diff options
| author | Ralf Baechle <ralf@linux-mips.org> | 2011-06-01 19:04:59 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2011-06-09 15:01:38 +0200 |
| commit | 15f304b664c0d0a3e76ed3a9ce3615a86908babe (patch) | |
| tree | 5203cc0ce3981a7055003e04dc7d9aab56457e48 /drivers/clocksource/i8253.c | |
| parent | cb2455aa274b780802c593fecf115240a655d809 (diff) | |
i8253: Consolidate all kernel definitions of i8253_lock
Move them to drivers/clocksource/i8253.c and remove the
implementations in arch/
[ tglx: Avoid the extra file in lib - folded arch patches in. The
export will become conditional in a later step ]
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Link: http://lkml.kernel.org/r/20110601180610.221426078@duck.linux-mips.net
Cc: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'drivers/clocksource/i8253.c')
| -rw-r--r-- | drivers/clocksource/i8253.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/clocksource/i8253.c b/drivers/clocksource/i8253.c index 33735ebd2dc..e594f52eb88 100644 --- a/drivers/clocksource/i8253.c +++ b/drivers/clocksource/i8253.c @@ -6,10 +6,20 @@ #include <linux/io.h> #include <linux/spinlock.h> #include <linux/timex.h> - +#include <linux/module.h> #include <linux/i8253.h> /* + * Protects access to I/O ports + * + * 0040-0043 : timer0, i8253 / i8254 + * 0061-0061 : NMI Control Register which contains two speaker control bits. + */ +DEFINE_RAW_SPINLOCK(i8253_lock); +EXPORT_SYMBOL(i8253_lock); + +#ifdef CONFIG_CLKSRC_I8253 +/* * Since the PIT overflows every tick, its not very useful * to just read by itself. So use jiffies to emulate a free * running counter: @@ -86,3 +96,4 @@ int __init clocksource_i8253_init(void) { return clocksource_register_hz(&i8253_cs, PIT_TICK_RATE); } +#endif |