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pps: clients: gpio: Bail out on error when requesting GPIO echo line 

When requesting optional GPIO echo line, bail out on error,
so user will know that something wrong with the existing property.

Acked-by: Rodolfo Giometti <giometti@enneenne.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20210318130321.24227-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Andy Shevchenko 2021-03-18 15:03:15 +02:00 committed by Greg Kroah-Hartman
parent ae28c1be1e
commit a4780db3ad
1 changed files with 5 additions and 5 deletions
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10
drivers/pps/clients/pps-gpio.c
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@ -119,12 +119,12 @@ static int pps_gpio_setup(struct platform_device *pdev)
data->echo_pin = devm_gpiod_get_optional(&pdev->dev,
"echo",
GPIOD_OUT_LOW);
if (data->echo_pin) {
if (IS_ERR(data->echo_pin)) {
dev_err(&pdev->dev, "failed to request ECHO GPIO\n");
return PTR_ERR(data->echo_pin);
}
if (IS_ERR(data->echo_pin)) {
dev_err(&pdev->dev, "failed to request ECHO GPIO\n");
return PTR_ERR(data->echo_pin);
}
if (data->echo_pin) {
ret = of_property_read_u32(np,
"echo-active-ms",
&value);