Messages in this thread Patch in this message | | | From | Julia Lawall <> | Subject | [PATCH 1/14] drivers/rpmsg/virtio_rpmsg_bus.c: fix error return code | Date | Sun, 19 Aug 2012 10:44:17 +0200 |
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From: Julia Lawall <Julia.Lawall@lip6.fr>
Initialize return variable before exiting on an error path.
A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/)
// <smpl> ( if@p1 (\(ret < 0\|ret != 0\)) { ... return ret; } | ret@p1 = 0 ) ... when != ret = e1 when != &ret *if(...) { ... when != ret = e2 when forall return ret; }
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
--- drivers/rpmsg/virtio_rpmsg_bus.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/rpmsg/virtio_rpmsg_bus.c b/drivers/rpmsg/virtio_rpmsg_bus.c index 590cfaf..c5e66d9 100644 --- a/drivers/rpmsg/virtio_rpmsg_bus.c +++ b/drivers/rpmsg/virtio_rpmsg_bus.c @@ -959,8 +959,10 @@ static int rpmsg_probe(struct virtio_device *vdev) bufs_va = dma_alloc_coherent(vdev->dev.parent->parent, RPMSG_TOTAL_BUF_SPACE, &vrp->bufs_dma, GFP_KERNEL); - if (!bufs_va) + if (!bufs_va) { + err = -ENOMEM; goto vqs_del; + } dev_dbg(&vdev->dev, "buffers: va %p, dma 0x%llx\n", bufs_va, (unsigned long long)vrp->bufs_dma);
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