netdev - Re: [PATCH 1/3] vhost: remove the dead branch

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Date:	Mon, 18 Nov 2013 12:16:17 +0200
From:	"Michael S. Tsirkin" <mst@...hat.com>
To:	Zhi Yong Wu <zwu.kernel@...il.com>
Cc:	netdev@...r.kernel.org, rusty@...tcorp.com.au,
	Zhi Yong Wu <wuzhy@...ux.vnet.ibm.com>
Subject: Re: [PATCH 1/3] vhost: remove the dead branch

On Mon, Nov 18, 2013 at 11:19:21AM +0800, Zhi Yong Wu wrote:
> From: Zhi Yong Wu <wuzhy@...ux.vnet.ibm.com>
> 
> Since vhost_dev_init() forever return 0, some branches are never run,
> therefore need to be removed.
> 
> Signed-off-by: Zhi Yong Wu <wuzhy@...ux.vnet.ibm.com>

Acked-by: Michael S. Tsirkin <mst@...hat.com>

> ---
>  drivers/vhost/net.c  |    5 -----
>  drivers/vhost/scsi.c |    5 -----
>  drivers/vhost/test.c |    5 -----
>  3 files changed, 0 insertions(+), 15 deletions(-)
> 
> diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
> index 831eb4f..0554785 100644
> --- a/drivers/vhost/net.c
> +++ b/drivers/vhost/net.c
> @@ -707,11 +707,6 @@ static int vhost_net_open(struct inode *inode, struct file *f)
>  		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_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);
> diff --git a/drivers/vhost/scsi.c b/drivers/vhost/scsi.c
> index e663921..9d5e18d 100644
> --- a/drivers/vhost/scsi.c
> +++ b/drivers/vhost/scsi.c
> @@ -1421,14 +1421,9 @@ static int vhost_scsi_open(struct inode *inode, struct file *f)
>  
>  	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:
> diff --git a/drivers/vhost/test.c b/drivers/vhost/test.c
> index 339eae8..99cb960 100644
> --- a/drivers/vhost/test.c
> +++ b/drivers/vhost/test.c
> @@ -118,11 +118,6 @@ static int vhost_test_open(struct inode *inode, struct file *f)
>  	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;
> -	}
>  
>  	f->private_data = n;
>  
> -- 
> 1.7.6.5
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