drm/i915: checking for NULL instead of IS_ERR() in mock selftests

i915_gem_request_alloc() uses error pointers.  It never returns NULLs.

Fixes: 72928da3bdd2 ("drm/i915: Mock infrastructure for request emission")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170413195217.GA26108@mwanda
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
(cherry picked from commit be02f7556447a0dee672acb5e462f03377b98ae8)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>

diff --git a/drivers/gpu/drm/i915/selftests/mock_request.c b/drivers/gpu/drm/i915/selftests/mock_request.c
index 0e8d2e7f8c7032ad73b4e99899dd21cfb0d414b5..8097e3693ec484332b333f35e98c012d17e7bf0e 100644 (file)
--- a/drivers/gpu/drm/i915/selftests/mock_request.c
+++ b/drivers/gpu/drm/i915/selftests/mock_request.c
@@ -35,7 +35,7 @@ mock_request(struct intel_engine_cs *engine,
 
        /* NB the i915->requests slab cache is enlarged to fit mock_request */
        request = i915_gem_request_alloc(engine, context);
-       if (!request)
+       if (IS_ERR(request))
                return NULL;
 
        mock = container_of(request, typeof(*mock), base);