[Intel-gfx] [PATCH 09/29] drm/i915: Fixup intel_wait_for_vblank*()

[Chris Wilson]

Add a msleep to intel_wait_for_vblank().

Change intel_wait_for_vblank_off() to repeat *until* timeout.

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Jesse Barnes <jbarnes at virtuousgeek.org>
---
 drivers/gpu/drm/i915/intel_display.c |    9 ++++++---
 1 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 6ccb797..d50830e 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -993,7 +993,7 @@ void intel_wait_for_vblank(struct drm_device *dev, int pipe)
 	/* Wait for vblank interrupt bit to set */
 	if (wait_for((I915_READ(pipestat_reg) &
 		      PIPE_VBLANK_INTERRUPT_STATUS) == 0,
-		     50, 0))
+		     50, 1))
 		DRM_DEBUG_KMS("vblank wait timed out\n");
 }
 
@@ -1019,9 +1019,12 @@ void intel_wait_for_vblank_off(struct drm_device *dev, int pipe)
 	/* Wait for the display line to settle */
 	do {
 		last_line = I915_READ(pipedsl_reg) & DSL_LINEMASK;
-		mdelay(5);
+		if (in_dbg_master())
+			mdelay(5);
+		else
+			msleep(5);
 	} while (((I915_READ(pipedsl_reg) & DSL_LINEMASK) != last_line) &&
-		 time_after(timeout, jiffies));
+		 !time_after(timeout, jiffies));
 
 	if (time_after(jiffies, timeout))
 		DRM_DEBUG_KMS("vblank wait timed out\n");
-- 
1.7.1