aboutsummaryrefslogtreecommitdiffstats
path: root/include/asm-i386
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@woody.osdl.org>2006-12-22 21:46:56 -0500
committerLinus Torvalds <torvalds@woody.osdl.org>2006-12-22 21:46:56 -0500
commit18ed1c051317ac3a685120cead2adb192b802347 (patch)
treec08a9147119a6cb69114166c7107f6b0bba6e2ab /include/asm-i386
parentdab6df63086762629936e8b89a5984bae39724f6 (diff)
parent36bcbec7ce21e2e8b3143b11a05747330abeca70 (diff)
Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (68 commits) ACPI: replace kmalloc+memset with kzalloc ACPI: Add support for acpi_load_table/acpi_unload_table_id fbdev: update after backlight argument change ACPI: video: Add dev argument for backlight_device_register ACPI: Implement acpi_video_get_next_level() ACPI: Kconfig - depend on PM rather than selecting it ACPI: fix NULL check in drivers/acpi/osl.c ACPI: make drivers/acpi/ec.c:ec_ecdt static ACPI: prevent processor module from loading on failures ACPI: fix single linked list manipulation ACPI: ibm_acpi: allow clean removal ACPI: fix git automerge failure ACPI: ibm_acpi: respond to workqueue update ACPI: dock: add uevent to indicate change in device status ACPI: ec: Lindent once again ACPI: ec: Change #define to enums there possible. ACPI: ec: Style changes. ACPI: ec: Acquire Global Lock under EC mutex. ACPI: ec: Drop udelay() from poll mode. Loop by reading status field instead. ACPI: ec: Rename gpe_bit to gpe ...
Diffstat (limited to 'include/asm-i386')
-rw-r--r--include/asm-i386/acpi.h26
1 files changed, 2 insertions, 24 deletions
diff --git a/include/asm-i386/acpi.h b/include/asm-i386/acpi.h
index c80b3a94511a..7cfad93edf10 100644
--- a/include/asm-i386/acpi.h
+++ b/include/asm-i386/acpi.h
@@ -56,30 +56,8 @@
56#define ACPI_ENABLE_IRQS() local_irq_enable() 56#define ACPI_ENABLE_IRQS() local_irq_enable()
57#define ACPI_FLUSH_CPU_CACHE() wbinvd() 57#define ACPI_FLUSH_CPU_CACHE() wbinvd()
58 58
59 59int __acpi_acquire_global_lock(unsigned int *lock);
60static inline int 60int __acpi_release_global_lock(unsigned int *lock);
61__acpi_acquire_global_lock (unsigned int *lock)
62{
63 unsigned int old, new, val;
64 do {
65 old = *lock;
66 new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1));
67 val = cmpxchg(lock, old, new);
68 } while (unlikely (val != old));
69 return (new < 3) ? -1 : 0;
70}
71
72static inline int
73__acpi_release_global_lock (unsigned int *lock)
74{
75 unsigned int old, new, val;
76 do {
77 old = *lock;
78 new = old & ~0x3;
79 val = cmpxchg(lock, old, new);
80 } while (unlikely (val != old));
81 return old & 0x1;
82}
83 61
84#define ACPI_ACQUIRE_GLOBAL_LOCK(GLptr, Acq) \ 62#define ACPI_ACQUIRE_GLOBAL_LOCK(GLptr, Acq) \
85 ((Acq) = __acpi_acquire_global_lock((unsigned int *) GLptr)) 63 ((Acq) = __acpi_acquire_global_lock((unsigned int *) GLptr))