diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-03-20 23:21:47 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-03-20 23:21:47 (GMT) |
| commit | cf2d9500a5a0df61713b56f2f40aa0b81a6f9f63 (patch) | |
| tree | 945afa7596fcdc4d960812dee1812c187d282bff /drivers/char | |
| parent | 3f3b55bf7833d81d00c793d722e2af58d3b12963 (diff) | |
| parent | d714aaf649460cbfd5e82e75520baa856b4fa0a0 (diff) | |
| download | linux-cf2d9500a5a0df61713b56f2f40aa0b81a6f9f63.tar.xz | |
Merge branch 'usb-linus' into usb-next
This is to pick up the fixes in that branch, and let Alan fix the merge
error in drivers/usb/host/ehci-timer.c better than I just did (as I know
I messed it up...)
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/hw_random/virtio-rng.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/char/hw_random/virtio-rng.c b/drivers/char/hw_random/virtio-rng.c index 10fd71c..6bf4d47 100644 --- a/drivers/char/hw_random/virtio-rng.c +++ b/drivers/char/hw_random/virtio-rng.c @@ -92,14 +92,22 @@ static int probe_common(struct virtio_device *vdev) { int err; + if (vq) { + /* We only support one device for now */ + return -EBUSY; + } /* We expect a single virtqueue. */ vq = virtio_find_single_vq(vdev, random_recv_done, "input"); - if (IS_ERR(vq)) - return PTR_ERR(vq); + if (IS_ERR(vq)) { + err = PTR_ERR(vq); + vq = NULL; + return err; + } err = hwrng_register(&virtio_hwrng); if (err) { vdev->config->del_vqs(vdev); + vq = NULL; return err; } @@ -112,6 +120,7 @@ static void remove_common(struct virtio_device *vdev) busy = false; hwrng_unregister(&virtio_hwrng); vdev->config->del_vqs(vdev); + vq = NULL; } static int virtrng_probe(struct virtio_device *vdev) |