Intel i915 freeze on latest git

[Francesco Allertsen]

On Tue, Feb 01, 2011 at 04:57:37PM +0000, Chris Wilson wrote:
> So, if this is the issue, then simply commenting out the tweaking of
> RSTDBYCTL in ironlake_enable_rc6() should prevent the hang.

I've tried the following patch

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index d7f237d..7769768 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -6527,7 +6527,6 @@ void ironlake_enable_rc6(struct drm_device *dev)
 	ADVANCE_LP_RING();
 
 	I915_WRITE(PWRCTXA, dev_priv->pwrctx->gtt_offset | PWRCTX_EN);
-	I915_WRITE(RSTDBYCTL, I915_READ(RSTDBYCTL) & ~RCX_SW_EXIT);
 }
 
 /* Set up chip specific display functions */

And it still hangs.

Bye
Francesco