[PATCH] spi: microchip-core: fix passing zero to PTR_ERR warning

[Conor.Dooley at microchip.com]

On 15/06/2022 12:40, Mark Brown wrote:
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> On Wed, Jun 15, 2022 at 12:30:22PM +0100, Conor Dooley wrote:
> 
>> -             ret = PTR_ERR(spi->clk);
>> +             ret = !spi->clk ? -ENXIO : PTR_ERR(spi->clk);
> 
> I think you're looking for PTR_ERR_OR_ZERO() here?

Maybe I don't understand, so let me explain what I think you're
suggesting & maybe you can correct me:
> -             ret = PTR_ERR(spi->clk);
> +             ret = PTR_ERR_OR_ZERO(spi->clk);

But if spi->clk is NULL, this will return 0 from the probe
rather than returning an error?
If that's not what you meant, lmk
Thanks,
Conor.

> 
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