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drm: virtio: fix kmem_cache_alloc error check

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kmem_cache_alloc returns NULL on error, not ERR_PTR.

Fixes: f5985bf9ca
Reported-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1489393346-13874-1-git-send-email-kraxel@redhat.com
This commit is contained in:
Gerd Hoffmann 2017-03-13 09:22:26 +01:00
parent 265ffed739
commit 43c2794022
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/virtio/virtgpu_vq.c
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@ -97,8 +97,8 @@ virtio_gpu_get_vbuf(struct virtio_gpu_device *vgdev,
struct virtio_gpu_vbuffer *vbuf;
vbuf = kmem_cache_alloc(vgdev->vbufs, GFP_KERNEL);
if (IS_ERR(vbuf))
return ERR_CAST(vbuf);
if (!vbuf)
return ERR_PTR(-ENOMEM);
memset(vbuf, 0, VBUFFER_SIZE);
BUG_ON(size > MAX_INLINE_CMD_SIZE);