[ 3.5.y.z extended stable ] Patch "virtio: console: rename cvq_lock to c_ivq_lock" has been added to staging queue

[Luis Henriques]

This is a note to let you know that I have just added a patch titled

    virtio: console: rename cvq_lock to c_ivq_lock

to the linux-3.5.y-queue branch of the 3.5.y.z extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.5.y-queue

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.5.y.z tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Luis

------

>From 9497f8cc23ce71f912dce9eb68bc704084748060 Mon Sep 17 00:00:00 2001
From: Amit Shah <amit.shah at redhat.com>
Date: Fri, 29 Mar 2013 16:30:07 +0530
Subject: [PATCH] virtio: console: rename cvq_lock to c_ivq_lock

commit 165b1b8bbc17c9469b053bab78b11b7cbce6d161 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 at redhat.com>
Reviewed-by: Asias He <asias at redhat.com>
Reviewed-by: Wanlong Gao <gaowanlong at cn.fujitsu.com>
Signed-off-by: Rusty Russell <rusty at rustcorp.com.au>
[ luis: adjust context ]
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
---
 drivers/char/virtio_console.c | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c
index f77e341..4c76834 100644
--- a/drivers/char/virtio_console.c
+++ b/drivers/char/virtio_console.c
@@ -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;
@@ -1465,23 +1465,23 @@ 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)
@@ -1742,10 +1742,11 @@ 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");
@@ -1886,7 +1887,7 @@ 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];
--
1.8.1.2