[Intel-gfx] [PATCH 1/6] drm/i915: Remove misleading comment in request_alloc

[Michał Winiarski]

Passing NULL ctx to request_alloc would lead to null-ptr-deref.
Let's replace the comment with GEM_BUG_ON.

Signed-off-by: Michał Winiarski <michal.winiarski at intel.com>
---
 drivers/gpu/drm/i915/i915_gem_request.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_gem_request.c b/drivers/gpu/drm/i915/i915_gem_request.c
index 1ccf252..1352d3c 100644
--- a/drivers/gpu/drm/i915/i915_gem_request.c
+++ b/drivers/gpu/drm/i915/i915_gem_request.c
@@ -538,9 +538,6 @@ submit_notify(struct i915_sw_fence *fence, enum i915_sw_fence_notify state)
  *
  * @engine: engine that we wish to issue the request on.
  * @ctx: context that the request will be associated with.
- *       This can be NULL if the request is not directly related to
- *       any specific user context, in which case this function will
- *       choose an appropriate context to use.
  *
  * Returns a pointer to the allocated request if successful,
  * or an error code if not.
@@ -554,6 +551,7 @@ i915_gem_request_alloc(struct intel_engine_cs *engine,
 	struct intel_ring *ring;
 	int ret;
 
+	GEM_BUG_ON(!ctx);
 	lockdep_assert_held(&dev_priv->drm.struct_mutex);
 
 	/* ABI: Before userspace accesses the GPU (e.g. execbuffer), report
-- 
2.9.4