMerge tag 'mtd/for-4.19-rc2' of git://git.infradead.org/linux-mtd
Linus Torvalds [Thu, 30 Aug 2018 17:05:12 +0000 (10:05 -0700)]
Merge tag 'mtd/for-4.19-rc2' of git://git.infradead.org/linux-mtd

Pull mtd fixes from Boris Brezillon:
 "Raw NAND fixes:

   - denali: Fix a regression caused by the nand_scan() rework

   - docg4: Fix a build error when gcc decides to not iniline some
     functions (can be reproduced with gcc 4.1.2):

* tag 'mtd/for-4.19-rc2' of git://git.infradead.org/linux-mtd:
  mtd: rawnand: denali: do not pass zero maxchips to nand_scan()
  mtd: rawnand: docg4: Remove wrong __init annotations

2 years agoMerge tag 'mmc-v4.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Linus Torvalds [Thu, 30 Aug 2018 16:50:15 +0000 (09:50 -0700)]
Merge tag 'mmc-v4.19-2' of git://git./linux/kernel/git/ulfh/mmc

Pull MMC fixes from Ulf Hansson:
 "MMC core:
   - Fix unsupported parallel dispatch of requests

  MMC host:
   - atmel-mci/android-goldfish: Fixup logic of sg_copy_{from,to}_buffer
   - renesas_sdhi_internal_dmac: Prevent IRQ-storm due of DMAC IRQs
   - renesas_sdhi_internal_dmac: Fixup bad register offset"

* tag 'mmc-v4.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  mmc: renesas_sdhi_internal_dmac: mask DMAC interrupts
  mmc: renesas_sdhi_internal_dmac: fix #define RST_RESERVED_BITS
  mmc: block: Fix unsupported parallel dispatch of requests
  mmc: android-goldfish: fix bad logic of sg_copy_{from,to}_buffer conversion
  mmc: atmel-mci: fix bad logic of sg_copy_{from,to}_buffer conversion

2 years agoARM: shmobile: Convert to using %pOFn instead of device_node.name
Rob Herring [Tue, 28 Aug 2018 01:52:03 +0000 (20:52 -0500)]
ARM: shmobile: Convert to using %pOFn instead of device_node.name

In preparation to remove the node name pointer from struct device_node,
convert printf users to use the %pOFn format specifier.

Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2 years agoARM: shmobile: Remove the ARCH_SHMOBILE Kconfig symbol
Geert Uytterhoeven [Tue, 28 Aug 2018 15:10:10 +0000 (17:10 +0200)]
ARM: shmobile: Remove the ARCH_SHMOBILE Kconfig symbol

All drivers for Renesas ARM SoCs have gained proper ARCH_RENESAS
platform dependencies.  Hence finish the conversion from ARCH_SHMOBILE
to ARCH_RENESAS for Renesas 32-bit ARM SoCs, as started by commit
9b5ba0df4ea4f940 ("ARM: shmobile: Introduce ARCH_RENESAS").

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2 years agoarm/arm64: smccc-1.1: Handle function result as parameters
Marc Zyngier [Fri, 24 Aug 2018 14:08:30 +0000 (15:08 +0100)]
arm/arm64: smccc-1.1: Handle function result as parameters

If someone has the silly idea to write something along those lines:

extern u64 foo(void);

void bar(struct arm_smccc_res *res)
{
arm_smccc_1_1_smc(0xbad, foo(), res);
}

they are in for a surprise, as this gets compiled as:

0000000000000588 <bar>:
 588:   a9be7bfd        stp     x29, x30, [sp, #-32]!
 58c:   910003fd        mov     x29, sp
 590:   f9000bf3        str     x19, [sp, #16]
 594:   aa0003f3        mov     x19, x0
 598:   aa1e03e0        mov     x0, x30
 59c:   94000000        bl      0 <_mcount>
 5a0:   94000000        bl      0 <foo>
 5a4:   aa0003e1        mov     x1, x0
 5a8:   d4000003        smc     #0x0
 5ac:   b4000073        cbz     x19, 5b8 <bar+0x30>
 5b0:   a9000660        stp     x0, x1, [x19]
 5b4:   a9010e62        stp     x2, x3, [x19, #16]
 5b8:   f9400bf3        ldr     x19, [sp, #16]
 5bc:   a8c27bfd        ldp     x29, x30, [sp], #32
 5c0:   d65f03c0        ret
 5c4:   d503201f        nop

The call to foo "overwrites" the x0 register for the return value,
and we end up calling the wrong secure service.

