linux-dev/drivers/iio/health, branch master

i2c: Make remove callback return void

2022-08-16T10:46:26Z

The value returned by an i2c driver's remove function is mostly ignored. (Only an error message is printed if the value is non-zero that the error is ignored.) So change the prototype of the remove function to return no value. This way driver authors are not tempted to assume that passing an error to the upper layer is a good idea. All drivers are adapted accordingly. There is no intended change of behaviour, all callbacks were prepared to return 0 before. Reviewed-by: Peter Senna Tschudin Reviewed-by: Jeremy Kerr Reviewed-by: Benjamin Mugnier Reviewed-by: Javier Martinez Canillas Reviewed-by: Crt Mori Reviewed-by: Heikki Krogerus Acked-by: Greg Kroah-Hartman Acked-by: Marek Behún # for leds-turris-omnia Acked-by: Andy Shevchenko Reviewed-by: Petr Machata # for mlxsw Reviewed-by: Maximilian Luz # for surface3_power Acked-by: Srinivas Pandruvada # for bmc150-accel-i2c + kxcjk-1013 Reviewed-by: Hans Verkuil # for media/* + staging/media/* Acked-by: Miguel Ojeda # for auxdisplay/ht16k33 + auxdisplay/lcd2s Reviewed-by: Luca Ceresoli # for versaclock5 Reviewed-by: Ajay Gupta # for ucsi_ccg Acked-by: Jonathan Cameron # for iio Acked-by: Peter Rosin # for i2c-mux-*, max9860 Acked-by: Adrien Grassein # for lontium-lt8912b Reviewed-by: Jean Delvare # for hwmon, i2c-core and i2c/muxes Acked-by: Corey Minyard # for IPMI Reviewed-by: Vladimir Oltean Acked-by: Dmitry Torokhov Acked-by: Sebastian Reichel # for drivers/power Acked-by: Krzysztof Hałasa Signed-off-by: Uwe Kleine-König Signed-off-by: Wolfram Sang

iio: health: afe4404: Switch to DEFINE_SIMPLE_DEV_PM_OPS() and pm_sleep_ptr()

2022-07-18T17:48:18Z

Using these newer macros allows the compiler to remove the unused structure and functions when !CONFIG_PM_SLEEP + removes the need to mark pm functions __maybe_unused. Signed-off-by: Jonathan Cameron Reviewed-by: Paul Cercueil Link: https://lore.kernel.org/r/20220621202719.13644-19-jic23@kernel.org

iio: health: afe4403: Switch to DEFINE_SIMPLE_DEV_PM_OPS() and pm_sleep_ptr()

2022-07-18T17:48:18Z

iio: health: afe4404: Remove duplicated error reporting in .remove()

2022-06-11T13:35:26Z

Returning an error value in an i2c remove callback results in an error message being emitted by the i2c core, but otherwise it doesn't make a difference. As afe4404_remove() already emits an error message on failure and the additional error message by the i2c core doesn't add any useful information, change the return value to zero to suppress this message. This patch is a preparation for making i2c remove callbacks return void. Signed-off-by: Uwe Kleine-König Link: https://lore.kernel.org/r/20220514130432.304674-1-u.kleine-koenig@pengutronix.de Signed-off-by: Jonathan Cameron

iio: core: Simplify the registration of kfifo buffers

2022-04-10T15:25:46Z

Among all the users of the kfifo buffers, no one uses the INDIO_BUFFER_HARDWARE mode. So let's take this as a general rule and simplify a little bit the internals - overall the documentation - by eliminating unused specific cases. Use the INDIO_BUFFER_SOFTWARE mode by default with kfifo buffers, which will basically mimic what all the "non direct" modes do. Cc: Benson Leung Cc: Guenter Roeck Cc: Jyoti Bhayana Cc: Jean-Baptiste Maneyrol Cc: Lorenzo Bianconi Cc: Michael Hennerich Cc: Greg Kroah-Hartman Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/r/20220207143840.707510-13-miquel.raynal@bootlin.com Signed-off-by: Jonathan Cameron

spi: make remove callback a void function

2022-02-09T13:00:45Z

The value returned by an spi driver's remove function is mostly ignored. (Only an error message is printed if the value is non-zero that the error is ignored.) So change the prototype of the remove function to return no value. This way driver authors are not tempted to assume that passing an error to the upper layer is a good idea. All drivers are adapted accordingly. There is no intended change of behaviour, all callbacks were prepared to return 0 before. Signed-off-by: Uwe Kleine-König Acked-by: Marc Kleine-Budde Acked-by: Andy Shevchenko Reviewed-by: Geert Uytterhoeven Acked-by: Jérôme Pouiller Acked-by: Miquel Raynal Acked-by: Jonathan Cameron Acked-by: Claudius Heine Acked-by: Stefan Schmidt Acked-by: Alexandre Belloni Acked-by: Ulf Hansson # For MMC Acked-by: Marcus Folkesson Acked-by: Łukasz Stelmach Acked-by: Lee Jones Link: https://lore.kernel.org/r/20220123175201.34839-6-u.kleine-koenig@pengutronix.de Signed-off-by: Mark Brown

iio: afe4404: Remove no-op trigger ops

2021-11-17T17:51:37Z

The IIO core handles a trigger ops with all NULL callbacks the same as if the trigger ops itself was NULL. Remove the empty trigger ops from the interrupt trigger driver to slightly reduce the boilerplate code. Object size of the driver module is also slightly reduced. Signed-off-by: Lars-Peter Clausen Link: https://lore.kernel.org/r/20211031142130.20791-5-lars@metafoo.de Signed-off-by: Jonathan Cameron

iio: afe4403: Remove no-op trigger ops

2021-11-17T17:51:36Z

iio: health: afe4403: Don't return an error in .remove()

2021-10-19T07:30:45Z

The only effect of returning an error in an spi .remove() callback is that the spi core issues another warning message. Don't report the same problem twice and return 0 unconditionally instead. Also degrade the log level to warning, as nothing really bad is expected from a failure to put the device in suspend mode. Signed-off-by: Uwe Kleine-König Reviewed-by: Alexandru Ardelean Link: https://lore.kernel.org/r/20211013203223.2694577-12-u.kleine-koenig@pengutronix.de Signed-off-by: Jonathan Cameron

iio: health: afe4404: Make use of the helper function dev_err_probe()

2021-10-19T07:30:44Z

When possible use dev_err_probe help to properly deal with the PROBE_DEFER error, the benefit is that DEFER issue will be logged in the devices_deferred debugfs file. Using dev_err_probe() can reduce code size, and the error value gets printed. Signed-off-by: Cai Huoqing Link: https://lore.kernel.org/r/20210928014403.1563-2-caihuoqing@baidu.com Signed-off-by: Jonathan Cameron