Messages in this thread Patch in this message | | | From | Ezequiel Garcia <> | Subject | [PATCH 2/3] clocksource: orion: Use atomic access for shared registers | Date | Sat, 10 Aug 2013 09:43:01 -0300 |
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Replace the driver-specific thread-safe shared register API by the recently introduced atomic_io_clear_set().
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> --- drivers/clocksource/time-orion.c | 9 ++------- 1 file changed, 2 insertions(+), 7 deletions(-)
diff --git a/drivers/clocksource/time-orion.c b/drivers/clocksource/time-orion.c index ecbeb68..4334ea7 100644 --- a/drivers/clocksource/time-orion.c +++ b/drivers/clocksource/time-orion.c @@ -35,20 +35,15 @@ #define ORION_ONESHOT_MAX 0xfffffffe static void __iomem *timer_base; -static DEFINE_SPINLOCK(timer_ctrl_lock); /* * Thread-safe access to TIMER_CTRL register * (shared with watchdog timer) */ -void orion_timer_ctrl_clrset(u32 clr, u32 set) +static void orion_timer_ctrl_clrset(u32 clr, u32 set) { - spin_lock(&timer_ctrl_lock); - writel((readl(timer_base + TIMER_CTRL) & ~clr) | set, - timer_base + TIMER_CTRL); - spin_unlock(&timer_ctrl_lock); + atomic_io_clear_set(timer_base + TIMER_CTRL, clr, set); } -EXPORT_SYMBOL(orion_timer_ctrl_clrset); /* * Free-running clocksource handling. -- 1.8.1.5
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