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From: Link Mauve <linkmauve@linkmauve.fr>
To: Andy Shevchenko <andriy.shevchenko@intel.com>
Cc: "Link Mauve" <linkmauve@linkmauve.fr>,
	"Srinivas Kandagatla" <srini@kernel.org>,
	"Andy Shevchenko" <andy@kernel.org>,
	"Sven Peter" <sven@kernel.org>, "Janne Grunau" <j@jannau.net>,
	"Neal Gompa" <neal@gompa.dev>, "Frank Li" <Frank.Li@nxp.com>,
	"Sascha Hauer" <s.hauer@pengutronix.de>,
	"Pengutronix Kernel Team" <kernel@pengutronix.de>,
	"Fabio Estevam" <festevam@gmail.com>,
	"Vladimir Zapolskiy" <vz@mleia.com>,
	"André Draszik" <andre.draszik@linaro.org>,
	"Neil Armstrong" <neil.armstrong@linaro.org>,
	"Kevin Hilman" <khilman@baylibre.com>,
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	"Martin Blumenstingl" <martin.blumenstingl@googlemail.com>,
	"Orson Zhai" <orsonzhai@gmail.com>,
	"Baolin Wang" <baolin.wang@linux.alibaba.com>,
	"Chunyan Zhang" <zhang.lyra@gmail.com>,
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	"Kalyani Akula" <kalyani.akula@amd.com>,
	"Michal Simek" <michal.simek@amd.com>,
	"Miguel Ojeda" <ojeda@kernel.org>,
	"Boqun Feng" <boqun@kernel.org>, "Gary Guo" <gary@garyguo.net>,
	"Björn Roy Baron" <bjorn3_gh@protonmail.com>,
	"Benno Lossin" <lossin@kernel.org>,
	"Andreas Hindborg" <a.hindborg@kernel.org>,
	"Alice Ryhl" <aliceryhl@google.com>,
	"Trevor Gross" <tmgross@umich.edu>,
	"Danilo Krummrich" <dakr@kernel.org>,
	"Daniel Almeida" <daniel.almeida@collabora.com>,
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	"Alexandre Courbot" <acourbot@nvidia.com>,
	"Onur Özkan" <work@onurozkan.dev>,
	asahi@lists.linux.dev, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, imx@lists.linux.dev,
	linux-amlogic@lists.infradead.org, linux-arm-msm@vger.kernel.org,
	linux-stm32@st-md-mailman.stormreply.com,
	rust-for-linux@vger.kernel.org
Subject: Re: [PATCH v2 0/2] nvmem: fix a const-unsoundness in reg_write
Date: Thu, 16 Jul 2026 13:29:44 +0200	[thread overview]
Message-ID: <aljAqBNVXV1aVJqx@luna> (raw)
In-Reply-To: <alieVR1cOtOySi4_@ashevche-desk.local>

On Thu, Jul 16, 2026 at 12:03:17PM +0300, Andy Shevchenko wrote:
[…]
> ..... TL;DR: you should fix the Apple driver (and might more if any of them
> use that dirty trick).

It was the only one of the drivers/nvmem/ to do that.  Three other
drivers use a pattern where they merge read and write operations into a
single access function with a type=read/write parameter, so const safety
can’t work there and I’ll continue casting from const void * to void *
in the write function to keep that pattern working.

> 
> -- 
> With Best Regards,
> Andy Shevchenko
> 
> 

-- 
Link Mauve


      parent reply	other threads:[~2026-07-16 11:30 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-07-15 19:55 [PATCH v2 0/2] nvmem: fix a const-unsoundness in reg_write Link Mauve
2026-07-15 19:55 ` [PATCH v2 1/2] nvmem: core: deprecate reg_write callback and add reg_write_const Link Mauve
2026-07-15 19:55 ` [PATCH v2 2/2] nvmem: make all reg_write callbacks take const void * Link Mauve
2026-07-16  9:03 ` [PATCH v2 0/2] nvmem: fix a const-unsoundness in reg_write Andy Shevchenko
2026-07-16 11:07   ` Link Mauve
2026-07-16 11:29   ` Link Mauve [this message]

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