[PATCH] x86: i8253/i8259A lock cleanup

Introduce proper declarations for i8253_lock and i8259A_lock.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 files changed, 30 insertions, 18 deletions

diff --git a/arch/i386/kernel/apic.c b/arch/i386/kernel/apic.c
index 93df90bbb87e..bd1dbf3bd223 100644
--- a/arch/i386/kernel/apic.c
+++ b/arch/i386/kernel/apic.c
@@ -35,6 +35,7 @@
 #include <asm/desc.h>
 #include <asm/arch_hooks.h>
 #include <asm/hpet.h>
+#include <asm/i8253.h>
 
 #include <mach_apic.h>
 
@@ -879,7 +880,6 @@ fake_ioapic_page:
  */
 static unsigned int __devinit get_8254_timer_count(void)
 {
-        extern spinlock_t i8253_lock;
         unsigned long flags;
 
         unsigned int count;
diff --git a/arch/i386/kernel/apm.c b/arch/i386/kernel/apm.c
index d48ce9290963..064211d5f41b 100644
--- a/arch/i386/kernel/apm.c
+++ b/arch/i386/kernel/apm.c
@@ -228,10 +228,10 @@
 #include <asm/system.h>
 #include <asm/uaccess.h>
 #include <asm/desc.h>
+#include <asm/i8253.h>
 
 #include "io_ports.h"
 
-extern spinlock_t i8253_lock;
 extern unsigned long get_cmos_time(void);
 extern void machine_real_restart(unsigned char *, int);
 
@@ -1168,8 +1168,7 @@ static void get_time_diff(void)
 static void reinit_timer(void)
 {
 #ifdef INIT_TIMER_AFTER_SUSPEND
-        unsigned long   flags;
-        extern spinlock_t i8253_lock;
+        unsigned long flags;
 
         spin_lock_irqsave(&i8253_lock, flags);
         /* set the clock to 100 Hz */
diff --git a/arch/i386/kernel/io_apic.c b/arch/i386/kernel/io_apic.c
index 35eb8e29c485..6578f40bd501 100644
--- a/arch/i386/kernel/io_apic.c
+++ b/arch/i386/kernel/io_apic.c
@@ -37,6 +37,7 @@
 #include <asm/smp.h>
 #include <asm/desc.h>
 #include <asm/timer.h>
+#include <asm/i8259.h>
 
 #include <mach_apic.h>
 
@@ -1566,7 +1567,6 @@ void print_all_local_APICs (void)
 
 void /*__init*/ print_PIC(void)
 {
-        extern spinlock_t i8259A_lock;
         unsigned int v;
         unsigned long flags;
 
diff --git a/arch/i386/kernel/time.c b/arch/i386/kernel/time.c
index e68d9fdb0759..2854c357377f 100644
--- a/arch/i386/kernel/time.c
+++ b/arch/i386/kernel/time.c
@@ -68,7 +68,8 @@
 
 #include "io_ports.h"
 
-extern spinlock_t i8259A_lock;
+#include <asm/i8259.h>
+
 int pit_latch_buggy;              /* extern */
 
 #include "do_timer.h"
@@ -85,6 +86,8 @@ extern unsigned long wall_jiffies;
 DEFINE_SPINLOCK(rtc_lock);
 EXPORT_SYMBOL(rtc_lock);
 
+#include <asm/i8253.h>
+
 DEFINE_SPINLOCK(i8253_lock);
 EXPORT_SYMBOL(i8253_lock);
 
diff --git a/arch/i386/kernel/timers/timer_cyclone.c b/arch/i386/kernel/timers/timer_cyclone.c
index f6f1206a11bb..13892a65c941 100644
--- a/arch/i386/kernel/timers/timer_cyclone.c
+++ b/arch/i386/kernel/timers/timer_cyclone.c
@@ -17,9 +17,9 @@
 #include <asm/io.h>
 #include <asm/pgtable.h>
 #include <asm/fixmap.h>
-#include "io_ports.h"
+#include <asm/i8253.h>
 
-extern spinlock_t i8253_lock;
+#include "io_ports.h"
 
 /* Number of usecs that the last interrupt was delayed */
 static int delay_at_last_interrupt;
diff --git a/arch/i386/kernel/timers/timer_pit.c b/arch/i386/kernel/timers/timer_pit.c
index 967d5453cd0e..06de036a820c 100644
--- a/arch/i386/kernel/timers/timer_pit.c
+++ b/arch/i386/kernel/timers/timer_pit.c
@@ -15,9 +15,8 @@
 #include <asm/smp.h>
 #include <asm/io.h>
 #include <asm/arch_hooks.h>
+#include <asm/i8253.h>
 
-extern spinlock_t i8259A_lock;
-extern spinlock_t i8253_lock;
 #include "do_timer.h"
 #include "io_ports.h"
 
@@ -166,7 +165,6 @@ struct init_timer_opts __initdata timer_pit_init = {
 
 void setup_pit_timer(void)
 {
-        extern spinlock_t i8253_lock;
         unsigned long flags;
 
         spin_lock_irqsave(&i8253_lock, flags);
diff --git a/arch/i386/kernel/timers/timer_tsc.c b/arch/i386/kernel/timers/timer_tsc.c
index f46e625bab67..8f4e4d5bc560 100644
--- a/arch/i386/kernel/timers/timer_tsc.c
+++ b/arch/i386/kernel/timers/timer_tsc.c
@@ -24,6 +24,7 @@
 #include "mach_timer.h"
 
