4.18-stable review patch. If anyone has any objections, please let me know.
------------------ From: Lars-Peter Clausen <[email protected]> commit 9a5094ca29ea9b1da301b31fd377c0c0c4c23034 upstream. 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: Greg Kroah-Hartman <[email protected]> --- drivers/iio/frequency/ad9523.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/iio/frequency/ad9523.c +++ b/drivers/iio/frequency/ad9523.c @@ -508,7 +508,7 @@ static ssize_t ad9523_store(struct devic return ret; if (!state) - return 0; + return len; mutex_lock(&indio_dev->mlock); switch ((u32)this_attr->address) {
