Re: [PATCH v2 20/25] tty: serial: samsung_tty: Use devm_ioremap_resource

[Krzysztof Kozlowski]

On Mon, Feb 15, 2021 at 09:17:08PM +0900, Hector Martin wrote:
> This picks up the non-posted I/O mode needed for Apple platforms to
> work properly.
> 
> This removes the request/release functions, which are no longer
> necessary, since devm_ioremap_resource takes care of that already. Most
> other drivers already do it this way, anyway.
> 
> Also fix a bug checking the return value, which should use IS_ERR().

No, no, no. We never, never combine fixing bugs with some rework.
However devm_ioremap() returns NULL so where is the error?

Did you test your patches on existing platforms? If not, please mark all
of them as RFT on next submission, so Greg does not pick them too fast.

Best regards,
Krzysztof