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drm/i915: Flush GT idle status upon reset 

Upon resetting the GPU, we force the engines to be idle by clearing
their request lists. However, I neglected to clear the GT active status
and so the next request following the reset was not marking the device
as busy again. (We had to wait until any outstanding retire worker
finally ran and cleared the active status.)

Fixes: 67d97da349 ("drm/i915: Only start retire worker when idle")
Testcase: igt/pm_rps/reset
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1468397438-21226-1-git-send-email-chris@chris-wilson.co.uk
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
(cherry picked from commit b913b33c43)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Chris Wilson 2016-07-13 09:10:31 +01:00 committed by Jani Nikula
parent 29b4817d40
commit b06bc7ec4d
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/i915/i915_gem.c
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@ -3169,6 +3169,8 @@ static void i915_gem_reset_engine_cleanup(struct intel_engine_cs *engine)
}
intel_ring_init_seqno(engine, engine->last_submitted_seqno);
engine->i915->gt.active_engines &= ~intel_engine_flag(engine);
}
void i915_gem_reset(struct drm_device *dev)
@ -3186,6 +3188,7 @@ void i915_gem_reset(struct drm_device *dev)
for_each_engine(engine, dev_priv)
i915_gem_reset_engine_cleanup(engine);
mod_delayed_work(dev_priv->wq, &dev_priv->gt.idle_work, 0);
i915_gem_context_reset(dev);