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vhost: remove the dead branch 

Since vhost_dev_init() forever return 0, some branches are never run,
therefore need to be removed.

Signed-off-by: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.1
Zhi Yong Wu 2013-12-07 04:13:03 +08:00 committed by David S. Miller
parent 941c22532f
commit 59566b6e8c
5 changed files with 6 additions and 24 deletions
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9
drivers/vhost/net.c
View File

@ -683,7 +683,7 @@ static int vhost_net_open(struct inode *inode, struct file *f)
struct vhost_net *n = kmalloc(sizeof *n, GFP_KERNEL);
struct vhost_dev *dev;
struct vhost_virtqueue **vqs;
int r, i;
int i;
if (!n)
return -ENOMEM;
@ -706,12 +706,7 @@ static int vhost_net_open(struct inode *inode, struct file *f)
n->vqs[i].vhost_hlen = 0;
n->vqs[i].sock_hlen = 0;
}
r = vhost_dev_init(dev, vqs, VHOST_NET_VQ_MAX);
if (r < 0) {
kfree(n);
kfree(vqs);
return r;
}
vhost_dev_init(dev, vqs, VHOST_NET_VQ_MAX);
vhost_poll_init(n->poll + VHOST_NET_VQ_TX, handle_tx_net, POLLOUT, dev);
vhost_poll_init(n->poll + VHOST_NET_VQ_RX, handle_rx_net, POLLIN, dev);

7
drivers/vhost/scsi.c
View File

@ -1417,18 +1417,13 @@ static int vhost_scsi_open(struct inode *inode, struct file *f)
vqs[i] = &vs->vqs[i].vq;
vs->vqs[i].vq.handle_kick = vhost_scsi_handle_kick;
}
r = vhost_dev_init(&vs->dev, vqs, VHOST_SCSI_MAX_VQ);
vhost_dev_init(&vs->dev, vqs, VHOST_SCSI_MAX_VQ);
tcm_vhost_init_inflight(vs, NULL);
if (r < 0)
goto err_init;
f->private_data = vs;
return 0;
err_init:
kfree(vqs);
err_vqs:
vhost_scsi_free(vs);
err_vs:

8
drivers/vhost/test.c
View File

@ -104,7 +104,6 @@ static int vhost_test_open(struct inode *inode, struct file *f)
struct vhost_test *n = kmalloc(sizeof *n, GFP_KERNEL);
struct vhost_dev *dev;
struct vhost_virtqueue **vqs;
int r;
if (!n)
return -ENOMEM;
@ -117,12 +116,7 @@ static int vhost_test_open(struct inode *inode, struct file *f)
dev = &n->dev;
vqs[VHOST_TEST_VQ] = &n->vqs[VHOST_TEST_VQ];
n->vqs[VHOST_TEST_VQ].handle_kick = handle_vq_kick;
r = vhost_dev_init(dev, vqs, VHOST_TEST_VQ_MAX);
if (r < 0) {
kfree(vqs);
kfree(n);
return r;
}
vhost_dev_init(dev, vqs, VHOST_TEST_VQ_MAX);
f->private_data = n;

4
drivers/vhost/vhost.c
View File

@ -290,7 +290,7 @@ static void vhost_dev_free_iovecs(struct vhost_dev *dev)
vhost_vq_free_iovecs(dev->vqs[i]);
}
long vhost_dev_init(struct vhost_dev *dev,
void vhost_dev_init(struct vhost_dev *dev,
struct vhost_virtqueue **vqs, int nvqs)
{
struct vhost_virtqueue *vq;
@ -319,8 +319,6 @@ long vhost_dev_init(struct vhost_dev *dev,
vhost_poll_init(&vq->poll, vq->handle_kick,
POLLIN, dev);
}
return 0;
}
EXPORT_SYMBOL_GPL(vhost_dev_init);

2
drivers/vhost/vhost.h
View File

@ -127,7 +127,7 @@ struct vhost_dev {
struct task_struct *worker;
};
long vhost_dev_init(struct vhost_dev *, struct vhost_virtqueue **vqs, int nvqs);
void vhost_dev_init(struct vhost_dev *, struct vhost_virtqueue **vqs, int nvqs);
long vhost_dev_set_owner(struct vhost_dev *dev);
bool vhost_dev_has_owner(struct vhost_dev *dev);
long vhost_dev_check_owner(struct vhost_dev *);