From: Lars-Peter Clausen <[email protected]> [ Upstream commit 9a5094ca29ea9b1da301b31fd377c0c0c4c23034 ]
A sysfs write callback function needs to either return the number of consumed characters or an error. The ad952x_store() function currently returns 0 if the input value was "0", this will signal that no characters have been consumed and the function will be called repeatedly in a loop indefinitely. Fix this by returning number of supplied characters to indicate that the whole input string has been consumed. Signed-off-by: Lars-Peter Clausen <[email protected]> Signed-off-by: Alexandru Ardelean <[email protected]> Fixes: cd1678f96329 ("iio: frequency: New driver for AD9523 SPI Low Jitter Clock Generator") Cc: <[email protected]> Signed-off-by: Jonathan Cameron <[email protected]> Signed-off-by: Sasha Levin <[email protected]> --- drivers/iio/frequency/ad9523.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/frequency/ad9523.c b/drivers/iio/frequency/ad9523.c index 99eba524f6dd..26caf7cc1db9 100644 --- a/drivers/iio/frequency/ad9523.c +++ b/drivers/iio/frequency/ad9523.c @@ -508,7 +508,7 @@ static ssize_t ad9523_store(struct device *dev, return ret; if (!state) - return 0; + return len; mutex_lock(&indio_dev->mlock); switch ((u32)this_attr->address) { -- 2.17.1