 #include <asm/hpet.h>
+#include <asm/i8253.h>
 
 #ifdef CONFIG_HPET_TIMER
 static unsigned long hpet_usec_quotient;
@@ -35,8 +36,6 @@ static inline void cpufreq_delayed_get(void);
 
 int tsc_disable __devinitdata = 0;
 
-extern spinlock_t i8253_lock;
-
 static int use_tsc;
 /* Number of usecs that the last interrupt was delayed */
 static int delay_at_last_interrupt;
diff --git a/arch/i386/mach-voyager/voyager_basic.c b/arch/i386/mach-voyager/voyager_basic.c
index 602aea240e9b..3e439ce5e1b2 100644
--- a/arch/i386/mach-voyager/voyager_basic.c
+++ b/arch/i386/mach-voyager/voyager_basic.c
@@ -30,6 +30,7 @@
 #include <linux/irq.h>
 #include <asm/tlbflush.h>
 #include <asm/arch_hooks.h>
+#include <asm/i8253.h>
 
 /*
  * Power off function, if any
@@ -182,7 +183,6 @@ voyager_timer_interrupt(struct pt_regs *regs)
                  * and swiftly introduce it to something sharp and
                  * pointy.  */
                 __u16 val;
-                extern spinlock_t i8253_lock;
 
                 spin_lock(&i8253_lock);
                 
diff --git a/arch/x86_64/kernel/io_apic.c b/arch/x86_64/kernel/io_apic.c
index 157190d986bb..d206d7e49cf5 100644
--- a/arch/x86_64/kernel/io_apic.c
+++ b/arch/x86_64/kernel/io_apic.c
@@ -1064,7 +1064,6 @@ void print_all_local_APICs (void)
 
 void __apicdebuginit print_PIC(void)
 {
-        extern spinlock_t i8259A_lock;
         unsigned int v;
         unsigned long flags;
 
diff --git a/drivers/ide/legacy/hd.c b/drivers/ide/legacy/hd.c
index e884cd4b22fd..242029c9c0ca 100644
--- a/drivers/ide/legacy/hd.c
+++ b/drivers/ide/legacy/hd.c
@@ -156,11 +156,13 @@ else \
 
 
 #if (HD_DELAY > 0)
+
+#include <asm/i8253.h>
+
 unsigned long last_req;
 
 unsigned long read_timer(void)
 {
-        extern spinlock_t i8253_lock;
         unsigned long t, flags;
         int i;
 
diff --git a/drivers/input/gameport/gameport.c b/drivers/input/gameport/gameport.c
index 3e72c9b1461e..ab09cf4093e3 100644
--- a/drivers/input/gameport/gameport.c
+++ b/drivers/input/gameport/gameport.c
@@ -60,12 +60,13 @@ static void gameport_disconnect_port(struct gameport *gameport);
 
 #if defined(__i386__)
 
+#include <asm/i8253.h>
+
 #define DELTA(x,y)      ((y)-(x)+((y)<(x)?1193182/HZ:0))
 #define GET_TIME(x)     do { x = get_time_pit(); } while (0)
 
 static unsigned int get_time_pit(void)
 {
-        extern spinlock_t i8253_lock;
         unsigned long flags;
         unsigned int count;
 
diff --git a/drivers/input/joystick/analog.c b/drivers/input/joystick/analog.c
index 504b7d550567..c3a5739030c3 100644
--- a/drivers/input/joystick/analog.c
+++ b/drivers/input/joystick/analog.c
@@ -140,12 +140,14 @@ struct analog_port {
  */
 
 #ifdef __i386__
+
+#include <asm/i8253.h>
+
 #define GET_TIME(x)     do { if (cpu_has_tsc) rdtscl(x); else x = get_time_pit(); } while (0)
 #define DELTA(x,y)      (cpu_has_tsc ? ((y) - (x)) : ((x) - (y) + ((x) < (y) ? CLOCK_TICK_RATE / HZ : 0)))
 #define TIME_NAME       (cpu_has_tsc?"TSC":"PIT")
 static unsigned int get_time_pit(void)
 {
-        extern spinlock_t i8253_lock;
         unsigned long flags;
         unsigned int count;
 
diff --git a/include/asm-i386/i8253.h b/include/asm-i386/i8253.h
new file mode 100644
index 000000000000..015d8df07690
--- /dev/null
+++ b/include/asm-i386/i8253.h
@@ -0,0 +1,6 @@
+#ifndef __ASM_I8253_H__
+#define __ASM_I8253_H__
+
+extern spinlock_t i8253_lock;
+
+#endif  /* __ASM_I8253_H__ */
diff --git a/include/asm-i386/mach-default/do_timer.h b/include/asm-i386/mach-default/do_timer.h
index 03dd13a48a8c..56211414fc95 100644
--- a/include/asm-i386/mach-default/do_timer.h
+++ b/include/asm-i386/mach-default/do_timer.h
@@ -1,6 +1,7 @@
 /* defines for inline arch setup functions */
 
 #include <asm/apic.h>
+#include <asm/i8259.h>
 
 /**
  * do_timer_interrupt_hook - hook into timer tick
diff --git a/include/asm-x86_64/io_apic.h b/include/asm-x86_64/io_apic.h
index 32573749004c..a8babd2bbe84 100644
--- a/include/asm-x86_64/io_apic.h
+++ b/include/asm-x86_64/io_apic.h
@@ -217,4 +217,6 @@ extern int assign_irq_vector(int irq);
 
 void enable_NMI_through_LVT0 (void * dummy);
 
+extern spinlock_t i8259A_lock;
+
 #endif