Re: [PATCH] loop: fix passing zero to 'PTR_ERR' warning

[Al Viro]

On Wed, Jun 24, 2020 at 04:48:42PM +0800, Ding Xiang wrote:
> Fix a static code checker warning:
>     drivers/block/loop.c:798 loop_attr_backing_file_show()
>     warn: passing zero to 'PTR_ERR'

Better fix the root cause of that the problem - bullshit checker,
that is...