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iio: core: Fix IIO_VAL_FRACTIONAL_LOG2 for negative values
authorNikolaus Schulz <nikolaus.schulz@avionic-design.de>
Fri, 24 Mar 2017 12:41:51 +0000 (13:41 +0100)
committerJonathan Cameron <jic23@kernel.org>
Sun, 2 Apr 2017 10:14:49 +0000 (11:14 +0100)
commit7fd6592d1287046f61bfd3cda3c03cd35be490f7
treea47926f7b3e59dbb76684b9f18a1c3f2f2ae9082tree | snapshot (tar.gz zip)
parent51f528a1636f352ad776a912ac86026ac7a89a2acommit | diff
iio: core: Fix IIO_VAL_FRACTIONAL_LOG2 for negative values

Fix formatting of negative values of type IIO_VAL_FRACTIONAL_LOG2 by
switching from do_div(), which can't handle negative numbers, to
div_s64_rem().  Also use shift_right for shifting, which is safe with
negative values.

Signed-off-by: Nikolaus Schulz <nikolaus.schulz@avionic-design.de>
Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: stable@vger.kernel.org
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
drivers/iio/industrialio-core.c diff | blob | blame | history