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| author |   Stefan Brüns <stefan.bruens@rwth-aachen.de> | 2017-07-26 23:32:06 +0200 |
|---|---|---|
| committer |   Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2017-07-30 14:50:19 +0100 |
| commit | ff3aa88a4d61468baece3fc2bb54e2a3bea6360f (patch) | |
| tree | 963771037ce6cdcf0f27604070ad6eb2bccf7aae /drivers/iio/adc/stm32-adc-core.c | |
| parent | iio: trigger: stm32-timer: add enable attribute (diff) | |
| download | linux-dev-ff3aa88a4d61468baece3fc2bb54e2a3bea6360f.tar.xz linux-dev-ff3aa88a4d61468baece3fc2bb54e2a3bea6360f.zip | |
iio: adc: ina219: Avoid underflow for sleeping time
Proper support for the INA219 lowered the minimum sampling period from
2*140us to 2*84us. Subtracting 200us later leads to an underflow and
an almost infinite udelay later.
Using a signed int for the sampling period provides sufficient range
(at most 2*8640*1024us), but catches the underflow when comparing with
buffer_us.
Fixes: 18edac2e22f4 ("iio: adc: Fix integration time/averaging for INA219/220")
Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio/adc/stm32-adc-core.c')
0 files changed, 0 insertions, 0 deletions