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| author |   Chris Wilson <chris@chris-wilson.co.uk> | 2017-03-08 14:22:38 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2017-03-08 20:47:07 +0000 |
| commit | 5b5554c51d38a227c4c5bee6e57026e4ebb0bde9 (patch) | |
| tree | 3175a217fd0fbd528f7e3f7f6e74adc062e506ef /drivers/gpu/drm/i915/i915_gem_request.h | |
| parent | drm/i915: Purge i915_gem_object_is_dead() (diff) | |
| download | linux-dev-5b5554c51d38a227c4c5bee6e57026e4ebb0bde9.tar.xz linux-dev-5b5554c51d38a227c4c5bee6e57026e4ebb0bde9.zip | |
drm/i915: Check for an invalid seqno before __i915_gem_request_started
__i915_gem_request_started() asserts that the seqno is valid, but
i915_spin_request() was not checking before querying whether the request
had started.
Reported-by: Michał Winiarski <michal.winiarski@intel.com>
Fixes: 754c9fd57649 ("drm/i915: Protect the request->global_seqno with the engine->timeline lock")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Michał Winiarski <michal.winiarski@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170308142238.22994-1-chris@chris-wilson.co.uk
Reviewed-by: Michał Winiarski <michal.winiarski@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem_request.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_request.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_request.h b/drivers/gpu/drm/i915/i915_gem_request.h index 5018e55922f0..0cef887b0de4 100644 --- a/drivers/gpu/drm/i915/i915_gem_request.h +++ b/drivers/gpu/drm/i915/i915_gem_request.h @@ -348,6 +348,9 @@ static inline bool i915_spin_request(const struct drm_i915_gem_request *request, u32 seqno; seqno = i915_gem_request_global_seqno(request); + if (!seqno) + return 0; + return (__i915_gem_request_started(request, seqno) && __i915_spin_request(request, seqno, state, timeout_us)); } |