This series was inspired by some minor annoyance I have experienced a few times in recent reviews. Calling gpiod_set_array_value_cansleep() can be quite verbose due to having so many parameters. In most cases, we already have a struct gpio_descs that contains the first 3 parameters so we end up with 3 (or often even 6) pointer indirections at each call site. Also, people have a tendency to want to hard-code the first argument instead of using struct gpio_descs.ndescs, often without checking that ndescs >= the hard-coded value. So I'm proposing that we add a gpiod_multi_set_value_cansleep() function that is a wrapper around gpiod_set_array_value_cansleep() that has struct gpio_descs as the first parameter to make it a bit easier to read the code and avoid the hard-coding temptation. I've just done gpiod_multi_set_value_cansleep() for now since there were over 10 callers of this one. There aren't as many callers of the get and atomic variants, but we can add those too if this seems like a useful thing to do. Maintainers, if you prefer to have this go through the gpio tree, please give your Acked-by:. Several maintainers have also requested an immutable branch, so I expect that will be made available. And if there is anything leftover after the next kernel release, I will resend it. --- Changes in v3: - Added IS_ERR_OR_NULL() check to gpiod_multi_set_value_cansleep() - Added new patches to clean up accessing bitmap directly (ts-nbus, ad2s1210). - Added function prefix for max3191x. - Removed unnecessary braces in ad7606 patch. - Picked up additional trailers. - Link to v2: https://lore.kernel.org/r/20250206-gpio-set-array-helper-v2-0-1c5f048f79c3@xxxxxxxxxxxx Changes in v2: - Renamed new function from gpiods_multi_set_value_cansleep() to gpiod_multi_set_value_cansleep() - Fixed typo in name of replaced function in all commit messages. - Picked up trailers. - Link to v1: https://lore.kernel.org/r/20250131-gpio-set-array-helper-v1-0-991c8ccb4d6e@xxxxxxxxxxxx --- David Lechner (15): gpiolib: add gpiod_multi_set_value_cansleep() auxdisplay: seg-led-gpio: use gpiod_multi_set_value_cansleep bus: ts-nbus: validate ts,data-gpios array size bus: ts-nbus: use gpiod_multi_set_value_cansleep bus: ts-nbus: use bitmap_get_value8() gpio: max3191x: use gpiod_multi_set_value_cansleep iio: adc: ad7606: use gpiod_multi_set_value_cansleep iio: amplifiers: hmc425a: use gpiod_multi_set_value_cansleep iio: resolver: ad2s1210: use gpiod_multi_set_value_cansleep iio: resolver: ad2s1210: use bitmap_write mmc: pwrseq_simple: use gpiod_multi_set_value_cansleep mux: gpio: use gpiod_multi_set_value_cansleep net: mdio: mux-gpio: use gpiod_multi_set_value_cansleep phy: mapphone-mdm6600: use gpiod_multi_set_value_cansleep ASoC: adau1701: use gpiod_multi_set_value_cansleep drivers/auxdisplay/seg-led-gpio.c | 3 +-- drivers/bus/ts-nbus.c | 15 +++++++++------ drivers/gpio/gpio-max3191x.c | 18 +++++++----------- drivers/iio/adc/ad7606.c | 3 +-- drivers/iio/adc/ad7606_spi.c | 7 +++---- drivers/iio/amplifiers/hmc425a.c | 3 +-- drivers/iio/resolver/ad2s1210.c | 13 +++++-------- drivers/mmc/core/pwrseq_simple.c | 3 +-- drivers/mux/gpio.c | 4 +--- drivers/net/mdio/mdio-mux-gpio.c | 3 +-- drivers/phy/motorola/phy-mapphone-mdm6600.c | 4 +--- include/linux/gpio/consumer.h | 11 +++++++++++ sound/soc/codecs/adau1701.c | 4 +--- 13 files changed, 43 insertions(+), 48 deletions(-) --- base-commit: df4b2bbff898227db0c14264ac7edd634e79f755 change-id: 20250131-gpio-set-array-helper-bd4a328370d3 Best regards, -- David Lechner <dlechner@xxxxxxxxxxxx>
