From 15f304b664c0d0a3e76ed3a9ce3615a86908babe Mon Sep 17 00:00:00 2001 From: Ralf Baechle Date: Wed, 1 Jun 2011 19:04:59 +0100 Subject: 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 Link: http://lkml.kernel.org/r/20110601180610.221426078@duck.linux-mips.net Cc: Russell King Signed-off-by: Thomas Gleixner --- drivers/clocksource/i8253.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) (limited to 'drivers/clocksource/i8253.c') diff --git a/drivers/clocksource/i8253.c b/drivers/clocksource/i8253.c index 33735eb..e594f52 100644 --- a/drivers/clocksource/i8253.c +++ b/drivers/clocksource/i8253.c @@ -6,10 +6,20 @@ #include #include #include - +#include #include /* + * 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 -- cgit v1.1