diff options
Diffstat (limited to 'drivers/virtio/virtio.c')
-rw-r--r-- | drivers/virtio/virtio.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/virtio/virtio.c b/drivers/virtio/virtio.c index 13866789b356..0f3c2bb7bf35 100644 --- a/drivers/virtio/virtio.c +++ b/drivers/virtio/virtio.c | |||
@@ -2,6 +2,9 @@ | |||
2 | #include <linux/spinlock.h> | 2 | #include <linux/spinlock.h> |
3 | #include <linux/virtio_config.h> | 3 | #include <linux/virtio_config.h> |
4 | 4 | ||
5 | /* Unique numbering for virtio devices. */ | ||
6 | static unsigned int dev_index; | ||
7 | |||
5 | static ssize_t device_show(struct device *_d, | 8 | static ssize_t device_show(struct device *_d, |
6 | struct device_attribute *attr, char *buf) | 9 | struct device_attribute *attr, char *buf) |
7 | { | 10 | { |
@@ -166,7 +169,10 @@ int register_virtio_device(struct virtio_device *dev) | |||
166 | int err; | 169 | int err; |
167 | 170 | ||
168 | dev->dev.bus = &virtio_bus; | 171 | dev->dev.bus = &virtio_bus; |
169 | sprintf(dev->dev.bus_id, "%u", dev->index); | 172 | |
173 | /* Assign a unique device index and hence name. */ | ||
174 | dev->index = dev_index++; | ||
175 | sprintf(dev->dev.bus_id, "virtio%u", dev->index); | ||
170 | 176 | ||
171 | /* We always start by resetting the device, in case a previous | 177 | /* We always start by resetting the device, in case a previous |
172 | * driver messed it up. This also tests that code path a little. */ | 178 | * driver messed it up. This also tests that code path a little. */ |