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Subject[PATCH v1 2/4] gpio: of: Don't return 0 on dt_gpio_count()
Date
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>
---
drivers/gpio/gpiolib.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 8b4d721d6d63..f8ee417de0b7 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -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)
--
2.11.0
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