staging:iio:ad7291: Use sign_extend32 instead of open-coding it

This makes it a bit more obvious what is going on than open-coding it.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Lars-Peter Clausen 2013-06-14 16:58:00 +01:00 • committed by Jonathan Cameron
commit 88198d2b42