patch "iio: ad9523: Fix return value for ad952x_store()" added to staging-testing

This is a note to let you know that I've just added the patch titled

iio: ad9523: Fix return value for ad952x_store()

to my staging git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git
in the staging-testing branch.

The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)

The patch will be merged to the staging-next branch sometime soon, after it passes testing, and the merge window is open.

If you have any questions about this process, please let me know.

From: Lars-Peter Clausen <[email protected]>
Date: Fri, 27 Jul 2018 09:42:45 +0300
Subject: iio: ad9523: Fix return value for ad952x_store()

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.

---
 drivers/iio/frequency/ad9523.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

index 37504739c277..059b2fda8cbd 100644
@@ -518,7 +518,7 @@ static ssize_t ad9523_store(struct device *dev,
 		return ret;
 
 	if (!state)
-		return 0;
+		return len;
 
 	mutex_lock(&st->lock);
 	switch ((u32)this_attr->address) {

2.18.0