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gpio: of: Don't return 0 on dt_gpio_count() 

It's unusual to have error checking like (ret <= 0) in cases when
counting GPIO resources. In case when it's mandatory we propagate the
error (-ENOENT), otherwise we don't use the result.

This makes consistent behaviour across all possible variants called in
gpiod_count().

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 2017-02-20 18:15:47 +02:00 committed by Linus Walleij
parent 4ed55016d7
commit 4033d4a4f5
1 changed files with 2 additions and 2 deletions
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4
drivers/gpio/gpiolib.c
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@ -3122,10 +3122,10 @@ static int dt_gpio_count(struct device *dev, const char *con_id)
gpio_suffixes[i]);
ret = of_gpio_named_count(dev->of_node, propname);
if (ret >= 0)
if (ret > 0)
break;
}
return ret;
return ret ? ret : -ENOENT;
}
static int platform_gpio_count(struct device *dev, const char *con_id)