iio:adc:qcom-spmi-vadc: use div64_s64 instead of direct 64 bit division.

Another one of these that we missed previously which prevents test builds
of this driver on 32 bit platforms as it gives an undefined __divdi3 warning.

Signed-off-by: Jonathan Cameron <jic23@kernel.org>

diff --git a/drivers/iio/adc/qcom-spmi-vadc.c b/drivers/iio/adc/qcom-spmi-vadc.c
index faaf711325b524269a716822772858e5a31b8165..0a19761d656c66ab8ae87d871556f1f4f13f4884 100644 (file)
--- a/drivers/iio/adc/qcom-spmi-vadc.c
+++ b/drivers/iio/adc/qcom-spmi-vadc.c
@@ -641,7 +641,7 @@ static int vadc_scale_therm(struct vadc_priv *vadc,
        vadc_scale_calib(vadc, adc_code, prop, &voltage);
 
        if (prop->calibration == VADC_CALIB_ABSOLUTE)
-               voltage /= 1000;
+               voltage = div64_s64(voltage, 1000);
 
        vadc_map_voltage_temp(adcmap_100k_104ef_104fb,
                              ARRAY_SIZE(adcmap_100k_104ef_104fb),