[Intel-gfx] [PATCH] drm/i915: take mode config lock around crtc disable at suspend

2013-11-26 Thread Jesse Barnes 
This is just a theoretical issue, but we need to do this to prevent the
WARN in pipe_from_connector at suspend time.

https://bugs.freedesktop.org/show_bug.cgi?id=71978
Signed-off-by: Jesse Barnes jbar...@virtuousgeek.org
---
 drivers/gpu/drm/i915/i915_drv.c |2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 13076db..0ec0fb3 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -535,8 +535,10 @@ static int i915_drm_freeze(struct drm_device *dev)
 * Disable CRTCs directly since we want to preserve sw state
 * for _thaw.
 */
+   mutex_lock(dev-mode_config.mutex);
list_for_each_entry(crtc, dev-mode_config.crtc_list, head)
dev_priv-display.crtc_disable(crtc);
+   mutex_unlock(dev-mode_config.mutex);
 
intel_modeset_suspend_hw(dev);
}
-- 
1.7.9.5

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Re: [Intel-gfx] [PATCH] drm/i915: take mode config lock around crtc disable at suspend

2013-11-26 Thread Daniel Vetter 
On Tue, Nov 26, 2013 at 09:13:41AM -0800, Jesse Barnes wrote:
 This is just a theoretical issue, but we need to do this to prevent the
 WARN in pipe_from_connector at suspend time.
 
 https://bugs.freedesktop.org/show_bug.cgi?id=71978
 Signed-off-by: Jesse Barnes jbar...@virtuousgeek.org

Picked up for -fixes, thanks for the patch.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
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