drm/i915/gt: Prevent error pointer dereference
authorDan Carpenter <dan.carpenter@linaro.org>
Wed, 13 Sep 2023 08:17:41 +0000 (11:17 +0300)
committerRodrigo Vivi <rodrigo.vivi@intel.com>
Wed, 20 Sep 2023 14:55:30 +0000 (10:55 -0400)
commitf17cc0f11fa18c06b4938c20f0244620199af0b0
treed4a647c9ff6702b686e9aa556df10b0c1b64ff09
parentce9ecca0238b140b88f43859b211c9fdfd8e5b70
drm/i915/gt: Prevent error pointer dereference

Move the check for "if (IS_ERR(obj))" in front of the call to
i915_gem_object_set_cache_coherency() which dereferences "obj".
Otherwise it will lead to a crash.

Fixes: 43aa755eae2c ("drm/i915/mtl: Update cache coherency setting for context structure")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/455b2279-2e08-4d00-9784-be56d8ee42e3@moroto.mountain
(cherry picked from commit c92ec50822fb84306d951520d81919328421acbd)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
drivers/gpu/drm/i915/gt/intel_lrc.c