linux-kernel - [PATCH v4 next 0/6] IIO: sca3000: devm resource management

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Message-ID: <20260204061219.791037-1-harshit.m.mogalapalli@oracle.com>
Date: Tue,  3 Feb 2026 22:11:55 -0800
From: Harshit Mogalapalli <harshit.m.mogalapalli@...cle.com>
To: Jonathan Cameron <jic23@...nel.org>, David Lechner <dlechner@...libre.com>,
        Nuno Sá <nuno.sa@...log.com>,
        Andy Shevchenko <andy@...nel.org>,
        Harshit Mogalapalli <harshit.m.mogalapalli@...cle.com>,
        Gustavo Bastos <gustavobastos@....br>,
        Antoniu Miclaus <antoniu.miclaus@...log.com>,
        Andrew Ijano <andrew.ijano@...il.com>, linux-iio@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc: kernel-janitors@...r.kernel.org, error27@...il.com,
        andriy.shevchenko@...el.com
Subject: [PATCH v4 next 0/6]  IIO: sca3000: devm resource management

This is an attempt to update sca3000 accelerometer driver to make use
of devm_ based helpers where needed. I have split it into 6 patches.

Patch 1 - some refactoring and simplification of dev.
Patch 2 - switches request_threaded_irq() over to the devm helper
Patch 3 - make stop_all_interrupts() return void
Patch 4 - Make use of guard() in sca3000_stop_all_interrupts() function.
Patch 5 - Used devm_add_action_or_reset() for disabling interrupts.
(Ensured the ordering of teardown bits remain same)
Patch 6 - manage device registration with devm helper

Thanks to David and Jonathan for reviewing v1 and v2.

Yet to be addressed tasks: (Would like to take this up as a separate
activity)
1. We shouldn't be using the spi_device_id at all. [Thanks to onathan
and David]
2. Modernize other functions to make use of autocleanup style locking
which simpifies the code and makes error paths cleaner.

I will be working on these two above tasks and will be sending a
different patches for those.

The series builds cleanly and I have performed static analysis with
smatch checker but haven't tested on actual hardware.

v1 -> v2: changes are documented in patches where necessary.
v2 -> v3: Address comments from David Lechner.
v3 -> v4: Address comments from Andy.

Thanks for your time.

Regards,
Harshit

Harshit Mogalapalli (6):
  iio: sca3000: reuse device pointer for devm helpers
  iio: sca3000: switch IRQ handling to devm helpers
  iio: sca3000: make stop_all_interrupts() return void
  iio: sca3000: use guard(mutex) to simplify return paths
  iio: sca3000: stop interrupts via devm_add_action_or_reset()
  iio: sca3000: manage device registration with devm helper

 drivers/iio/accel/sca3000.c | 88 +++++++++++++++----------------------
 1 file changed, 35 insertions(+), 53 deletions(-)

-- 
2.47.3