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

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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@xxxxxxxxxx>
---
 drivers/iio/adc/qcom-spmi-vadc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iio/adc/qcom-spmi-vadc.c b/drivers/iio/adc/qcom-spmi-vadc.c
index faaf711325b5..0a19761d656c 100644
--- 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),
-- 
2.11.0

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