Commit 2bd72d84 authored Dec 30, 2016 by Jonathan Cameron

iio:adc:qcom-spmi-vadc : fix undefined __divdi3



A simple do_div call works here as all the signed 64 bit is
actually small and unsigned at this point, and the numerator is
u32.

Introduce a temporary u64 variable to avoid type comparison warnings
on some architectures.

Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Cc: Rama Krishna Phani A <rphani@codeaurora.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

parent c3b2fdd0

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

+4 −2

Original line number	Diff line number	Diff line
		@@ -658,13 +658,15 @@ static int vadc_scale_die_temp(struct vadc_priv *vadc,
		{
		const struct vadc_prescale_ratio *prescale;
		s64 voltage = 0;
		u64 temp; /* Temporary variable for do_div */

		vadc_scale_calib(vadc, adc_code, prop, &voltage);

		if (voltage > 0) {
		prescale = &vadc_prescale_ratios[prop->prescale];
		voltage = voltage * prescale->den;
		voltage /= (prescale->num * 2);
		temp = voltage * prescale->den;
		do_div(temp, prescale->num * 2);
		voltage = temp;
		} else {
		voltage = 0;
		}