[Intel-gfx] [PATCH] drm/i915/selftests: Silence compiler warning in igt_ctx_exec

[Chris Wilson]

The compiler doesn't always spot the guard that object is allocated on
the first pass, leading to:

drivers/gpu/drm/i915/selftests/i915_gem_context.c: warning: 'obj' may be used uninitialized in this function [-Wuninitialized]:  => 370:8

Reported-by: Geert Uytterhoeven <geert at linux-m68k.org>
Fixes: 791ff39ae32a ("drm/i915: Live testing for context execution")
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
Cc: Matthew Auld <matthew.auld at intel.com>
c: <drm-intel-fixes at lists.freedesktop.org> # v4.12-rc1+
---
 drivers/gpu/drm/i915/selftests/i915_gem_context.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_context.c b/drivers/gpu/drm/i915/selftests/i915_gem_context.c
index 1afb8b06e3e1..4b38134eafd2 100644
--- a/drivers/gpu/drm/i915/selftests/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/selftests/i915_gem_context.c
@@ -320,7 +320,7 @@ static unsigned long max_dwords(struct drm_i915_gem_object *obj)
 static int igt_ctx_exec(void *arg)
 {
 	struct drm_i915_private *i915 = arg;
-	struct drm_i915_gem_object *obj;
+	struct drm_i915_gem_object *uninitialized_var(obj);
 	struct drm_file *file;
 	IGT_TIMEOUT(end_time);
 	LIST_HEAD(objects);
-- 
2.11.0