[PATCH v2 4/6] drm: remove dead WARN_ON NULL check after GFP_NOFAIL allocation

kzalloc_obj with the __GFP_NOFAIL flag will never return NULL, so the
subsequent WARN_ON(!ctx) is unreachable dead code. Remove it.

Signed-off-by: Gou Hao <[email protected]>
---
 drivers/gpu/drm/drm_modeset_lock.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/gpu/drm/drm_modeset_lock.c b/drivers/gpu/drm/drm_modeset_lock.c
index 2c806b0146d67..e14814c30d8c0 100644
--- a/drivers/gpu/drm/drm_modeset_lock.c
+++ b/drivers/gpu/drm/drm_modeset_lock.c
@@ -149,11 +149,7 @@ void drm_modeset_lock_all(struct drm_device *dev)
 	int ret;
 
 	ctx = kzalloc_obj(*ctx, GFP_KERNEL | __GFP_NOFAIL);
-	if (WARN_ON(!ctx))
-		return;
-
 	mutex_lock(&config->mutex);
-
 	drm_modeset_acquire_init(ctx, 0);
 
 retry:
-- 
2.20.1