A solution is to evaluate all the parameters before assigning
anything to specific registers, leading to the expected result:

0000000000000588 <bar>:
 588:   a9be7bfd        stp     x29, x30, [sp, #-32]!
 58c:   910003fd        mov     x29, sp
 590:   f9000bf3        str     x19, [sp, #16]
 594:   aa0003f3        mov     x19, x0
 598:   aa1e03e0        mov     x0, x30
 59c:   94000000        bl      0 <_mcount>
 5a0:   94000000        bl      0 <foo>
 5a4:   aa0003e1        mov     x1, x0
 5a8:   d28175a0        mov     x0, #0xbad
 5ac:   d4000003        smc     #0x0
 5b0:   b4000073        cbz     x19, 5bc <bar+0x34>
 5b4:   a9000660        stp     x0, x1, [x19]
 5b8:   a9010e62        stp     x2, x3, [x19, #16]
 5bc:   f9400bf3        ldr     x19, [sp, #16]
 5c0:   a8c27bfd        ldp     x29, x30, [sp], #32
 5c4:   d65f03c0        ret

Reported-by: Julien Grall <julien.grall@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2 years agox86/asm: Use CC_SET()/CC_OUT() in __gen_sigismember()
Uros Bizjak [Tue, 14 Aug 2018 16:59:51 +0000 (18:59 +0200)]
x86/asm: Use CC_SET()/CC_OUT() in __gen_sigismember()

Replace open-coded set instructions with CC_SET()/CC_OUT().

Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20180814165951.13538-1-ubizjak@gmail.com
2 years agox86/alternatives: Lockdep-enforce text_mutex in text_poke*()
Jiri Kosina [Tue, 28 Aug 2018 06:55:14 +0000 (08:55 +0200)]
x86/alternatives: Lockdep-enforce text_mutex in text_poke*()

text_poke() and text_poke_bp() must be called with text_mutex held.

Put proper lockdep anotation in place instead of just mentioning the
requirement in a comment.

Reported-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Andy Lutomirski <luto@kernel.org>
Link: https://lkml.kernel.org/r/nycvar.YFH.7.76.1808280853520.25787@cbobk.fhfr.pm
2 years agoobjtool: Remove workaround for unreachable warnings from old GCC
Masahiro Yamada [Mon, 27 Aug 2018 03:39:43 +0000 (12:39 +0900)]
objtool: Remove workaround for unreachable warnings from old GCC

Commit cafa0010cd51 ("Raise the minimum required gcc version to 4.6")
bumped the minimum GCC version to 4.6 for all architectures.

This effectively reverts commit da541b20021c ("objtool: Skip unreachable
warnings for GCC 4.4 and older"), which was a workaround for GCC 4.4 or
older.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Michal Marek <michal.lkml@markovi.net>
Cc: linux-kbuild@vger.kernel.org
Link: https://lkml.kernel.org/r/1535341183-19994-1-git-send-email-yamada.masahiro@socionext.com
2 years agonotifier: Remove notifier header file wherever not used
Mukesh Ojha [Fri, 24 Aug 2018 12:33:53 +0000 (18:03 +0530)]
notifier: Remove notifier header file wherever not used

The conversion of the hotplug notifiers to a state machine left the
notifier.h includes around in some places. Remove them.

Signed-off-by: Mukesh Ojha <mojha@codeaurora.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/1535114033-4605-1-git-send-email-mojha@codeaurora.org
2 years agowatchdog: Mark watchdog touch functions as notrace
Vincent Whitchurch [Tue, 21 Aug 2018 15:25:07 +0000 (17:25 +0200)]
watchdog: Mark watchdog touch functions as notrace

Some architectures need to use stop_machine() to patch functions for
ftrace, and the assumption is that the stopped CPUs do not make function
calls to traceable functions when they are in the stopped state.

Commit ce4f06dcbb5d ("stop_machine: Touch_nmi_watchdog() after
MULTI_STOP_PREPARE") added calls to the watchdog touch functions from
the stopped CPUs and those functions lack notrace annotations.  This
leads to crashes when enabling/disabling ftrace on ARM kernels built
with the Thumb-2 instruction set.

