staging:iio:dac:ad5686: Check for negative values
authorLars-Peter Clausen <lars@metafoo.de>
Wed, 19 Oct 2011 15:51:28 +0000 (17:51 +0200)
committerGreg Kroah-Hartman <gregkh@suse.de>
Wed, 19 Oct 2011 20:57:05 +0000 (13:57 -0700)
commitcd8eca6f77108617a8c47a800533f1b78a357a79
treea75244bd5b24513bdbb04a8c5c7d2cd79aac8771
parent75bb23a2150e385230d1db52065641ca7cef63d3
staging:iio:dac:ad5686: Check for negative values

Currently it is possible to write negative values to the ad5686's raw attribute.
This will cause undefined behaviour, so reject negative values.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
drivers/staging/iio/dac/ad5686.c