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From: Andy Shevchenko <andriy.shevchenko@intel.com>
To: Louis Adamian <adamianlouis@gmail.com>
Cc: "Jonathan Cameron" <jic23@kernel.org>,
	"Rob Herring" <robh@kernel.org>,
	"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
	"Conor Dooley" <conor+dt@kernel.org>,
	"David Lechner" <dlechner@baylibre.com>,
	"Nuno Sá" <nuno.sa@analog.com>,
	"Andy Shevchenko" <andy@kernel.org>,
	linux-iio@vger.kernel.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 2/2] iio: pressure: ms5637: Add variant specific temperature compensation
Date: Thu, 11 Jun 2026 22:32:02 +0300	[thread overview]
Message-ID: <aisNMmwMREF7Iga6@ashevche-desk.local> (raw)
In-Reply-To: <20260611151026.4abf8804@louisarchdesktop>

On Thu, Jun 11, 2026 at 03:10:26PM -0400, Louis Adamian wrote:
> On Wed, 10 Jun 2026 21:37:58 +0300
> Andy Shevchenko <andriy.shevchenko@intel.com> wrote:
> > On Tue, Jun 09, 2026 at 10:04:58PM -0400, Louis Adamian wrote:

...

> > >  struct ms_tp_dev {
> > >  	struct i2c_client *client;  
> > 
> > >  	const struct ms_tp_hw_data *hw;
> > >  	u16 prom[MS_SENSORS_TP_PROM_WORDS_NB];
> > >  	u8 res_index;
> > > +	const struct ms_tp_comp_consts *comp_consts;  
> > 
> > Please, check with `pahole` if this is the best layout.
> 
> I will correct the packing on this per pahole's finding.
> > >  struct ms_tp_data {
> > >  	const char *name;
> > >  	const struct ms_tp_hw_data *hw;
> > > +	const struct ms_tp_comp_consts *comp_consts;
> > >  };  
> > 
> > Can this be simply embedded into ms_tp_dev (and copied there if
> > required)?
> 
> Copying in ms_tp_comp_consts provides no benefit over
> referencing the pointer; the values are per-descriptor, not
> per-instance and never modified. I'll keep the pointer (same as
> ms_tp_hw_data).

Okay, let me ask differently then: Can we use the same data type in ms_tp_dev
instead of adding basically the same fields as in ms_tp_data?

-- 
With Best Regards,
Andy Shevchenko



      reply	other threads:[~2026-06-11 19:32 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-06-10  2:04 [PATCH v2 0/2] iio: pressure: ms5637: Add variant specific Louis Adamian
2026-06-10  2:04 ` [PATCH v2 1/2] dt-bindings: iio: pressure: Add MS5637 Louis Adamian
2026-06-10 16:45   ` Conor Dooley
2026-06-11 14:48     ` Louis Adamian
2026-06-10  2:04 ` [PATCH v2 2/2] iio: pressure: ms5637: Add variant specific temperature compensation Louis Adamian
2026-06-10 18:37   ` Andy Shevchenko
2026-06-11 16:50     ` Jonathan Cameron
2026-06-11 19:10     ` Louis Adamian
2026-06-11 19:32       ` Andy Shevchenko [this message]

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