diff --git a/arch/arm/mach-footbridge/isa-timer.c b/arch/arm/mach-footbridge/isa-timer.c index 3c7367be5459f5d3d38a10356ea8fde02090b0cb..71fd96df7f73714591b78d911e33070fbaa3516f 100644 --- a/arch/arm/mach-footbridge/isa-timer.c +++ b/arch/arm/mach-footbridge/isa-timer.c @@ -19,8 +19,6 @@ #include "common.h" -DEFINE_RAW_SPINLOCK(i8253_lock); - static void pit_set_mode(enum clock_event_mode mode, struct clock_event_device *evt) { diff --git a/arch/mips/kernel/i8253.c b/arch/mips/kernel/i8253.c index 82b5a9f037e7249a92cb7c29698eef96c1b47669..3d2ff57fa69aff906d278469079b7f77165594a9 100644 --- a/arch/mips/kernel/i8253.c +++ b/arch/mips/kernel/i8253.c @@ -16,9 +16,6 @@ #include #include -DEFINE_RAW_SPINLOCK(i8253_lock); -EXPORT_SYMBOL(i8253_lock); - /* * Initialize the PIT timer. * diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index da349723d4115cef7d75aac4680ba2284deaf0d0..e6060a1c1b5816c94e3c1381522a9f9d98cf0dc9 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -70,6 +70,7 @@ config X86 select IRQ_FORCED_THREADING select USE_GENERIC_SMP_HELPERS if SMP select HAVE_BPF_JIT if (X86_64 && NET) + select I8253_LOCK config INSTRUCTION_DECODER def_bool (KPROBES || PERF_EVENTS) diff --git a/arch/x86/kernel/i8253.c b/arch/x86/kernel/i8253.c index 323555050f8998a384b24a3f350f0774bb63ea1f..9c92b6ff571fd97765405844d5f7467efee212d8 100644 --- a/arch/x86/kernel/i8253.c +++ b/arch/x86/kernel/i8253.c @@ -16,9 +16,6 @@ #include #include -DEFINE_RAW_SPINLOCK(i8253_lock); -EXPORT_SYMBOL(i8253_lock); - /* * HPET replaces the PIT, when enabled. So we need to know, which of * the two timers is used diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig index 96c92191046961818638aeb3650972e1e39df165..330343bcb67ea712c1b1a00b20fcaf1a28c73106 100644 --- a/drivers/clocksource/Kconfig +++ b/drivers/clocksource/Kconfig @@ -1,5 +1,11 @@ config CLKSRC_I8253 bool +config I8253_LOCK + bool + +config CLKBLD_I8253 + def_bool y if CLKSRC_I8253 || I8253_LOCK + config CLKSRC_MMIO bool diff --git a/drivers/clocksource/Makefile b/drivers/clocksource/Makefile index b995942a50609ac404ce3a0202db9662bef34de0..7922a0cfc99f400b5bcc184c2133e3ce90bddd0f 100644 --- a/drivers/clocksource/Makefile +++ b/drivers/clocksource/Makefile @@ -6,5 +6,5 @@ obj-$(CONFIG_CS5535_CLOCK_EVENT_SRC) += cs5535-clockevt.o obj-$(CONFIG_SH_TIMER_CMT) += sh_cmt.o obj-$(CONFIG_SH_TIMER_MTU2) += sh_mtu2.o obj-$(CONFIG_SH_TIMER_TMU) += sh_tmu.o -obj-$(CONFIG_CLKSRC_I8253) += i8253.o +obj-$(CONFIG_CLKBLD_I8253) += i8253.o obj-$(CONFIG_CLKSRC_MMIO) += mmio.o diff --git a/drivers/clocksource/i8253.c b/drivers/clocksource/i8253.c index 33735ebd2dccc81cc7474cb013340506aff4e17d..e594f52eb88ecb1eb87c80aacf35d6be8a5560ed 100644 --- a/drivers/clocksource/i8253.c +++ b/drivers/clocksource/i8253.c @@ -6,9 +6,19 @@ #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 @@ -86,3 +96,4 @@ int __init clocksource_i8253_init(void) { return clocksource_register_hz(&i8253_cs, PIT_TICK_RATE); } +#endif diff --git a/init/Kconfig b/init/Kconfig index ebafac4231eeff15883809419e6df0c211b90e1a..2d2ef447a9abdd4be4fae030107c8ffe8aa69bb4 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -1002,6 +1002,7 @@ config ELF_CORE config PCSPKR_PLATFORM bool "Enable PC-Speaker support" if EXPERT depends on ALPHA || X86 || MIPS || PPC_PREP || PPC_CHRP || PPC_PSERIES + select I8253_LOCK default y help This option allows to disable the internal PC-Speaker