tree 8bcfbf309e1addc002e5c8d6435a7ae5b1e03c76
parent bb02c662d641d51ea8c3ae9c828e89fbcfe04ba7
author Ezequiel Garcia <ezequiel.garcia@free-electrons.com> 1392073221 -0300
committer Jason Cooper <jason@lakedaemon.net> 1393040562 +0000

watchdog: orion: Use atomic access for shared registers

Since the timer control register is shared with the clocksource driver,
use the recently introduced atomic_io_clear_set() to access such register.
Given the watchdog core already provides serialization for all the
watchdog ops, this commit allows to remove the spinlock entirely.

Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Tested-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Acked-by: Wim Van Sebroeck <wim@iguana.be>
Tested-By: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>