Messages in this thread Patch in this message | | | From | Colin Cross <> | Subject | [PATCH] ARM: Fix spinlock bad magic on disabling nonboot cpu | