diff options
| author | Imre Deak <imre.deak@intel.com> | 2016-10-13 14:34:06 +0300 |
|---|---|---|
| committer | Imre Deak <imre.deak@intel.com> | 2016-10-14 14:33:57 +0300 |
| commit | 4c494a5769cd0de92638b25960ba0158c36088a6 (patch) | |
| tree | 7f6cc208eadfd6a888165326649e12a81c3d4a2a /drivers/net/ifb.c | |
| parent | 5db9401983ac7bf9ddc45de54c53ccfa31d21774 (diff) | |
drm/i915: Fix mismatched INIT power domain disabling during suspend
Currently the display INIT power domain disabling/enabling happens in a
mismatched way in the suspend/resume_early hooks respectively. This can
leave display power wells incorrectly disabled in the resume hook if the
suspend sequence is aborted for some reason resulting in the
suspend/resume hooks getting called but the suspend_late/resume_early
hooks being skipped. In particular this change fixes "Unclaimed read
from register 0x1e1204" on BYT/BSW triggered from i915_drm_resume()->
intel_pps_unlock_regs_wa() when suspending with /sys/power/pm_test set
to devices.
Fixes: 85e90679335f ("drm/i915: disable power wells on suspend")
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: David Weinehall <david.weinehall@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1476358446-11621-1-git-send-email-imre.deak@intel.com
Diffstat (limited to 'drivers/net/ifb.c')
0 files changed, 0 insertions, 0 deletions