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Code Issues Releases Wiki Activity

leds: lp55xx: Use gpiod_set_value_cansleep()

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Use gpiod_set_value_cansleep in the init_device function. Without this
change, the driver may print a warning if the LP55xx enable pin is
connected to a GPIO chip which can sleep (e.g. a GPIO expander):

WARNING: CPU: 0 PID: 2719 at drivers/gpio/gpiolib.c:3051 gpiod_set_value+0x64/0xbc

Signed-off-by: Stefan Eichenberger <eichest@gmail.com>
Link: https://lore.kernel.org/r/20230918143238.75600-1-eichest@gmail.com
Signed-off-by: Lee Jones <lee@kernel.org>
This commit is contained in:
Stefan Eichenberger 2023-09-18 16:32:38 +02:00 committed by Lee Jones
parent e3c9d95213
commit 7c977019c5
1 changed files with 2 additions and 2 deletions
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4
drivers/leds/leds-lp55xx-common.c
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@ -442,9 +442,9 @@ int lp55xx_init_device(struct lp55xx_chip *chip)
gpiod_direction_output(pdata->enable_gpiod, 0);
gpiod_set_consumer_name(pdata->enable_gpiod, "LP55xx enable");
gpiod_set_value(pdata->enable_gpiod, 0);
gpiod_set_value_cansleep(pdata->enable_gpiod, 0);
usleep_range(1000, 2000); /* Keep enable down at least 1ms */
gpiod_set_value(pdata->enable_gpiod, 1);
gpiod_set_value_cansleep(pdata->enable_gpiod, 1);
usleep_range(1000, 2000); /* 500us abs min. */
}