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authorRussell King <rmk+kernel@arm.linux.org.uk>2011-03-16 23:35:26 +0000
committerRussell King <rmk+kernel@arm.linux.org.uk>2011-03-16 23:35:26 +0000
commitbd1274dc005c2cee41771a7cc616f4709a6e6323 (patch)
treefcfe103a499ca9e3d8fa0ecbca5b7d0d274da5ca /arch/arm/include/asm/system.h
parent1f0090a1eaa1b750a2fc5c99c91b790d5322a1fd (diff)
parent3ba6e69ad887f8a814267ed36fd4bfbddf8855a9 (diff)
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Merge branch 'v6v7' into devel
Conflicts: arch/arm/include/asm/cacheflush.h arch/arm/include/asm/proc-fns.h arch/arm/mm/Kconfig
Diffstat (limited to 'arch/arm/include/asm/system.h')
-rw-r--r--arch/arm/include/asm/system.h17
1 files changed, 9 insertions, 8 deletions
diff --git a/arch/arm/include/asm/system.h b/arch/arm/include/asm/system.h
index 97f6d60297d..9a87823642d 100644
--- a/arch/arm/include/asm/system.h
+++ b/arch/arm/include/asm/system.h
@@ -347,6 +347,7 @@ void cpu_idle_wait(void);
#include <asm-generic/cmpxchg-local.h>
#if __LINUX_ARM_ARCH__ < 6
+/* min ARCH < ARMv6 */
#ifdef CONFIG_SMP
#error "SMP is not supported on this platform"
@@ -365,7 +366,7 @@ void cpu_idle_wait(void);
#include <asm-generic/cmpxchg.h>
#endif
-#else /* __LINUX_ARM_ARCH__ >= 6 */
+#else /* min ARCH >= ARMv6 */
extern void __bad_cmpxchg(volatile void *ptr, int size);
@@ -379,7 +380,7 @@ static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
unsigned long oldval, res;
switch (size) {
-#ifdef CONFIG_CPU_32v6K
+#ifndef CONFIG_CPU_V6 /* min ARCH >= ARMv6K */
case 1:
do {
asm volatile("@ __cmpxchg1\n"
@@ -404,7 +405,7 @@ static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
: "memory", "cc");
} while (res);
break;
-#endif /* CONFIG_CPU_32v6K */
+#endif
case 4:
do {
asm volatile("@ __cmpxchg4\n"
@@ -450,12 +451,12 @@ static inline unsigned long __cmpxchg_local(volatile void *ptr,
unsigned long ret;
switch (size) {
-#ifndef CONFIG_CPU_32v6K
+#ifdef CONFIG_CPU_V6 /* min ARCH == ARMv6 */
case 1:
case 2:
ret = __cmpxchg_local_generic(ptr, old, new, size);
break;
-#endif /* !CONFIG_CPU_32v6K */
+#endif
default:
ret = __cmpxchg(ptr, old, new, size);
}
@@ -469,7 +470,7 @@ static inline unsigned long __cmpxchg_local(volatile void *ptr,
(unsigned long)(n), \
sizeof(*(ptr))))
-#ifdef CONFIG_CPU_32v6K
+#ifndef CONFIG_CPU_V6 /* min ARCH >= ARMv6K */
/*
* Note : ARMv7-M (currently unsupported by Linux) does not support
@@ -524,11 +525,11 @@ static inline unsigned long long __cmpxchg64_mb(volatile void *ptr,
(unsigned long long)(o), \
(unsigned long long)(n)))
-#else /* !CONFIG_CPU_32v6K */
+#else /* min ARCH = ARMv6 */
#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n))
-#endif /* CONFIG_CPU_32v6K */
+#endif
#endif /* __LINUX_ARM_ARCH__ >= 6 */