staging: iio: adc: max1363: prevent buffer overflow

ring->access.read_last() reads the entire datum from
the ring including padding and time stamp.

Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
1 file changed