linux-kernel - [PATCH] drm: virtio: fix eno.cocci warnings

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Message-ID: <20170314123451.GA51889@lkp-sb04.lkp.intel.com>
Date:   Tue, 14 Mar 2017 20:34:51 +0800
From:   kbuild test robot <fengguang.wu@...el.com>
To:     Gerd Hoffmann <kraxel@...hat.com>
Cc:     kbuild-all@...org, Daniel Vetter <daniel.vetter@...ll.ch>,
        David Airlie <airlied@...ux.ie>,
        dri-devel@...ts.freedesktop.org,
        virtualization@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] drm: virtio: fix eno.cocci warnings

drivers/gpu/drm/virtio/virtgpu_vq.c:100:5-11: ERROR: allocation function on line 99 returns NULL not ERR_PTR on failure

 The various basic memory allocation functions don't return ERR_PTR

Generated by: scripts/coccinelle/null/eno.cocci

Signed-off-by: Fengguang Wu <fengguang.wu@...el.com>
---

 virtgpu_vq.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/virtio/virtgpu_vq.c
+++ b/drivers/gpu/drm/virtio/virtgpu_vq.c
@@ -97,7 +97,7 @@ virtio_gpu_get_vbuf(struct virtio_gpu_de
 	struct virtio_gpu_vbuffer *vbuf;
 
 	vbuf = kmem_cache_alloc(vgdev->vbufs, GFP_KERNEL);
-	if (IS_ERR(vbuf))
+	if (!vbuf)
 		return ERR_CAST(vbuf);
 	memset(vbuf, 0, VBUFFER_SIZE);