[PATCH] gpu: drm: nouveau: add null check before pointer dereference

From	"Gustavo A. R. Silva" <garsilva@embeddedor.com>
Newsgroups	linux.kernel
Subject	[PATCH] gpu: drm: nouveau: add null check before pointer dereference
Date	2017-05-22 21:20 +0200
Message-ID	<tK121-1cI-7@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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Add null check before dereferencing pointer asyc

Addresses-Coverity-ID: 1397932
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
---
 drivers/gpu/drm/nouveau/nv50_display.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/nouveau/nv50_display.c b/drivers/gpu/drm/nouveau/nv50_display.c
index a766324..052a60a 100644
--- a/drivers/gpu/drm/nouveau/nv50_display.c
+++ b/drivers/gpu/drm/nouveau/nv50_display.c
@@ -2107,7 +2107,8 @@ nv50_head_atomic_check(struct drm_crtc *crtc, struct drm_crtc_state *state)
 					asyc->set.dither = true;
 			}
 		} else {
-			asyc->set.mask = ~0;
+			if (asyc)
+				asyc->set.mask = ~0;
 			asyh->set.mask = ~0;
 		}
 
-- 
2.5.0

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[PATCH] gpu: drm: nouveau: add null check before pointer dereference "Gustavo A. R. Silva" <garsilva@embeddedor.com> - 2017-05-22 21:20 +0200
  Re: [PATCH] gpu: drm: nouveau: add null check before pointer  dereference Ben Skeggs <bskeggs@redhat.com> - 2017-05-23 00:30 +0200

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