linux-kernel - Re: [Outreachy kernel] [PATCH] drm/amdgpu: use DEFINE_DEBUGFS_ATTRIBUTE with debugfs_create_file

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Date:   Sat, 31 Oct 2020 13:01:08 +0100 (CET)
From:   Julia Lawall <julia.lawall@...ia.fr>
To:     Joe Perches <joe@...ches.com>
cc:     Greg KH <gregkh@...uxfoundation.org>,
        Deepak R Varma <mh12gx2825@...il.com>,
        outreachy-kernel@...glegroups.com,
        Alex Deucher <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>, amd-gfx@...ts.freedesktop.org,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        melissa.srw@...il.com, daniel.vetter@...ll.ch
Subject: Re: [Outreachy kernel] [PATCH] drm/amdgpu: use DEFINE_DEBUGFS_ATTRIBUTE
 with debugfs_create_file_unsafe()



On Sat, 31 Oct 2020, Joe Perches wrote:

> On Fri, 2020-10-30 at 09:03 +0100, Greg KH wrote:
> > On Fri, Oct 30, 2020 at 01:27:16PM +0530, Deepak R Varma wrote:
> > > On Fri, Oct 30, 2020 at 08:11:20AM +0100, Greg KH wrote:
> > > > On Fri, Oct 30, 2020 at 08:52:45AM +0530, Deepak R Varma wrote:
> > > > > Using DEFINE_DEBUGFS_ATTRIBUTE macro with debugfs_create_file_unsafe()
> > > > > function in place of the debugfs_create_file() function will make the
> > > > > file operation struct "reset" aware of the file's lifetime. Additional
> > > > > details here: https://lists.archive.carbon60.com/linux/kernel/2369498
> > > > >
> > > > > Issue reported by Coccinelle script:
> > > > > scripts/coccinelle/api/debugfs/debugfs_simple_attr.cocci
> []
> > There is a reason we didn't just do a global search/replace for this in
> > the kernel when the new functions were added, so I don't know why
> > checkpatch is now saying it must be done.
>
> I think it's not a checkpatch warning here.

That is correct, it's a coccinelle script.

julia

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