diff options
Diffstat (limited to 'drivers/virtio/virtio.c')
| -rw-r--r-- | drivers/virtio/virtio.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/virtio/virtio.c b/drivers/virtio/virtio.c index 13866789b35..7084e7e146c 100644 --- a/drivers/virtio/virtio.c +++ b/drivers/virtio/virtio.c @@ -2,6 +2,9 @@ #include <linux/spinlock.h> #include <linux/virtio_config.h> +/* Unique numbering for virtio devices. */ +static unsigned int dev_index; + static ssize_t device_show(struct device *_d, struct device_attribute *attr, char *buf) { @@ -121,9 +124,9 @@ static int virtio_dev_probe(struct device *_d) if (err) add_status(dev, VIRTIO_CONFIG_S_FAILED); else { - add_status(dev, VIRTIO_CONFIG_S_DRIVER_OK); /* They should never have set feature bits beyond 32 */ dev->config->set_features(dev, dev->features[0]); + add_status(dev, VIRTIO_CONFIG_S_DRIVER_OK); } return err; } @@ -166,7 +169,10 @@ int register_virtio_device(struct virtio_device *dev) int err; dev->dev.bus = &virtio_bus; - sprintf(dev->dev.bus_id, "%u", dev->index); + + /* Assign a unique device index and hence name. */ + dev->index = dev_index++; + sprintf(dev->dev.bus_id, "virtio%u", dev->index); /* We always start by resetting the device, in case a previous * driver messed it up. This also tests that code path a little. */ |