From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Mark Brown <broonie@kernel.org>
Cc: Christian Eggers <ceggers@arri.de>,
Javier Carrasco <javier.carrasco.cruz@gmail.com>,
Krystian Garbaciak <krystian.garbaciak@diasemi.com>,
linux-kernel@vger.kernel.org
Subject: Re: regmap: Modeling a shared page selection register
Date: Mon, 27 Oct 2025 16:30:38 +0200 [thread overview]
Message-ID: <aP-CDpbvgPpP3H8l@smile.fi.intel.com> (raw)
In-Reply-To: <7560d98c-84f3-4405-aa1e-0da79eb47866@sirena.org.uk>
On Mon, Oct 27, 2025 at 01:15:36PM +0000, Mark Brown wrote:
> On Mon, Oct 27, 2025 at 10:45:48AM +0200, Andy Shevchenko wrote:
>
> > Right, the logic behind paging implementation in regmap is a bit tricky
> > (and has some known non-critical bugs, FWIW). There is no documentation
> > and it appears that most of the drivers using it, do it wrongly.
>
> Which bugs are you referring to here?
For example one I tried to fix that makes the value pf the selector register in
virtual address space not synchronised with the page number.
--
With Best Regards,
Andy Shevchenko
prev parent reply other threads:[~2025-10-27 14:30 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-25 16:22 regmap: Modeling a shared page selection register Christian Eggers
2025-10-27 8:45 ` Andy Shevchenko
2025-10-27 9:38 ` Christian Eggers
2025-10-27 13:15 ` Mark Brown
2025-10-27 14:30 ` Andy Shevchenko [this message]
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