drm/i915/perf: fix flex eu registers programming
authorLionel Landwerlin <lionel.g.landwerlin@intel.com>
Thu, 3 Aug 2017 16:58:07 +0000 (17:58 +0100)
committerLionel Landwerlin <lionel.g.landwerlin@intel.com>
Thu, 3 Aug 2017 17:17:47 +0000 (18:17 +0100)
commit01d928e9a1644eb2e28f684905f888e700c7b9dc
treee5410ae117517d5ee4d8d179acef3c24a5b710b3
parent59f3da1e0ecb48e28c2ff6ffed4c354997452e77
drm/i915/perf: fix flex eu registers programming

We were reserving fewer dwords in the ring than necessary. Indeed
we're always writing all registers once, so discard the actual number
of registers given by the user and just program the whitelisted ones
once.

Fixes: 19f81df2859e ("drm/i915/perf: Add OA unit support for Gen 8+")
Reported-by: Matthew Auld <matthew.william.auld@gmail.com>
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Cc: <stable@vger.kernel.org> # v4.12+
Link: https://patchwork.freedesktop.org/patch/msgid/20170803165812.2373-6-lionel.g.landwerlin@intel.com
drivers/gpu/drm/i915/i915_perf.c