Ville Syrjälä ade754ec11 drm/i915: Protect force_bit with gmbus_mutex
Extend the protection of gmbus_mutex around the force_bit
RMW in intel_gmbus_force_bit(), in case someone gets the
idea of calling it from a separate thread while there's
other stuff happening on the same bus.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1457366220-29409-3-git-send-email-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
2016-04-12 13:20:58 +03:00
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