Re: [PATCH v2 1/3] pinctrl: cherryview: Don't use pin/offset 0 to mark an interrupt line as unused

Andy Shevchenko
2021-11-18T11:28:45Z

On Thu, Nov 18, 2021 at 11:56:48AM +0100, Hans de Goede wrote:
> Offset/pin 0 is a perfectly valid offset, so stop using it to have
> the special meaning of interrupt line not used in the intr_lines.
>
> Instead introduce a new special INTR_LINE_UNUSED value which is never
> a valid offset and use that to indicate unused interrupt lines.

...

> +#define INTR_LINE_UNUSED U32_MAX

Funny, I have had something similar in my local branch for a few years ;-)

+#define CHV_INVALID_HWIRQ ((unsigned int)INVALID_HWIRQ)