linux-kernel - Re: [PATCH] iio: dac: ad5791: fix storage

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Message-ID: <20250125121941.1270e382@jic23-huawei>
Date: Sat, 25 Jan 2025 12:19:41 +0000
From: Jonathan Cameron <jic23@...nel.org>
To: Nuno Sá <noname.nuno@...il.com>
Cc: David Lechner <dlechner@...libre.com>, Michael Hennerich 
 <Michael.Hennerich@...log.com>, linux-iio@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH] iio: dac: ad5791: fix storage

On Fri, 24 Jan 2025 12:48:21 +0000
Nuno Sá <noname.nuno@...il.com> wrote:

> On Wed, 2025-01-22 at 17:16 -0600, David Lechner wrote:
> > IIO uses "natural" alignment so storagebits should always be a power of
> > 2. Change storagebits to 32 since that is the natural size to store 24
> > bits of data.
> > 
> > The ad5791 driver currently doesn't use this field anywhere and doesn't
> > support buffered writes, so this does not change anything. We just don't
> > want anyone to think that it is OK to have storagebits = 24 in other
> > drivers.
> > 
> > Signed-off-by: David Lechner <dlechner@...libre.com>
> > ---  
> 
> Reviewed-by: Nuno Sá <nuno.sa@...log.com>
Applied to the testing branch of iio.git.

Thanks,
Jonathan
> 
> > Since this is purely cosmetic, I didn't bother with a fixes flag.
> > ---
> >  drivers/iio/dac/ad5791.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/drivers/iio/dac/ad5791.c b/drivers/iio/dac/ad5791.c
> > index
> > 57374f78f6b885e1d4f2fb452ac0563b85fc222e..034228a7c059f136cdecfb4683228d0be4c3
> > 7477 100644
> > --- a/drivers/iio/dac/ad5791.c
> > +++ b/drivers/iio/dac/ad5791.c
> > @@ -294,7 +294,7 @@ static const struct ad5791_chip_info _name##_chip_info =
> > {		\
> >  			.scan_type = {					\
> >  				.sign = 'u',				\
> >  				.realbits = (bits),			\
> > -				.storagebits = 24,			\
> > +				.storagebits = 32,			\
> >  				.shift = (_shift),			\
> >  			},						\
> >  			.ext_info = ad5791_ext_info,			\
> > 
> > ---
> > base-commit: 012b8276f08a67b9f2e2fd0f35363ae4a75e5267
> > change-id: 20250122-iio-dac-ad5791-fix-storagebits-9f86efa07abb
> > 
> > Best regards,  
>