diff options
| author | Rabin Vincent <[email protected]> | 2013-01-21 13:09:31 +0100 |
|---|---|---|
| committer | Linus Walleij <[email protected]> | 2013-05-27 14:05:54 +0200 |
| commit | 530282278bc8ceca122f75c2f1c7f77f28aecc89 (patch) | |
| tree | 0edbb9fe4b1a3d0559b3cbe0270924913c28c9df | |
| parent | e4aa937ec75df0eea0bee03bffa3303ad36c986b (diff) | |
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 <[email protected]>
Acked-by: Linus Walleij <[email protected]>
Signed-off-by: Fabio Baltieri <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
| -rw-r--r-- | drivers/clocksource/clksrc-dbx500-prcmu.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/drivers/clocksource/clksrc-dbx500-prcmu.c b/drivers/clocksource/clksrc-dbx500-prcmu.c index 54f3d119d99c..138c5a579550 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 */ |