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power: reset: ltc2952: use _optional variant of devm_gpiod_get

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devm_gpiod_get_optional returns NULL if devm_gpiod_get would return an
ENOENT error pointer.

There is no semantic change intended.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
This commit is contained in:
Uwe Kleine-König 2015-05-18 22:45:07 +02:00 committed by Sebastian Reichel
parent a34c0a8bf8
commit 9f6cd98fc3
1 changed files with 3 additions and 4 deletions
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7
drivers/power/reset/ltc2952-poweroff.c
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@ -202,16 +202,15 @@ static int ltc2952_poweroff_init(struct platform_device *pdev)
return ret;
}
data->gpio_trigger = devm_gpiod_get(&pdev->dev, "trigger", GPIOD_IN);
data->gpio_trigger = devm_gpiod_get_optional(&pdev->dev, "trigger",
GPIOD_IN);
if (IS_ERR(data->gpio_trigger)) {
/*
* It's not a problem if the trigger gpio isn't available, but
* it is worth a warning if its use was defined in the device
* tree.
*/
if (PTR_ERR(data->gpio_trigger) != -ENOENT)
dev_err(&pdev->dev,
"unable to claim gpio \"trigger\"\n");
dev_err(&pdev->dev, "unable to claim gpio \"trigger\"\n");
data->gpio_trigger = NULL;
}