virtio_console: Use virtio device index to generate port name
Use virtio device index for creating unique device port names.
Current index allocation in virtio is based on a monotonically
increasing variable "index". A better handling of this is to
use device index which is allocated by ida.
Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c
index 95cae77..2cfd5a0 100644
--- a/drivers/char/virtio_console.c
+++ b/drivers/char/virtio_console.c
@@ -61,9 +61,6 @@
/* List of all the devices we're handling */
struct list_head portdevs;
- /* Number of devices this driver is handling */
- unsigned int index;
-
/*
* This is used to keep track of the number of hvc consoles
* spawned by this driver. This number is given as the first
@@ -169,9 +166,6 @@
/* Array of per-port IO virtqueues */
struct virtqueue **in_vqs, **out_vqs;
- /* Used for numbering devices for sysfs and debugfs */
- unsigned int drv_index;
-
/* Major number for this device. Ports will be created as minors. */
int chr_major;
};
@@ -1415,7 +1409,7 @@
}
port->dev = device_create(pdrvdata.class, &port->portdev->vdev->dev,
devt, port, "vport%up%u",
- port->portdev->drv_index, id);
+ port->portdev->vdev->index, id);
if (IS_ERR(port->dev)) {
err = PTR_ERR(port->dev);
dev_err(&port->portdev->vdev->dev,
@@ -1470,7 +1464,7 @@
* inspect a port's state at any time
*/
sprintf(debugfs_name, "vport%up%u",
- port->portdev->drv_index, id);
+ port->portdev->vdev->index, id);
port->debugfs_file = debugfs_create_file(debugfs_name, 0444,
pdrvdata.debugfs_dir,
port,
@@ -1961,16 +1955,12 @@
portdev->vdev = vdev;
vdev->priv = portdev;
- spin_lock_irq(&pdrvdata_lock);
- portdev->drv_index = pdrvdata.index++;
- spin_unlock_irq(&pdrvdata_lock);
-
portdev->chr_major = register_chrdev(0, "virtio-portsdev",
&portdev_fops);
if (portdev->chr_major < 0) {
dev_err(&vdev->dev,
"Error %d registering chrdev for device %u\n",
- portdev->chr_major, portdev->drv_index);
+ portdev->chr_major, vdev->index);
err = portdev->chr_major;
goto free;
}