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Diffstat (limited to 'drivers/virtio/virtio.c')
-rw-r--r--drivers/virtio/virtio.c8
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. */
6static unsigned int dev_index;
7
5static ssize_t device_show(struct device *_d, 8static 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. */