[PATCH v2 4/6] drm: remove dead WARN_ON NULL check after GFP_NOFAIL allocation
From: Gou Hao <hidden>
Date: 2026-07-24 02:30:29
Also in:
dri-devel, linux-mm, linux-rdma, lkml
Subsystem:
drm drivers, drm drivers and misc gpu patches, the rest · Maintainers:
David Airlie, Simona Vetter, Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann, Linus Torvalds
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 <redacted> --- 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