Re: [Xen-devel] [PATCH][next] xen/gntdev: remove redundant non-zero check on ret

[Jürgen Groß <jgross@xxxxxxxx>]

On 11.11.19 13:20, Colin King wrote:
> From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
>
> The non-zero check on ret is always going to be false because
> ret was initialized as zero and the only place it is set to
> non-zero contains a return path before the non-zero check. Hence
> the check is redundant and can be removed.
Which version did you patch against? In current master the above
statement is not true.


Juergen

> Addresses-Coverity: ("Logically dead code")
> Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
> ---
>   drivers/xen/gntdev.c | 5 -----
>   1 file changed, 5 deletions(-)
>
> diff --git a/drivers/xen/gntdev.c b/drivers/xen/gntdev.c
> index 10cc5e9e612a..07d80b176118 100644
> --- a/drivers/xen/gntdev.c
> +++ b/drivers/xen/gntdev.c
> @@ -524,11 +524,6 @@ static int gntdev_open(struct inode *inode, struct file 
> *flip)
>         }
>   #endif
>   
> -	if (ret) {
> -               kfree(priv);
> -               return ret;
> -       }
> -
>         flip->private_data = priv;
>   #ifdef CONFIG_XEN_GRANT_DMA_ALLOC
>         priv->dma_dev = gntdev_miscdev.this_device;

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