From: Andy Shevchenko Date: Wed, 22 Mar 2017 14:11:13 +0000 (+0200) Subject: gpio: pca953x: Expand comment for "reset" GPIO in ACPI case X-Git-Tag: v4.12-rc1~100^2~30 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=96530b3777a7852222ca5ffa5eb20afed1be13bf;p=thirdparty%2Fkernel%2Flinux.git gpio: pca953x: Expand comment for "reset" GPIO in ACPI case 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 Signed-off-by: Linus Walleij --- diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c index 51c9d9cfd7424..b9373785ccf53 100644 --- a/drivers/gpio/gpio-pca953x.c +++ b/drivers/gpio/gpio-pca953x.c @@ -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))