Messages in this thread | | | From | Andy Shevchenko <> | Date | Mon, 29 May 2023 21:17:27 +0300 | Subject | Re: [PATCH v3 1/2] gpio: tps65219: add GPIO support for TPS65219 PMIC |
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On Mon, May 29, 2023 at 6:21 PM jerome Neanne <jneanne@baylibre.com> wrote: > On 26/05/2023 20:15, andy.shevchenko@gmail.com wrote:
...
> > Missing bits.h > > > > Thanks for your review.Just to be sure on this particular point: > Your recommendation here it to include explicitly bits.h. > > I can see BIT_MASK(n) defined in linux/bits.h > BIT(n) is defined in vdso/bits.h > From what I can see, BIT(n) is broadly used across kernel but > BIT_MASK(n) sounds to be the Linux strict way... > > In current version I'm using BIT(n) macro not BIT_MASK(n). > Do you recommend to replace every BIT(n) currently used with BIT_MASK(n)?
The semantics (if you look into implementations of those two) are different.
BIT() is for a single word (your case), while BIT_MASK() is for an array of words.
* word in case of Linux kernel means element of unsigned long type.
> Sorry for asking dumb questions. Just trying to make sure I > correctly/fully understand your feedback... And do it all right for the > next iteration.
No problem.
-- With Best Regards, Andy Shevchenko
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