PCI/PCIe: Clear Root PME Status bits early during system resume

[muen/linux.git] / drivers / pci / pcie / pme.c

diff --git a/drivers/pci/pcie/pme.c b/drivers/pci/pcie/pme.c
index 2f3c904072273fcdaf5c5a660405281720dff7aa..073f0308c6b219f6f1cbb4f7bed32d3d59a0f1ec 100644 (file)
--- a/drivers/pci/pcie/pme.c
+++ b/drivers/pci/pcie/pme.c
@@ -26,9 +26,6 @@
 #include "../pci.h"
 #include "portdrv.h"
 
-#define PCI_EXP_RTSTA_PME      0x10000 /* PME status */
-#define PCI_EXP_RTSTA_PENDING  0x20000 /* PME pending */
-
 /*
  * If this switch is set, MSI will not be used for PCIe PME signaling.  This
  * causes the PCIe port driver to use INTx interrupts only, but it turns out
@@ -73,22 +70,6 @@ void pcie_pme_interrupt_enable(struct pci_dev *dev, bool enable)
        pci_write_config_word(dev, rtctl_pos, rtctl);
 }
 
-/**
- * pcie_pme_clear_status - Clear root port PME interrupt status.
- * @dev: PCIe root port or event collector.
- */
-static void pcie_pme_clear_status(struct pci_dev *dev)
-{
-       int rtsta_pos;
-       u32 rtsta;
-
-       rtsta_pos = pci_pcie_cap(dev) + PCI_EXP_RTSTA;
-
-       pci_read_config_dword(dev, rtsta_pos, &rtsta);
-       rtsta |= PCI_EXP_RTSTA_PME;
-       pci_write_config_dword(dev, rtsta_pos, rtsta);
-}
-
 /**
  * pcie_pme_walk_bus - Scan a PCI bus for devices asserting PME#.
  * @bus: PCI bus to scan.
@@ -253,7 +234,7 @@ static void pcie_pme_work_fn(struct work_struct *work)
                         * Clear PME status of the port.  If there are other
                         * pending PMEs, the status will be set again.
                         */
-                       pcie_pme_clear_status(port);
+                       pcie_clear_root_pme_status(port);
 
                        spin_unlock_irq(&data->lock);
                        pcie_pme_handle_request(port, rtsta & 0xffff);
@@ -378,7 +359,7 @@ static int pcie_pme_probe(struct pcie_device *srv)
 
        port = srv->port;
        pcie_pme_interrupt_enable(port, false);
-       pcie_pme_clear_status(port);
+       pcie_clear_root_pme_status(port);
 
        ret = request_irq(srv->irq, pcie_pme_irq, IRQF_SHARED, "PCIe PME", srv);
        if (ret) {
@@ -402,7 +383,7 @@ static int pcie_pme_suspend(struct pcie_device *srv)
 
        spin_lock_irq(&data->lock);
        pcie_pme_interrupt_enable(port, false);
-       pcie_pme_clear_status(port);
+       pcie_clear_root_pme_status(port);
        data->noirq = true;
        spin_unlock_irq(&data->lock);
 
@@ -422,7 +403,7 @@ static int pcie_pme_resume(struct pcie_device *srv)
 
        spin_lock_irq(&data->lock);
        data->noirq = false;
-       pcie_pme_clear_status(port);
+       pcie_clear_root_pme_status(port);
        pcie_pme_interrupt_enable(port, true);
        spin_unlock_irq(&data->lock);