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| author | Amit Shah <amit.shah@redhat.com> | 2012-12-10 09:45:12 +1030 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2012-12-18 15:20:34 +1030 |
| commit | 49e86f16866fbf8e3c9a6b0770eb6f3c167f4b72 (patch) | |
| tree | 3979a5769d8f03d723b306f7f5bdbcb3e5d0a81e /drivers/char | |
| parent | 9ed4cb073438e2154778f0d693d966359afd6549 (diff) | |
| download | linux-49e86f16866fbf8e3c9a6b0770eb6f3c167f4b72.tar.gz linux-49e86f16866fbf8e3c9a6b0770eb6f3c167f4b72.tar.bz2 linux-49e86f16866fbf8e3c9a6b0770eb6f3c167f4b72.zip | |
virtio: console: don't rely on virtqueue_add_buf() returning capacity.
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/virtio_console.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c index 8ab9c3d4bf13..89bdc31a3dc6 100644 --- a/drivers/char/virtio_console.c +++ b/drivers/char/virtio_console.c @@ -396,6 +396,8 @@ static int add_inbuf(struct virtqueue *vq, struct port_buffer *buf) ret = virtqueue_add_buf(vq, sg, 0, 1, buf, GFP_ATOMIC); virtqueue_kick(vq); + if (!ret) + ret = vq->num_free; return ret; } |