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virtio: return ENOMEM on out of memory

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add_buf returns ring size on out of memory,
this is not what devices expect.

Signed-off-by: Michael S. Tsirkin <[email protected]>
Acked-by: Amit Shah <[email protected]>
Signed-off-by: Rusty Russell <[email protected]>
Cc: [email protected] # .34.x
This commit is contained in:
Michael S. Tsirkin 2010-06-10 18:16:11 +03:00 • committed by Rusty Russell
commit 686d363786
1 changed files with 1 additions and 1 deletions
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drivers/virtio/virtio_ring.c
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@ -119,7 +119,7 @@ static int vring_add_indirect(struct vring_virtqueue *vq,
desc = kmalloc((out + in) * sizeof(struct vring_desc), gfp);
if (!desc)
return vq->vring.num;
return -ENOMEM;
/* Transfer entries from the sg list into the indirect page */
for (i = 0; i < out; i++) {