staging iio adt7410: sysfs store function must return length

Otherwise a write to the resolution entry never returns.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

diff --git a/drivers/staging/iio/adc/adt7410.c b/drivers/staging/iio/adc/adt7410.c
index a2defe64d10befdf7d50f10218848358e83928c4..9025161dfe0e361b5d74050479d66140bf15c8f0 100644 (file)
--- a/drivers/staging/iio/adc/adt7410.c
+++ b/drivers/staging/iio/adc/adt7410.c
@@ -257,7 +257,7 @@ static ssize_t adt7410_store_resolution(struct device *dev,
 
        chip->config = config;
 
-       return ret;
+       return len;
 }
 
 static IIO_DEVICE_ATTR(resolution, S_IRUGO | S_IWUSR,