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drm/i915: Clear engine irq posted following a reset

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When the GPU is reset, we want to discard all pending notifications as
either we have manually completed them, or they are no longer
applicable. Make sure we do reset the engine->irq_posted prior to
re-enabling the engine (e.g. the interrupt tasklets) in
i915_gem_reset_finish_engine().

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Michel Thierry <michel.thierry@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170721123238.16428-11-chris@chris-wilson.co.uk
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Chris Wilson 2017-07-21 13:32:29 +01:00 committed by Daniel Vetter
parent bf2eac3bee
commit ed454f2cd6
1 changed files with 2 additions and 0 deletions
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2
drivers/gpu/drm/i915/i915_gem.c
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@ -2964,6 +2964,8 @@ static bool i915_gem_reset_request(struct drm_i915_gem_request *request)
void i915_gem_reset_engine(struct intel_engine_cs *engine,
struct drm_i915_gem_request *request)
{
engine->irq_posted = 0;
if (request && i915_gem_reset_request(request)) {
DRM_DEBUG_DRIVER("resetting %s to restart from tail of request 0x%x\n",
engine->name, request->global_seqno);