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From: David Laight <David.Laight@ACULAB.COM>
To: 'Chen-Yu Tsai' <wenst@chromium.org>,
	Mark Brown <broonie@kernel.org>,
	"Liam Girdwood" <lgirdwood@gmail.com>,
	Manivannan Sadhasivam <mani@kernel.org>,
	Cristian Ciocaltea <cristian.ciocaltea@gmail.com>,
	Matti Vaittinen <mazziesaccount@gmail.com>
Cc: "linux-actions@lists.infradead.org" 
	<linux-actions@lists.infradead.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"linux-arm-kernel@lists.infradead.org" 
	<linux-arm-kernel@lists.infradead.org>
Subject: RE: [PATCH] regulator: Use bitfield values for range selectors
Date: Sat, 10 Jun 2023 17:10:19 +0000	[thread overview]
Message-ID: <ce04685b7c4840b683add0bdd4404da6@AcuMS.aculab.com> (raw)
In-Reply-To: <20230608075651.3214540-1-wenst@chromium.org>

From: Chen-Yu Tsai
> Sent: 08 June 2023 08:57
> 
> Right now the regulator helpers expect raw register values for the range
> selectors. This is different from the voltage selectors, which are
> normalized as bitfield values. This leads to a bit of confusion. Also,
> raw values are harder to copy from datasheets or match up with them,
> as datasheets will typically have bitfield values.
> 
> Make the helpers expect bitfield values, and convert existing users.
> Include bitops.h explicitly for ffs(), and reorder the header include
> statements. While at it, also replace module.h with export.h, since the
> only use is EXPORT_SYMBOL_GPL.
> 
...
>  static const unsigned int atc260x_ldo_voltage_range_sel[] = {
> -	0x0, 0x20,
> +	0x0, 0x1,
>  };

Is there any way the change can be done so that un-edited
modules fail to compile?
Otherwise the whole thing is an accident waiting to happen.

	David

-
Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK
Registration No: 1397386 (Wales)


  parent reply	other threads:[~2023-06-10 17:10 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-06-08  7:56 Chen-Yu Tsai
2023-06-08  8:30 ` Matti Vaittinen
2023-06-09 10:45 ` Matti Vaittinen
2023-06-09 10:53   ` Mark Brown
2023-06-09 11:00     ` Matti Vaittinen
2023-06-10 17:10 ` David Laight [this message]
2023-06-12  3:39   ` Chen-Yu Tsai
2023-06-12  7:47     ` David Laight
2023-06-12  9:27       ` Chen-Yu Tsai
2023-06-12 10:13         ` David Laight

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