Hi,
This started somewhere between Kernel 4.2 and 4.3-rc1,
but I only noticed it a day ago.
The first S3 suspend after a fresh boot works fine.
Thereafter, suspends simply resume again immediately.
I get the following errors on my console:
[ 152.697247] i915 0000:00:02.0: GEM idle failed, resume might fail
[ 152.697258] pci_pm_suspend(): i915_pm_suspend+0x0/0x50 [i915] returns -11
[ 152.697262] dpm_run_callback(): pci_pm_suspend+0x0/0x140 returns -11
[ 152.697264] PM: Device 0000:00:02.0 failed to suspend async: error -11
[ 152.697306] PM: Some devices failed to suspend, or early wake event detected
The issue is not limited to my normal way of doing suspend, using "pm-suspend".
It also happens using the "echo mem > /sys/power/state" method.
The kernel was bisected, and the result was double checked by clean compiles
of the first bad commit and the immediately preceding commit. Bisect results
copied below:
$ git bisect good
dc4be6071a24f0d2da6af8ce16c19f276ac4d7a2 is the first bad commit
commit dc4be6071a24f0d2da6af8ce16c19f276ac4d7a2
Author: John Harrison <John.C.Harrison@xxxxxxxxx>
Date: Fri May 29 17:43:39 2015 +0100
drm/i915: Add explicit request management to i915_gem_init_hw()
Now that a single per ring loop is being done for all the different
intialisation steps in i915_gem_init_hw(), it is possible to add proper request
management as well. The last remaining issue is that the context enable call
eventually ends up within *_render_state_init() and this does its own private
_i915_add_request() call.
This patch adds explicit request creation and submission to the top level loop
and removes the add_request() from deep within the sub-functions.
v2: Updated for removal of batch_obj from add_request call in previous patch.
For: VIZ-5115
Signed-off-by: John Harrison <John.C.Harrison@xxxxxxxxx>
Reviewed-by: Tomas Elf <tomas.elf@xxxxxxxxx>
Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
:040000 040000 789c630ff3f5f07238a5df1bde79187c6c1251d0 2da3f7e20e2642d8eebd9f72528923c2ac53a8cb M drivers
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