Re: [RFC PATCH 1/3] gpio: pca953x: Replace chip type flags with a type enum

[Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>]

On Mon, Jan 30, 2023 at 11:57:11PM +0200, Andy Shevchenko wrote:
> On Mon, Jan 30, 2023 at 09:59:42PM +0100, Levente Révész wrote:

...

> static_assert((PCA_TYPE_MASK + 1) >= (TYPE_MAX << 8));

Actually better

static_assert(PCA_TYPE_MASK >= ((TYPE_MAX - 1) << 8));

to prevent potential overflow if we move this field to the end of the type.

-- 
With Best Regards,
Andy Shevchenko