From: Dan Carpenter dan.carpenter@linaro.org
commit 507397d19b5a296aa339f7a1bd16284f668a1906 upstream.
The regulator_get_voltage() function returns negative error codes. This function saves it to an unsigned int and then does some range checking and, since the error code falls outside the correct range, it returns -EINVAL.
Beyond the messiness, this is bad because the regulator_get_voltage() function can return -EPROBE_DEFER and it's important to propagate that back properly so it can be handled.
Fixes: da35a7b526d9 ("iio: frequency: admv1013: add support for ADMV1013") Signed-off-by: Dan Carpenter dan.carpenter@linaro.org Link: https://lore.kernel.org/r/ce75aac3-2aba-4435-8419-02e59fdd862b@moroto.mounta... Cc: Stable@vger.kernel.org Signed-off-by: Jonathan Cameron Jonathan.Cameron@huawei.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/iio/frequency/admv1013.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
--- a/drivers/iio/frequency/admv1013.c +++ b/drivers/iio/frequency/admv1013.c @@ -344,9 +344,12 @@ static int admv1013_update_quad_filters(
static int admv1013_update_mixer_vgate(struct admv1013_state *st) { - unsigned int vcm, mixer_vgate; + unsigned int mixer_vgate; + int vcm;
vcm = regulator_get_voltage(st->reg); + if (vcm < 0) + return vcm;
if (vcm < 1800000) mixer_vgate = (2389 * vcm / 1000000 + 8100) / 100;