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| author | Wolfgang Wiedmeyer <wolfgit@wiedmeyer.de> | 2015-10-22 21:26:58 +0200 |
|---|---|---|
| committer | Wolfgang Wiedmeyer <wolfgit@wiedmeyer.de> | 2015-10-22 21:26:58 +0200 |
| commit | 786208aedd8f75b0720e36b2ca66b3a411417301 (patch) | |
| tree | e6e902ab383ca94842c8691a9e28e1a6aefc5695 /drivers/char/hw_random/virtio-rng.c | |
| parent | b99374450c03bf5081b88995d91d34fb9b2fd040 (diff) | |
| download | kernel_samsung_smdk4412-786208aedd8f75b0720e36b2ca66b3a411417301.zip kernel_samsung_smdk4412-786208aedd8f75b0720e36b2ca66b3a411417301.tar.gz kernel_samsung_smdk4412-786208aedd8f75b0720e36b2ca66b3a411417301.tar.bz2 | |
merged 3.0.101 tag
Diffstat (limited to 'drivers/char/hw_random/virtio-rng.c')
| -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 75f1cbd..ca7570d 100644 --- a/drivers/char/hw_random/virtio-rng.c +++ b/drivers/char/hw_random/virtio-rng.c @@ -88,14 +88,22 @@ static int virtrng_probe(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; } @@ -107,6 +115,7 @@ static void __devexit virtrng_remove(struct virtio_device *vdev) vdev->config->reset(vdev); hwrng_unregister(&virtio_hwrng); vdev->config->del_vqs(vdev); + vq = NULL; } static struct virtio_device_id id_table[] = { |