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 <[email protected]>

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

drivers/iio/adc/qcom-spmi-vadc.c +1 -1

index faaf711325b5..0a19761d656c 100644
@@ -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),

Quoted 3 lines · Jonathan Cameron

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.

I'm going to apply (well actually I already did by accident) this one and send a pull request to Greg.

We are far enough into the cycle that I want to start getting stuff into linux-next.

Rama, if you get a chance, please do test the 3 patches I've added to fix up build issues for this driver.

Thanks,

Jonathan

Quoted 19 lines

Signed-off-by Jonathan Cameron <[email protected]>

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

drivers/iio/adc/qcom-spmi-vadc.c +1 -1

index faaf711325b5..0a19761d656c 100644
@@ -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),