drm/i915: Report an earlier wedged event when suspending the engines
authorChris Wilson <chris@chris-wilson.co.uk>
Fri, 31 May 2019 11:32:45 +0000 (12:32 +0100)
committerChris Wilson <chris@chris-wilson.co.uk>
Thu, 6 Jun 2019 14:21:51 +0000 (15:21 +0100)
commitac543d7145bf3ad13f67a087196e6879e6993aac
treec4b87337e14fca69a9acb429edbdb4e2bd9054e8
parent1fe2d6f94f96e35f0d71721eb899f5f72d5b68bd
drm/i915: Report an earlier wedged event when suspending the engines

On i915_gem_load_power_context() we do care whether or not we succeed in
completing the switch back to the kernel context (via idling the
engines). Currently, we detect if an error occurs while we wait, but we
do not report one if it occurred beforehand (and the status of the
switch is undefined). Check the current terminally wedged status on
entering the wait, and report it after flushing the requests, as if it
had occurred during our own wait.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=110824
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190531113245.30042-1-chris@chris-wilson.co.uk
drivers/gpu/drm/i915/gem/i915_gem_pm.c