linux-kernel - [PATCH v3 0/2] iio: fix bug with triggers not resuming after sleep

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Message-ID: <20240807185619.7261-1-benato.denis96@gmail.com>
Date: Wed,  7 Aug 2024 20:56:17 +0200
From: Denis Benato <benato.denis96@...il.com>
To: Jonathan Cameron <jic23@...nel.org>
Cc: Lars-Peter Clausen <lars@...afoo.de>,
	Jagath Jog J <jagathjog1996@...il.com>,
	linux-iio@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Denis Benato <benato.denis96@...il.com>,
	"Luke D . Jones" <luke@...nes.dev>,
	Jonathan LoBue <jlobue10@...il.com>
Subject: [PATCH v3 0/2] iio: fix bug with triggers not resuming after sleep

When a device enters an idle state (for example ASUS RC71L with s2idle)
and an iio driver has a trigger attached such as iio-trig-hrtimer,
after resuming the device the trigger is not triggering data acquisition.

This patch series solves the problem reliably and is well tested after
many cycles and many reboots.

Closes: https://lore.kernel.org/all/31d7f7aa-e834-4fd0-a66a-e0ff528425dc@gmail.com/

Changelog:
- V2: patch 2:
        + Simplify code
        + Remove unneeded code protections around SET_RUNTIME_PM_OPS()
        + pm_ptr() to let the compiler drop bmi323_core_pm_ops if !CONFIG_PM

- V3: patch 1:
	+ Add pf->irq=0 that was accidentally left out

Previous patches obsoleted:
https://lore.kernel.org/all/20240727123034.5541-1-benato.denis96@gmail.com/
https://lore.kernel.org/all/20240725002641.191509-3-benato.denis96@gmail.com/

Denis Benato (2):
  iio: trigger: allow devices to suspend/resume theirs associated
    trigger
  iio: bmi323: suspend and resume triggering on relevant pm operations

 drivers/iio/imu/bmi323/bmi323.h      |  1 +
 drivers/iio/imu/bmi323/bmi323_core.c | 23 +++++++++++++++++++++++
 drivers/iio/imu/bmi323/bmi323_i2c.c  |  1 +
 drivers/iio/imu/bmi323/bmi323_spi.c  |  1 +
 drivers/iio/industrialio-trigger.c   | 27 +++++++++++++++++++++++++++
 include/linux/iio/iio.h              | 17 +++++++++++++++++
 6 files changed, 70 insertions(+)

-- 
2.46.0