[PATCH] drm/i915: Fix race condition in accessing GMBUS

[Daniel Vetter]

On Mon, Feb 13, 2012 at 05:36:54PM -0500, Yufeng Shen wrote:
> Moved gmbus_mutex below intel_gmbus and added comments.
> Rebased to drm-intel-next-queued.
> 
> ----------------------------------------------------------------
> 
> GMBUS has several ports and each has it's own corresponding
> I2C adpater. When multiple I2C adapters call gmbus_xfer() at
> the same time there is a race condition in using the underlying
> GMBUS controller. Fixing this by adding a mutex lock when calling
> gmbus_xfer().
> 
> Signed-off-by: Yufeng Shen <miletus at chromium.org>

Queued for -next (with some slight modifications in the comments), thanks
for the patch.
-Daniel
-- 
Daniel Vetter
Mail: daniel at ffwll.ch
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