Merge tag 'drm-intel-next-2018-09-21' of git://anongit.freedesktop.org/drm/drm-intel...
[muen/linux.git] / drivers / gpu / drm / i915 / i915_gpu_error.c
index 1175fec08fe194b88e18075d790e94068763d5b1..2835cacd0d08ffd6b1e8158c818c56fcf5d99c95 100644 (file)
@@ -31,6 +31,7 @@
 #include <linux/stop_machine.h>
 #include <linux/zlib.h>
 #include <drm/drm_print.h>
+#include <linux/ascii85.h>
 
 #include "i915_gpu_error.h"
 #include "i915_drv.h"
@@ -517,35 +518,12 @@ void i915_error_printf(struct drm_i915_error_state_buf *e, const char *f, ...)
        va_end(args);
 }
 
-static int
-ascii85_encode_len(int len)
-{
-       return DIV_ROUND_UP(len, 4);
-}
-
-static bool
-ascii85_encode(u32 in, char *out)
-{
-       int i;
-
-       if (in == 0)
-               return false;
-
-       out[5] = '\0';
-       for (i = 5; i--; ) {
-               out[i] = '!' + in % 85;
-               in /= 85;
-       }
-
-       return true;
-}
-
 static void print_error_obj(struct drm_i915_error_state_buf *m,
                            struct intel_engine_cs *engine,
                            const char *name,
                            struct drm_i915_error_object *obj)
 {
-       char out[6];
+       char out[ASCII85_BUFSZ];
        int page;
 
        if (!obj)
@@ -567,12 +545,8 @@ static void print_error_obj(struct drm_i915_error_state_buf *m,
                        len -= obj->unused;
                len = ascii85_encode_len(len);
 
-               for (i = 0; i < len; i++) {
-                       if (ascii85_encode(obj->pages[page][i], out))
-                               err_puts(m, out);
-                       else
-                               err_puts(m, "z");
-               }
+               for (i = 0; i < len; i++)
+                       err_puts(m, ascii85_encode(obj->pages[page][i], out));
        }
        err_puts(m, "\n");
 }