linux/drivers/iio/humidity
Harald Geyer 081d974031 iio: dht11: Use new function ktime_get_resolution_ns()
This cleans up the most ugly workaround in this driver. There are no
functional changes yet in the decoding algorithm, but we improve the
following things:
 * Get rid of spurious warning messages on systems with fast HRTIMER.
 * If the clock is not fast enough for decoding to work, we give
   up immediately.
 * In that case we return EAGAIN instead of EIO, so it's easier to
   discriminate causes of failure.

Returning EAGAIN is somewhat controversial: It's technically correct
as a faster clock might become available. OTOH once all clocks are
enabled this is a permanent error. There is no ECLOCKTOOSLOW error
code.

Signed-off-by: Harald Geyer <harald@ccbib.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-07-20 18:41:20 +01:00
..
dht11.c iio: dht11: Use new function ktime_get_resolution_ns() 2015-07-20 18:41:20 +01:00
Kconfig iio: Allow compile test of GPIO consumers if !GPIOLIB 2015-05-10 20:31:43 +01:00
Makefile IIO: add si7020 driver 2014-10-04 12:43:30 +01:00
si7005.c iio: Drop owner assignment from i2c_driver 2015-07-11 18:50:07 +01:00
si7020.c IIO: si7020: Allocate correct amount of memory in devm_iio_device_alloc 2015-02-14 11:35:12 +00:00