From: Andy Shevchenko <andriy.shevchenko@intel.com>
To: Oleksij Rempel <o.rempel@pengutronix.de>
Cc: "Sander Vanheule" <sander@svanheule.net>,
"Jonathan Cameron" <jic23@kernel.org>,
"Rob Herring" <robh@kernel.org>,
"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
"Conor Dooley" <conor+dt@kernel.org>,
kernel@pengutronix.de, linux-kernel@vger.kernel.org,
linux-iio@vger.kernel.org, devicetree@vger.kernel.org,
"Andy Shevchenko" <andy@kernel.org>,
"David Lechner" <dlechner@baylibre.com>,
"Nuno Sá" <nuno.sa@analog.com>,
"David Jander" <david@protonic.nl>
Subject: Re: [PATCH v2 5/8] iio: dac: ds4424: convert to regmap
Date: Tue, 3 Feb 2026 12:13:44 +0200 [thread overview]
Message-ID: <aYHKWGKAuaeYD4xh@smile.fi.intel.com> (raw)
In-Reply-To: <aYHJj5uSnrj2xp4b@smile.fi.intel.com>
On Tue, Feb 03, 2026 at 12:10:29PM +0200, Andy Shevchenko wrote:
> On Sun, Feb 01, 2026 at 05:16:53PM +0100, Oleksij Rempel wrote:
> > On Sun, Feb 01, 2026 at 03:42:28PM +0100, Sander Vanheule wrote:
> > > On Tue, 2026-01-27 at 07:09 +0100, Oleksij Rempel wrote:
...
> > Which works mostly fine except of the cache initialisation. If I use
> > num_reg_defaults_raw with REGCACHE_MAPLE as proposed by Andy
> > Shevchenko, first access to regmap values over debugfs will explode with
> > NULL pointer etc...
>
> Yeah, this is known issue in regcache core. I don't remember how it was worked
> around in pinctrl-cy8c95x0.c.
That said, have you run the v6.19-rcX kernels? It should have some patches
related to the regcache, but I need to test and send the actual fix for that
NULL case.
> > If I remove num_reg_defaults_raw, I need to read register manually
> > to init defaul values as implemented in v3.
--
With Best Regards,
Andy Shevchenko
next prev parent reply other threads:[~2026-02-03 10:13 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-27 6:09 [PATCH v2 0/8] iio: dac: ds4424: add DS4402/DS4404 support and scale Oleksij Rempel
2026-01-27 6:09 ` [PATCH v2 1/8] dt-bindings: iio: dac: maxim,ds4424: add ds4402/ds4404 Oleksij Rempel
2026-01-27 6:09 ` [PATCH v2 2/8] dt-bindings: iio: dac: maxim,ds4424: add maxim,rfs-ohms property Oleksij Rempel
2026-01-27 19:49 ` Conor Dooley
2026-01-27 19:55 ` Conor Dooley
2026-01-28 8:01 ` David Jander
2026-01-28 17:00 ` Conor Dooley
2026-01-27 6:09 ` [PATCH v2 3/8] iio: dac: ds4424: add DS4402/DS4404 device IDs Oleksij Rempel
2026-01-27 10:27 ` Andy Shevchenko
2026-01-27 6:09 ` [PATCH v2 4/8] iio: dac: ds4424: sort headers alphabetically Oleksij Rempel
2026-01-27 10:30 ` Andy Shevchenko
2026-01-27 6:09 ` [PATCH v2 5/8] iio: dac: ds4424: convert to regmap Oleksij Rempel
2026-01-27 10:39 ` Andy Shevchenko
2026-02-01 14:42 ` Sander Vanheule
2026-02-01 16:16 ` Oleksij Rempel
2026-02-01 17:24 ` Sander Vanheule
2026-02-03 10:10 ` Andy Shevchenko
2026-02-03 10:13 ` Andy Shevchenko [this message]
2026-01-27 6:09 ` [PATCH v2 6/8] iio: dac: ds4424: fix -128 rejection and refactor raw access Oleksij Rempel
2026-01-27 10:42 ` Andy Shevchenko
2026-01-27 10:49 ` Oleksij Rempel
2026-01-27 10:51 ` Andy Shevchenko
2026-01-27 6:09 ` [PATCH v2 7/8] iio: dac: ds4424: add Rfs-based scale and per-variant limits Oleksij Rempel
2026-01-27 10:46 ` Andy Shevchenko
2026-01-27 6:09 ` [PATCH v2 8/8] iio: dac: ds4424: ratelimit read errors and use device context Oleksij Rempel
2026-01-27 10:47 ` Andy Shevchenko
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