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path: root/drivers/virtio/virtio.c
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Diffstat (limited to 'drivers/virtio/virtio.c')
-rw-r--r--drivers/virtio/virtio.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/virtio/virtio.c b/drivers/virtio/virtio.c
index 59918dfc3cb7..0f3c2bb7bf35 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)
{
@@ -166,6 +169,9 @@ int register_virtio_device(struct virtio_device *dev)
int err;
dev->dev.bus = &virtio_bus;
+
+ /* 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