[PATCH] nouveau/u_memcpya: fix NULL vs error pointer bug

[Dan Carpenter]

The u_memcpya() function is supposed to return error pointers on
error.  Returning NULL will lead to an Oops.

Fixes: 68132cc6d1bc ("nouveau/u_memcpya: use vmemdup_user")
Signed-off-by: Dan Carpenter <dan.carpenter at linaro.org>
---
 drivers/gpu/drm/nouveau/nouveau_drv.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.h b/drivers/gpu/drm/nouveau/nouveau_drv.h
index 3666a7403e47..52a708a98915 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drv.h
+++ b/drivers/gpu/drm/nouveau/nouveau_drv.h
@@ -193,7 +193,7 @@ u_memcpya(uint64_t user, unsigned int nmemb, unsigned int size)
 	size_t bytes;
 
 	if (unlikely(check_mul_overflow(nmemb, size, &bytes)))
-		return NULL;
+		return ERR_PTR(-ENOMEM);
 	return vmemdup_user(userptr, bytes);
 }
 
-- 
2.39.2