]> git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/commit
drm/i915/icl: Drop spurious register read from icl_dbuf_slices_update
authorMika Kuoppala <mika.kuoppala@linux.intel.com>
Fri, 9 Nov 2018 14:09:23 +0000 (16:09 +0200)
committerJoonas Lahtinen <joonas.lahtinen@linux.intel.com>
Wed, 14 Nov 2018 11:17:45 +0000 (13:17 +0200)
commita22612301ae61d78a7c0c82dc556931a35db0e91
tree2d02e906e6cf1895763107e301ad9108238556c0
parent6a67a20366f894c172734f28c5646bdbe48a46e3
drm/i915/icl: Drop spurious register read from icl_dbuf_slices_update

Register DBUF_CTL_S2 is read and it's value is not used. As
there is no explanation why we should prime the hardware with
read, remove it as spurious.

Fixes: aa9664ffe863 ("drm/i915/icl: Enable 2nd DBuf slice only when needed")
Cc: Mahesh Kumar <mahesh1.kumar@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181109140924.2663-1-mika.kuoppala@linux.intel.com
(cherry picked from commit 8577c319b6511fbc391f3775225fecd8b979bc26)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
drivers/gpu/drm/i915/intel_runtime_pm.c