# This is a BitKeeper generated patch for the following project:
# Project Name: Linux kernel tree
# This patch format is intended for GNU patch command version 2.5 or higher.
# This patch includes the following deltas:
#	           ChangeSet	1.1179  -> 1.1180 
#	include/asm-i386/acpi.h	1.12    -> 1.13   
#	include/asm-x86_64/acpi.h	1.6     -> 1.7    
#
# The following is the BitKeeper ChangeSet Log
# --------------------------------------------
# 04/03/05	len.brown@intel.com	1.1180
# [ACPI] global lock macro fixes (Paul Menage, Luming Yu)
#   http://bugzilla.kernel.org/show_bug.cgi?id=1669
# --------------------------------------------
#
diff -Nru a/include/asm-i386/acpi.h b/include/asm-i386/acpi.h
--- a/include/asm-i386/acpi.h	Fri Mar  5 00:57:31 2004
+++ b/include/asm-i386/acpi.h	Fri Mar  5 00:57:31 2004
@@ -61,33 +61,36 @@
  *  Immediate values in the assembly are preceded by "$" as in "$0x1"
  *  The final asm parameter are the operation altered non-output registers.
  */
+
+static inline int
+__acpi_acquire_global_lock (unsigned int *lock)
+{
+	unsigned int old, new, val;
+	do {
+		old = *lock;
+		new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1));
+		val = cmpxchg(lock, old, new);
+	} while (unlikely (val != old));
+	return (new < 3) ? -1 : 0;
+}
+
+static inline int
+__acpi_release_global_lock (unsigned int *lock)
+{
+	unsigned int old, new, val;
+	do {
+		old = *lock;
+		new = old & ~0x3;
+		val = cmpxchg(lock, old, new);
+	} while (unlikely (val != old));
+	return old & 0x1;
+}
+
 #define ACPI_ACQUIRE_GLOBAL_LOCK(GLptr, Acq) \
-    do { \
-        int dummy; \
-        asm("1:     movl (%1),%%eax;" \
-            "movl   %%eax,%%edx;" \
-            "andl   %2,%%edx;" \
-            "btsl   $0x1,%%edx;" \
-            "adcl   $0x0,%%edx;" \
-            "lock;  cmpxchgl %%edx,(%1);" \
-            "jnz    1b;" \
-            "cmpb   $0x3,%%dl;" \
-            "sbbl   %%eax,%%eax" \
-            :"=a"(Acq),"=c"(dummy):"c"(GLptr),"i"(~1L):"dx"); \
-    } while(0)
+	((Acq) = __acpi_acquire_global_lock((unsigned int *) GLptr))
 
 #define ACPI_RELEASE_GLOBAL_LOCK(GLptr, Acq) \
-    do { \
-        int dummy; \
-        asm("1:     movl (%1),%%eax;" \
-            "movl   %%eax,%%edx;" \
-            "andl   %2,%%edx;" \
-            "lock;  cmpxchgl %%edx,(%1);" \
-            "jnz    1b;" \
-            "andl   $0x1,%%eax" \
-            :"=a"(Acq),"=c"(dummy):"c"(GLptr),"i"(~3L):"dx"); \
-    } while(0)
-
+	((Acq) = __acpi_release_global_lock((unsigned int *) GLptr))
 
 /*
  * Math helper asm macros
diff -Nru a/include/asm-x86_64/acpi.h b/include/asm-x86_64/acpi.h
--- a/include/asm-x86_64/acpi.h	Fri Mar  5 00:57:31 2004
+++ b/include/asm-x86_64/acpi.h	Fri Mar  5 00:57:31 2004
@@ -52,40 +52,35 @@
 #define ACPI_ENABLE_IRQS()  __sti()
 #define ACPI_FLUSH_CPU_CACHE()	wbinvd()
 
-/*
- * A brief explanation as GNU inline assembly is a bit hairy
- *  %0 is the output parameter in RAX ("=a")
- *  %1 and %2 are the input parameters in RCX ("c")
- *  and an immediate value ("i") respectively
- *  All actual register references are preceded with "%%" as in "%%edx"
- *  Immediate values in the assembly are preceded by "$" as in "$0x1"
- *  The final asm parameter are the operation altered non-output registers.
- */
+static inline int
+__acpi_acquire_global_lock (unsigned int *lock)
+{
+	unsigned int old, new, val;
+	do {
+		old = *lock;
+		new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1));
+		val = cmpxchg(lock, old, new);
+	} while (unlikely (val != old));
+	return (new < 3) ? -1 : 0;
+}
+
+static inline int
+__acpi_release_global_lock (unsigned int *lock)
+{
+	unsigned int old, new, val;
+	do {
+		old = *lock;
+		new = old & ~0x3;
+		val = cmpxchg(lock, old, new);
+	} while (unlikely (val != old));
+	return old & 0x1;
+}
+
 #define ACPI_ACQUIRE_GLOBAL_LOCK(GLptr, Acq) \
-	do { \
-		unsigned long dummy; \
-		asm("1:     movl (%2),%%eax;" \
-			"movl   %%eax,%%edx;" \
-			"andq   %2,%%rdx;" \
-			"btsl   $0x1,%%edx;" \
-			"adcl   $0x0,%%edx;" \
-			"lock;  cmpxchgl %%edx,(%1);" \
-			"jnz    1b;" \
-			"cmpb   $0x3,%%dl;" \
-			"sbbl   %%eax,%%eax" \
-			:"=a"(Acq),"=c"(dummy):"c"(GLptr),"i"(~1L):"dx"); \
-	} while(0)
+	((Acq) = __acpi_acquire_global_lock((unsigned int *) GLptr))
+
 #define ACPI_RELEASE_GLOBAL_LOCK(GLptr, Acq) \
-	do { \
-		unsigned long dummy; \
-		asm("1:     movl (%2),%%eax;" \
-			"movl   %%eax,%%edx;" \
-			"andq   %2,%%rdx;" \
-			"lock;  cmpxchgl %%edx,(%1);" \
-			"jnz    1b;" \
-			"andl   $0x1,%%eax" \
-			:"=a"(Acq),"=c"(dummy):"c"(GLptr),"i"(~3L):"dx"); \
-	} while(0)
+	((Acq) = __acpi_release_global_lock((unsigned int *) GLptr))
 
 /*
  * Math helper asm macros