From: Marcelo Schmitt <marcelo.schmitt1@gmail.com>
To: David Lechner <dlechner@baylibre.com>
Cc: Marcelo Schmitt <marcelo.schmitt@analog.com>,
apw@canonical.com, joe@perches.com, dwaipayanray1@gmail.com,
lukas.bulwahn@gmail.com, paul.cercueil@analog.com,
Michael.Hennerich@analog.com, lars@metafoo.de, jic23@kernel.org,
robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org,
conor+dt@kernel.org, dan.carpenter@linaro.org,
linux-iio@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 00/13] Add support for AD7091R-2/-4/-8
Date: Fri, 8 Dec 2023 10:50:15 -0300 [thread overview]
Message-ID: <ZXMfFxEckIm_cFPJ@debian-BULLSEYE-live-builder-AMD64> (raw)
In-Reply-To: <CAMknhBFPbAqp4-AQdmbp+VRW-Ksk1PxaLCG+3n=Zk4gyStqhgw@mail.gmail.com>
On 12/07, David Lechner wrote:
> On Thu, Dec 7, 2023 at 12:36 PM Marcelo Schmitt
> <marcelo.schmitt@analog.com> wrote:
> >
> > From: Marcelo Schmitt <marcelo.schmitt1@gmail.com>
> >
[...]
> >
> > I see regmap's interface for reading device registers under /sys/kernel/debug/regmap/.
> > I can read all registers but can't write to any of them unless I force define
> > REGMAP_ALLOW_WRITE_DEBUGFS.
> >
> > When testing events for this driver I often write to device registers
> > to set different rising/falling thresholds. I do something like this:
> > # echo 0x17 0x100 > /sys/kernel/debug/iio/iio:device0/direct_reg_access
> >
> > I tried read/writing to files under iio:device events directory but always
> > get segmentation fault. I must be forgetting to implement something.
> > What am I missing?
> >
>
> It looks like event callbacks (.read_event_value and friends) are
> missing from `static const struct iio_info ad7091r_info = { ... }`.
> These callbacks aren't checked for NULL, e.g. in iio_ev_value_show(),
> so that is likely where the segfault is happening.
Hi David, thank you for pointing that out.
Will implement those calls in v4.
prev parent reply other threads:[~2023-12-08 13:50 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-07 18:35 [PATCH v3 00/13] Add support for AD7091R-2/-4/-8 Marcelo Schmitt
2023-12-07 18:37 ` [PATCH v3 01/13] scripts: checkpatch: Add __aligned to the list of attribute notes Marcelo Schmitt
2023-12-07 18:56 ` Joe Perches
2023-12-08 12:21 ` Marcelo Schmitt
2023-12-07 18:37 ` [PATCH v3 02/13] iio: adc: ad7091r: Populate device driver data field Marcelo Schmitt
2023-12-07 23:18 ` David Lechner
2023-12-08 12:16 ` Marcelo Schmitt
2023-12-07 18:38 ` [PATCH v3 03/13] iio: adc: ad7091r: Set alert bit in config register Marcelo Schmitt
2023-12-10 12:13 ` Jonathan Cameron
2023-12-07 18:39 ` [PATCH v3 04/13] iio: adc: ad7091r: Align arguments to function call parenthesis Marcelo Schmitt
2023-12-07 18:40 ` [PATCH v3 05/13] iio: adc: ad7091r: Move generic AD7091R code to base driver and header file Marcelo Schmitt
2023-12-07 18:40 ` [PATCH v3 06/13] iio: adc: ad7091r: Move chip init data to container struct Marcelo Schmitt
2023-12-08 12:28 ` [PATCH v3 6/13] " kernel test robot
2023-12-07 18:41 ` [PATCH v3 07/13] iio: adc: ad7091r: Set device mode through chip_info callback Marcelo Schmitt
2023-12-10 12:35 ` Jonathan Cameron
2023-12-07 18:41 ` [PATCH v3 08/13] iio: adc: ad7091r: Enable internal vref if external vref is not supplied Marcelo Schmitt
2023-12-10 12:22 ` Jonathan Cameron
2023-12-07 18:41 ` [PATCH v3 09/13] iio: adc: ad7091r: Add chip_info callback to get conversion result channel Marcelo Schmitt
2023-12-07 18:42 ` [PATCH v3 10/13] dt-bindings: iio: Add AD7091R-8 Marcelo Schmitt
2023-12-07 23:56 ` David Lechner
2023-12-08 13:28 ` Marcelo Schmitt
2023-12-08 14:50 ` David Lechner
2023-12-10 12:26 ` Jonathan Cameron
2023-12-08 8:05 ` Krzysztof Kozlowski
2023-12-08 13:29 ` Marcelo Schmitt
2023-12-07 18:42 ` [PATCH v3 11/13] iio: adc: Split AD7091R-5 config symbol Marcelo Schmitt
2023-12-07 18:42 ` [PATCH v3 12/13] iio: adc: Add support for AD7091R-8 Marcelo Schmitt
2023-12-10 12:33 ` Jonathan Cameron
2023-12-10 19:54 ` Marcelo Schmitt
2023-12-07 18:43 ` [PATCH v3 13/13] MAINTAINERS: Add MAINTAINERS entry for AD7091R Marcelo Schmitt
2023-12-07 18:58 ` Joe Perches
2023-12-08 12:12 ` Marcelo Schmitt
2023-12-07 23:26 ` [PATCH v3 00/13] Add support for AD7091R-2/-4/-8 David Lechner
2023-12-08 13:50 ` Marcelo Schmitt [this message]
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