On Fri, 27 Jul 2018 09:42:45 +0300
Alexandru Ardelean <alexandru.ardelean@xxxxxxxxxx> wrote:
> From: Lars-Peter Clausen <lars@xxxxxxxxxx>
>
> 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 <lars@xxxxxxxxxx>
> Signed-off-by: Alexandru Ardelean <alexandru.ardelean@xxxxxxxxxx>
Should have had a fixes tag - admittedly this one is easy as it's been
there from the start, but none the less it is good practice to put
one for any fix.
Fixes: cd1678f96329 ("iio: frequency: New driver for AD9523 SPI Low Jitter Clock Generator")
I have added that an marked this for stable. It won't go anywhere until after
the coming merge window now though.
Applied to the fixes-togreg branch of iio.git
Thanks,
Jonathan
> ---
> 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 37504739c277..059b2fda8cbd 100644
> --- a/drivers/iio/frequency/ad9523.c
> +++ b/drivers/iio/frequency/ad9523.c
> @@ -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) {
--
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