From ebaf75adbec33356d746ca7df36b72d31e7e5109 Mon Sep 17 00:00:00 2001
From: Gou Hao <gouhao@uniontech.com>
Date: Fri, 24 Jul 2026 10:28:49 +0800
Subject: [PATCH] drm: remove dead WARN_ON NULL check after GFP_NOFAIL
 allocation
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kzalloc_obj with the __GFP_NOFAIL flag will never return NULL, so the
subsequent WARN_ON(!ctx) is unreachable dead code.  Remove it.

Link: https://lore.kernel.org/20260724022851.466017-5-gouhao@uniontech.com
Signed-off-by: Gou Hao <gouhao@uniontech.com>
Cc: Bharat Potnuri <bharat@chelsio.com>
Cc: Cédric Le Goater <clg@kaod.org>
Cc: Dave Airlie <airlied@gmail.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: jiazhenyuan <jiazhenyuan@uniontech.com>
Cc: Leon Romanovsky <leon@kernel.org>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nam Cao <namcao@linutronix.de>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Nilay Shroff <nilay@linux.ibm.com>
Cc: Shrikanth Hegde <sshegde@linux.ibm.com>
Cc: Thomas Zimemrmann <tzimmermann@suse.de>
Cc: Wentao Guan <guanwentao@uniontech.com>
Cc: Alistair Popple <apopple@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
 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 2c806b0146d6..e14814c30d8c 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: