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virtio: console: rename cvq_lock to c_ivq_lock

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commit 165b1b8bbc upstream.

The cvq_lock was taken for the c_ivq.  Rename the lock to make that
obvious.

We'll also add a lock around the c_ovq in the next commit, so there's no
ambiguity.

Signed-off-by: Amit Shah <amit.shah@redhat.com>
Reviewed-by: Asias He <asias@redhat.com>
Reviewed-by: Wanlong Gao <gaowanlong@cn.fujitsu.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
[bwh: Backported to 3.2:
 - Adjust context
 - Drop change to virtcons_restore()]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
[wyj: Backported to 3.4:
 - pick change to virtcons_restore() from upsteam patch]
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Amit Shah 2013-03-29 16:30:07 +05:30 committed by Greg Kroah-Hartman
parent 6c9f8a4940
commit e83f2e8240
1 changed files with 9 additions and 8 deletions
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17
drivers/char/virtio_console.c
View file

@ -131,7 +131,7 @@ struct ports_device {
spinlock_t ports_lock;
/* To protect the vq operations for the control channel */
spinlock_t cvq_lock;
spinlock_t c_ivq_lock;
/* The current config space is stored here */
struct virtio_console_config config;
@ -1474,23 +1474,23 @@ static void control_work_handler(struct work_struct *work)
portdev = container_of(work, struct ports_device, control_work);
vq = portdev->c_ivq;
spin_lock(&portdev->cvq_lock);
spin_lock(&portdev->c_ivq_lock);
while ((buf = virtqueue_get_buf(vq, &len))) {
spin_unlock(&portdev->cvq_lock);
spin_unlock(&portdev->c_ivq_lock);
buf->len = len;
buf->offset = 0;
handle_control_message(portdev, buf);
spin_lock(&portdev->cvq_lock);
spin_lock(&portdev->c_ivq_lock);
if (add_inbuf(portdev->c_ivq, buf) < 0) {
dev_warn(&portdev->vdev->dev,
"Error adding buffer to queue\n");
free_buf(buf);
}
}
spin_unlock(&portdev->cvq_lock);
spin_unlock(&portdev->c_ivq_lock);
}
static void out_intr(struct virtqueue *vq)
@ -1751,10 +1751,11 @@ static int __devinit virtcons_probe(struct virtio_device *vdev)
if (multiport) {
unsigned int nr_added_bufs;
spin_lock_init(&portdev->cvq_lock);
spin_lock_init(&portdev->c_ivq_lock);
INIT_WORK(&portdev->control_work, &control_work_handler);
nr_added_bufs = fill_queue(portdev->c_ivq, &portdev->cvq_lock);
nr_added_bufs = fill_queue(portdev->c_ivq,
&portdev->c_ivq_lock);
if (!nr_added_bufs) {
dev_err(&vdev->dev,
"Error allocating buffers for control queue\n");
@ -1895,7 +1896,7 @@ static int virtcons_restore(struct virtio_device *vdev)
return ret;
if (use_multiport(portdev))
fill_queue(portdev->c_ivq, &portdev->cvq_lock);
fill_queue(portdev->c_ivq, &portdev->c_ivq_lock);
list_for_each_entry(port, &portdev->ports, list) {
port->in_vq = portdev->in_vqs[port->id];