[Intel-gfx] [PATCH] drm/i915: don't clobber the pipe param in sanitize_modesetting

Daniel Vetter daniel.vetter at ffwll.ch
Sun May 13 22:08:14 CEST 2012


... we need it later on in the function to clean up pipe <-> plane
associations. This regression has been introduced in

commit f47166d2b0001fcb752b40c5a2d4db986dfbea68
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Thu Mar 22 15:00:50 2012 +0000

    drm/i915: Sanitize BIOS debugging bits from PIPECONF

Spotted by staring at debug output of an (as it turns out) totally
unrelated bug.

Cc: Chris Wilson <chris at chris-wilson.co.uk>
Cc: stable at kernel.org (the regression was Cc: stable, too)
Signed-Off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
---
 drivers/gpu/drm/i915/intel_display.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index fb05d9d..525dc65 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -6257,9 +6257,10 @@ static void intel_sanitize_modesetting(struct drm_device *dev,
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	u32 reg, val;
+	int i;
 
 	/* Clear any frame start delays used for debugging left by the BIOS */
-	for_each_pipe(pipe) {
+	for_each_pipe(i) {
 		reg = PIPECONF(pipe);
 		I915_WRITE(reg, I915_READ(reg) & ~PIPECONF_FRAME_START_DELAY_MASK);
 	}
-- 
1.7.10




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