mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-10-06 00:39:48 +00:00
Code Issues Releases Wiki Activity

gpio: pca953x: Expand comment for "reset" GPIO in ACPI case

Browse source 
GPIO ACPI library is going to be stricter about resources, thus, expand
comment regarding "reset" GPIO resource in this driver to clarify its
usage in ACPI case.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Andy Shevchenko 2017-03-22 16:11:13 +02:00 committed by Linus Walleij
parent b413d7a01c
commit 96530b3777
1 changed files with 7 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
drivers/gpio/gpio-pca953x.c
View file

@ -777,7 +777,13 @@ static int pca953x_probe(struct i2c_client *client,
chip->gpio_start = -1;
irq_base = 0;
/* See if we need to de-assert a reset pin */
/*
* See if we need to de-assert a reset pin.
*
* There is no known ACPI-enabled platforms that are
* using "reset" GPIO. Otherwise any of those platform
* must use _DSD method with corresponding property.
*/
reset_gpio = devm_gpiod_get_optional(&client->dev, "reset",
GPIOD_OUT_LOW);
if (IS_ERR(reset_gpio))