Re: [PATCH] spi: remove return value check of debugfs_create_dir()

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On Mon, Apr 24, 2023 at 03:08:03PM +0200, Greg Kroah-Hartman wrote:
> On Mon, Apr 24, 2023 at 02:00:14PM +0100, Mark Brown wrote:

> > The ones I've seen have been name collisions caused by for example the
> > debugfs structure created being flatter than the device model structure,
> > though obviously something unanticipated could come up.

> Sure name collisions will happen, when people aren't precise about how
> they create their debugfs files (I just had to insist on this type of
> fixups for a USB patch last week.)  But, debugfs failures should never
> stop a driver from working properly, only the debugging functionalities.
> So there's no need to error out from debugfs errors as the only one
> affected is the kernel developer involved, not users.

Developers can be users, and multiple people can work with a single bit
of code.  If these things are being done as a result of looking at the
code and reasonably deciding that actually the error handling wasn't
needed that'd be fine but when it's just silencing a static checker with
no obvious consideration and it's super obviously the right call just
from the diff that's a different thing.

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