linux-kernel - [PATCH v2 05/11] virtio: blk: Move out vq initialization to separate function

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Message-Id: <87a20e93e1b81a8d8761dc5f6552a16557d64169.1317311033.git.amit.shah@redhat.com>
Date:	Thu, 29 Sep 2011 21:19:38 +0530
From:	Amit Shah <amit.shah@...hat.com>
To:	Rusty Russell <rusty@...tcorp.com.au>
Cc:	linux-kernel@...r.kernel.org,
	"Michael S. Tsirkin" <mst@...hat.com>,
	Amit Shah <amit.shah@...hat.com>
Subject: [PATCH v2 05/11] virtio: blk: Move out vq initialization to separate function

The probe and PM restore functions will share this code.

Signed-off-by: Amit Shah <amit.shah@...hat.com>
---
 drivers/block/virtio_blk.c |   19 ++++++++++++++-----
 1 files changed, 14 insertions(+), 5 deletions(-)

diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
index 079c088..717664a 100644
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -337,6 +337,18 @@ static void virtblk_config_changed(struct virtio_device *vdev)
 	queue_work(virtblk_wq, &vblk->config_work);
 }
 
+static int init_vq(struct virtio_blk *vblk)
+{
+	int err = 0;
+
+	/* We expect one virtqueue, for output. */
+	vblk->vq = virtio_find_single_vq(vblk->vdev, blk_done, "requests");
+	if (IS_ERR(vblk->vq))
+		err = PTR_ERR(vblk->vq);
+
+	return err;
+}
+
 static int __devinit virtblk_probe(struct virtio_device *vdev)
 {
 	struct virtio_blk *vblk;
@@ -375,12 +387,9 @@ static int __devinit virtblk_probe(struct virtio_device *vdev)
 	sg_init_table(vblk->sg, vblk->sg_elems);
 	INIT_WORK(&vblk->config_work, virtblk_config_changed_work);
 
-	/* We expect one virtqueue, for output. */
-	vblk->vq = virtio_find_single_vq(vdev, blk_done, "requests");
-	if (IS_ERR(vblk->vq)) {
-		err = PTR_ERR(vblk->vq);
+	err = init_vq(vblk);
+	if (err)
 		goto out_free_vblk;
-	}
 
 	vblk->pool = mempool_create_kmalloc_pool(1,sizeof(struct virtblk_req));
 	if (!vblk->pool) {
-- 
1.7.6.2

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