tree 4198df3102566ceec1e0d65052be1179aa610ba1
parent 3726a21833c9c96255735bddb5dacc8eacbff3ef
author Mylène Josserand <mylene.josserand@free-electrons.com> 1459234565 +0200
committer Alexandre Belloni <alexandre.belloni@free-electrons.com> 1463740431 +0200

rtc: m41t80: handle oscillator failure bit

Handle the Oscillator Failure (OF) bit on each read of date-time.
If the OF is set, an error is returned (-EINVAL) instead of the date-time.
The OF bit is cleared each time the date is set.

Signed-off-by: Mylène Josserand <mylene.josserand@free-electrons.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>