iio: common: ssp_sensors: use ktime_get_real_ns() timestamps

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getnstimeofday() suffers from the overflow in y2038 on 32-bit
architectures and requires a conversion into the nanosecond format that
we want here.

This changes ssp_parse_dataframe() to use ktime_get_real_ns() directly,
which does not have that problem.

An open question is what time base should be used here. Normally
timestamps should use ktime_get_ns() or ktime_get_boot_ns() to read
monotonic time instead of "real" time, which suffers from time jumps
due to settimeofday() calls or leap seconds.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Arnd Bergmann 2017-11-27 12:51:48 +01:00 • committed by Greg Kroah-Hartman

parent 1b39eacdbd

commit a4493f227d

1 changed files with 1 additions and 4 deletions

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drivers/iio/common/ssp_sensors/ssp_spi.c

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