diff options
| author | Jonathan Cameron <jic23@kernel.org> | 2016-12-30 18:25:49 +0000 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2017-01-10 19:54:59 +0000 |
| commit | 2bd72d84f6bc4dcdcc2b5d98881a9da536925b48 (patch) | |
| tree | 483356a8e2420fd83cca7f2d51dd9dce2bebcd50 /drivers/iio/adc/qcom-spmi-vadc.c | |
| parent | c3b2fdd0ea7ee5c01c1f0d572a32aec89c0373a4 (diff) | |
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>
Diffstat (limited to 'drivers/iio/adc/qcom-spmi-vadc.c')
| -rw-r--r-- | drivers/iio/adc/qcom-spmi-vadc.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/iio/adc/qcom-spmi-vadc.c b/drivers/iio/adc/qcom-spmi-vadc.c index aaf4caf06505..18eb2955cc21 100644 --- a/drivers/iio/adc/qcom-spmi-vadc.c +++ b/drivers/iio/adc/qcom-spmi-vadc.c @@ -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; } |