On Wed, Dec 12, 2018 at 11:10:31PM -0800, Andrey Smirnov wrote:
> NULL is used to designate a dummy regulator, so it it should be safe
> to use against regulator_enable(). Any value that would retrun true
> for IS_ERR(), OTOH, is not. Such value would also pass "if (r)" check
> without any problems.
>
> Fix the code to use !IS_ERR() instead.
>
> Signed-off-by: Andrey Smirnov <andrew.smirnov@xxxxxxxxx>
> ---
> drivers/serial/amba-pl011.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
Applied, thanks
Sascha
>
> diff --git a/drivers/serial/amba-pl011.c b/drivers/serial/amba-pl011.c
> index 4c4067d5b..ce40f840f 100644
> --- a/drivers/serial/amba-pl011.c
> +++ b/drivers/serial/amba-pl011.c
> @@ -185,7 +185,7 @@ static int pl011_probe(struct amba_device *dev, const struct amba_id *id)
> struct regulator *r;
>
> r = regulator_get(&dev->dev, NULL);
> - if (r) {
> + if (!IS_ERR(r)) {
> int ret;
>
> ret = regulator_enable(r);
> --
> 2.19.1
>
>
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