From 530282278bc8ceca122f75c2f1c7f77f28aecc89 Mon Sep 17 00:00:00 2001 From: Rabin Vincent Date: Mon, 21 Jan 2013 13:09:31 +0100 Subject: clocksource: dbx500-prcmu: use relaxed readl variant Modify clksrc_dbx500_prcmu_read to replace readl() with readl_relaxed(). This speeds up calls to the function by about 40%. Signed-off-by: Rabin Vincent Acked-by: Linus Walleij Signed-off-by: Fabio Baltieri Signed-off-by: Linus Walleij --- drivers/clocksource/clksrc-dbx500-prcmu.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) (limited to 'drivers/clocksource') diff --git a/drivers/clocksource/clksrc-dbx500-prcmu.c b/drivers/clocksource/clksrc-dbx500-prcmu.c index 54f3d11..138c5a5 100644 --- a/drivers/clocksource/clksrc-dbx500-prcmu.c +++ b/drivers/clocksource/clksrc-dbx500-prcmu.c @@ -30,15 +30,14 @@ static void __iomem *clksrc_dbx500_timer_base; -static cycle_t clksrc_dbx500_prcmu_read(struct clocksource *cs) +static cycle_t notrace clksrc_dbx500_prcmu_read(struct clocksource *cs) { + void __iomem *base = clksrc_dbx500_timer_base; u32 count, count2; do { - count = readl(clksrc_dbx500_timer_base + - PRCMU_TIMER_DOWNCOUNT); - count2 = readl(clksrc_dbx500_timer_base + - PRCMU_TIMER_DOWNCOUNT); + count = readl_relaxed(base + PRCMU_TIMER_DOWNCOUNT); + count2 = readl_relaxed(base + PRCMU_TIMER_DOWNCOUNT); } while (count2 != count); /* Negate because the timer is a decrementing counter */ -- cgit v1.1 From 807eba55f73e98b76d0afdc197d942c46122bdca Mon Sep 17 00:00:00 2001 From: Fabio Baltieri Date: Mon, 21 Jan 2013 13:09:32 +0100 Subject: clocksource: dbx500-prcmu: comment cleanup Remove references to the deprecated DB5500 platform. Acked-by: Linus Walleij Signed-off-by: Fabio Baltieri Signed-off-by: Linus Walleij --- drivers/clocksource/clksrc-dbx500-prcmu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/clocksource') diff --git a/drivers/clocksource/clksrc-dbx500-prcmu.c b/drivers/clocksource/clksrc-dbx500-prcmu.c index 138c5a5..77398f8 100644 --- a/drivers/clocksource/clksrc-dbx500-prcmu.c +++ b/drivers/clocksource/clksrc-dbx500-prcmu.c @@ -10,7 +10,7 @@ * DBx500-PRCMU Timer * The PRCMU has 5 timers which are available in a always-on * power domain. We use the Timer 4 for our always-on clock - * source on DB8500 and Timer 3 on DB5500. + * source on DB8500. */ #include #include -- cgit v1.1