]> git.kernelconcepts.de Git - karo-tx-linux.git/commit
drm/i915: Check idle to active before processing CSQ
authorMika Kuoppala <mika.kuoppala@linux.intel.com>
Thu, 6 Aug 2015 14:09:17 +0000 (17:09 +0300)
committerDaniel Vetter <daniel.vetter@ffwll.ch>
Fri, 14 Aug 2015 15:50:40 +0000 (17:50 +0200)
commit031a8936dc660e7ae2485eb7493eba1876cf25fe
tree196c1be4c9261f6371d9917a23f402b7d3d1b687
parent500ea70d503ed9ba448611049a4a718c2761a5f2
drm/i915: Check idle to active before processing CSQ

If idle to active bit is set, the rest of the fields
in CSQ are not valid.

Bail out early if this is the case in order to prevent
rest of the loop inspecting stale values.

This was found by Bspec/code inspection. Doesn't seem to fix any of
the known issues.

Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Arun Siluvery <arun.siluvery@linux.intel.com>
[danvet: Add note about how this was found.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
drivers/gpu/drm/i915/intel_lrc.c