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

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.

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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@chromium.org

Queued for -next (with some slight modifications in the comments), thanks for the patch. -Daniel