On Wed, Jan 10, 2018 at 10:36 AM, Dan Carpenter <dan.carpenter@xxxxxxxxxx> wrote: > "val" needs to be signed for the error handling to work. > > Fixes: 6cd225cc5d8a ("hwrng: exynos - add Samsung Exynos True RNG driver") > Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> > > diff --git a/drivers/char/hw_random/exynos-trng.c b/drivers/char/hw_random/exynos-trng.c > index 34d6f51ecbee..f4643e3ec346 100644 > --- a/drivers/char/hw_random/exynos-trng.c > +++ b/drivers/char/hw_random/exynos-trng.c > @@ -55,7 +55,7 @@ static int exynos_trng_do_read(struct hwrng *rng, void *data, size_t max, > bool wait) > { > struct exynos_trng_dev *trng; > - u32 val; > + int val; It seems that one forgot to run Smatch on the driver :). Reviewed-by: Krzysztof Kozlowski <krzk@xxxxxxxxxx> Best regards, Krzysztof