Fix it by adding the necessary notrace annotations.

Fixes: ce4f06dcbb5d ("stop_machine: Touch_nmi_watchdog() after MULTI_STOP_PREPARE")
Signed-off-by: Vincent Whitchurch <vincent.whitchurch@axis.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: oleg@redhat.com
Cc: tj@kernel.org
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20180821152507.18313-1-vincent.whitchurch@axis.com
2 years agox86/entry/64: Wipe KASAN stack shadow before rewind_stack_do_exit()
Jann Horn [Tue, 28 Aug 2018 18:40:33 +0000 (20:40 +0200)]
x86/entry/64: Wipe KASAN stack shadow before rewind_stack_do_exit()

Reset the KASAN shadow state of the task stack before rewinding RSP.
Without this, a kernel oops will leave parts of the stack poisoned, and
code running under do_exit() can trip over such poisoned regions and cause
nonsensical false-positive KASAN reports about stack-out-of-bounds bugs.

This does not wipe the exception stacks; if an oops happens on an exception
stack, it might result in random KASAN false-positives from other tasks
afterwards. This is probably relatively uninteresting, since if the kernel
oopses on an exception stack, there are most likely bigger things to worry
about. It'd be more interesting if vmapped stacks and KASAN were
compatible, since then handle_stack_overflow() would oops from exception
stack context.

Fixes: 2deb4be28077 ("x86/dumpstack: When OOPSing, rewind the stack before do_exit()")
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: kasan-dev@googlegroups.com
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20180828184033.93712-1-jannh@google.com
2 years agox86/irqflags: Mark native_restore_fl extern inline
Nick Desaulniers [Mon, 27 Aug 2018 21:40:09 +0000 (14:40 -0700)]
x86/irqflags: Mark native_restore_fl extern inline

This should have been marked extern inline in order to pick up the out
of line definition in arch/x86/kernel/irqflags.S.

Fixes: 208cbb325589 ("x86/irqflags: Provide a declaration for native_save_fl")
Reported-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Juergen Gross <jgross@suse.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20180827214011.55428-1-ndesaulniers@google.com
2 years agox86/build: Remove jump label quirk for GCC older than 4.5.2
Masahiro Yamada [Mon, 27 Aug 2018 05:45:14 +0000 (14:45 +0900)]
x86/build: Remove jump label quirk for GCC older than 4.5.2

Commit cafa0010cd51 ("Raise the minimum required gcc version to 4.6")
bumped the minimum GCC version to 4.6 for all architectures.

Remove the workaround code.

It was the only user of cc-if-fullversion.  Remove the macro as well.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Michal Marek <michal.lkml@markovi.net>
Cc: linux-kbuild@vger.kernel.org
Link: https://lkml.kernel.org/r/1535348714-25457-1-git-send-email-yamada.masahiro@socionext.com
2 years agoMerge tag 'riscv-for-linus-4.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Thu, 30 Aug 2018 01:41:48 +0000 (18:41 -0700)]
Merge tag 'riscv-for-linus-4.19-rc2' of git://git./linux/kernel/git/palmer/riscv-linux

Pull RISC-V fixes from Palmer Dabbelt:
 "RISC-V Fixes and Cleanups for 4.19-rc2

  This contains a handful of patches that filtered their way in during
  the merge window but just didn't make the deadline. It includes:

   - Additional documentation in the riscv,cpu-intc device tree binding
     that resulted from some feedback I missed in the original patch
     set.

   - A build fix that provides the definition of tlb_flush() before
     including tlb.h, which fixes a RISC-V build regression introduced
     during this merge window.

   - A cosmetic cleanup to sys_riscv_flush_icache()"

* tag 'riscv-for-linus-4.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux:
  RISC-V: Use a less ugly workaround for unused variable warnings
  riscv: tlb: Provide definition of tlb_flush() before including tlb.h
  dt-bindings: riscv,cpu-intc: Cleanups from a missed review

2 years agoMerge tag 'drm-intel-fixes-2018-08-29' of git://anongit.freedesktop.org/drm/drm-intel...
Dave Airlie [Thu, 30 Aug 2018 01:34:55 +0000 (11:34 +1000)]
Merge tag 'drm-intel-fixes-2018-08-29' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes

