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SubjectRe: [PATCH v2 1/2] pinctrl: use to octal permissions for debugfs files
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On Wed, 2021-02-10 at 12:18 +0200, Andy Shevchenko wrote:
> On Wed, Feb 10, 2021 at 10:30 AM Joe Perches <joe@perches.com> wrote:
> > On Tue, 2021-02-09 at 23:49 -0800, Drew Fustini wrote:
>
> > > - debugfs_create_file("pinctrl-devices", S_IFREG | S_IRUGO,
> > > + debugfs_create_file("pinctrl-devices", 0400,
> > >                           debugfs_root, NULL, &pinctrl_devices_fops);
> >
> > NAK. You've changed the permission levels.
>
> NAK is usually given when the whole idea is broken. Here is not the
> case and you may have helped to amend the patch.

NAK IMO just means the patch should not be applied, not that the
concept is broken.

> ...
>
> > And you have to keep the S_IFREG or'd along with the octal.
>
> Perhaps time to read the code?
> https://elixir.bootlin.com/linux/latest/source/fs/debugfs/inode.c#L387

Then the commit message is also broken.

> > checkpatch does this conversion using this command line:
> >
> > $ ./scripts/checkpatch.pl -f --show-types --terse drivers/pinctrl/*.[ch] --types=SYMBOLIC_PERMS --fix-inplace
>
> NAK! See above.

The command line above is for octal conversion of the symbolic permissions.

Any other conversion would be for a different purpose and that purpose and
should be described in the commit message.


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