This is a note to let you know that I've just added the patch titled
drm/i915: Add lock on drm_helper_resume_force_mode
to the 3.0-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-i915-add-lock-on-drm_helper_resume_force_mode.patch
and it can be found in the queue-3.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 927a2f119e8235238a2fc64871051b16c9bdae75 Mon Sep 17 00:00:00 2001
From: Sean Paul <[email protected]>
Date: Fri, 23 Mar 2012 08:52:58 -0400
Subject: drm/i915: Add lock on drm_helper_resume_force_mode
From: Sean Paul <[email protected]>
commit 927a2f119e8235238a2fc64871051b16c9bdae75 upstream.
i915_drm_thaw was not locking the mode_config lock when calling
drm_helper_resume_force_mode. When there were multiple wake sources,
this caused FDI training failure on SNB which in turn corrupted the
display.
Signed-off-by: Sean Paul <[email protected]>
Reviewed-by: Chris Wilson <[email protected]>
Signed-Off-by: Daniel Vetter <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/gpu/drm/i915/i915_drv.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -442,7 +442,9 @@ static int i915_drm_thaw(struct drm_devi
drm_irq_install(dev);
/* Resume the modeset for every activated CRTC */
+ mutex_lock(&dev->mode_config.mutex);
drm_helper_resume_force_mode(dev);
+ mutex_unlock(&dev->mode_config.mutex);
if (IS_IRONLAKE_M(dev))
ironlake_enable_rc6(dev);
Patches currently in stable-queue which might be from [email protected] are
queue-3.0/drm-i915-add-lock-on-drm_helper_resume_force_mode.patch
--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