- fix for GLK and CNL watermark workaround
- fix for display affecting NUCs with LSPCON
- freeing an allocated write_buf on hdcp
- audio hook when display is disabled
- vma stop holding ppgtt reference

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180829234512.GA32468@intel.com
2 years agoMerge branch 'drm-fixes-4.19' of git://people.freedesktop.org/~agd5f/linux into drm...
Dave Airlie [Thu, 30 Aug 2018 01:30:02 +0000 (11:30 +1000)]
Merge branch 'drm-fixes-4.19' of git://people.freedesktop.org/~agd5f/linux into drm-fixes

Fixes for 4.19:
- SR-IOV fixes
- Kasan and page fault fix on device removal
- S3 stability fix for CZ/ST
- VCE regression fixes for CIK parts
- Avoid holding the mn_lock when allocating memory
- DC memory leak fix
- BO eviction fix

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexdeucher@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180829202555.2653-1-alexander.deucher@amd.com
2 years agoMerge branch 'mediatek-drm-fixes-4.19' of https://github.com/ckhu-mediatek/linux...
Dave Airlie [Thu, 30 Aug 2018 00:25:47 +0000 (10:25 +1000)]
Merge branch 'mediatek-drm-fixes-4.19' of https://github.com/ckhu-mediatek/linux.git-tags into drm-fixes

"Here are some fixes for mediatek drm driver."

Mostly fixes around the RDMA and Overlay

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: CK Hu <ck.hu@mediatek.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1535346194.27648.5.camel@mtksdaap41
2 years agopowerpc: disable support for relative ksymtab references
Ard Biesheuvel [Wed, 29 Aug 2018 06:47:53 +0000 (08:47 +0200)]
powerpc: disable support for relative ksymtab references

The newly added code that emits ksymtab entries as pairs of 32-bit
relative references interacts poorly with the way powerpc lays out its
address space: when a module exports a per-CPU variable, the primary
module region covering the ksymtab entry -and thus the 32-bit relative
reference- is too far away from the actual per-CPU variable's base
address (to which the per-CPU offsets are applied to obtain the
respective address of each CPU's copy), resulting in corruption when the
module loader attempts to resolve symbol references of modules that are
loaded on top and link to the exported per-CPU symbol.

So let's disable this feature on powerpc.  Even though it implements
CONFIG_RELOCATABLE, it does not implement CONFIG_RANDOMIZE_BASE and so
KASLR kernels (which are the main target of the feature) do not exist on
powerpc anyway.

Reported-by: Andreas Schwab <schwab@linux-m68k.org>
Suggested-by: Nicholas Piggin <nicholas.piggin@gmail.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2 years agoMerge tag 'hwmon-for-linus-v4.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Wed, 29 Aug 2018 23:03:45 +0000 (16:03 -0700)]
Merge tag 'hwmon-for-linus-v4.19-rc2' of git://git./linux/kernel/git/groeck/linux-staging

Pull hwmon fixes from Guenter Roeck:

 - Fix potential Spectre v1 in nct6775

 - Add error checking to adt7475 driver

 - Fix reading shunt resistor value in ina2xx driver

* tag 'hwmon-for-linus-v4.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (nct6775) Fix potential Spectre v1
  hwmon: (adt7475) Make adt7475_read_word() return errors
  hwmon: (adt7475) Potential error pointer dereferences
  hwmon: (ina2xx) fix sysfs shunt resistor read access

2 years agoMerge tag 'for_v4.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Linus Torvalds [Wed, 29 Aug 2018 21:56:45 +0000 (14:56 -0700)]
Merge tag 'for_v4.19-rc2' of git://git./linux/kernel/git/jack/linux-fs

Pull misc fs fixes from Jan Kara:

 - make UDF to properly mount media created by Win7

 - make isofs to properly refuse devices with large physical block size

 - fix a Spectre gadget in quotactl(2)

 - fix a warning in fsnotify code hit by syzkaller

* tag 'for_v4.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  udf: Fix mounting of Win7 created UDF filesystems
  udf: Remove dead code from udf_find_fileset()
  fs/quota: Fix spectre gadget in do_quotactl
  fs/quota: Replace XQM_MAXQUOTAS usage with MAXQUOTAS
  isofs: reject hardware sector size > 2048 bytes
  fsnotify: fix false positive warning on inode delete