diff options
| author | Andreas Klinger <ak@it-klinger.de> | 2019-09-09 14:37:21 +0200 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2019-10-09 19:11:25 +0100 |
| commit | 4043ecfb5fc4355a090111e14faf7945ff0fdbd5 (patch) | |
| tree | a98a336e51142e4dbb844fa9a5c6826af7e73028 /sound/ppc/tumbler.c | |
| parent | 6c59a962e081df6d8fe43325bbfabec57e0d4751 (diff) | |
iio: adc: hx711: fix bug in sampling of data
Fix bug in sampling function hx711_cycle() when interrupt occures while
PD_SCK is high. If PD_SCK is high for at least 60 us power down mode of
the sensor is entered which in turn leads to a wrong measurement.
Switch off interrupts during a PD_SCK high period and move query of DOUT
to the latest point of time which is at the end of PD_SCK low period.
This bug exists in the driver since it's initial addition. The more
interrupts on the system the higher is the probability that it happens.
Fixes: c3b2fdd0ea7e ("iio: adc: hx711: Add IIO driver for AVIA HX711")
Signed-off-by: Andreas Klinger <ak@it-klinger.de>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'sound/ppc/tumbler.c')
0 files changed, 0 insertions, 0 deletions