drm/i915: clean up udelay usage

udelay() of 20 milliseconds really ought to just use mdelay(), that avoids
the various wrap scenarios and also is more readable

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index d9c50ff..0b33760 100644 (file)
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -636,7 +636,7 @@ void
 intel_wait_for_vblank(struct drm_device *dev)
 {
        /* Wait for 20ms, i.e. one cycle at 50hz. */
-       udelay(20000);
+       mdelay(20);
 }
 
 static int