[PATCH -next] spi: at91-usart: Use PTR_ERR_OR_ZERO() to simplify code

[Mark Brown]

On Tue, Aug 22, 2023 at 04:45:55PM +0200, Alexandre Belloni wrote:
> On 22/08/2023 15:15:13+0100, Mark Brown wrote:

> > I tend to go on the basis that for this sort of thing that's recognised
> > by pattern matching other people will end up sending versions of it no
> > matter what.

> And I'd love for people to explicitly write this has been automatically
> generated in their commit log so we know that probably no though has
> been given to the patch.

Well, a bunch of them are going to be manually written by someone based
on fixing warnings that some checker is generating rather than actually
automatically generated.
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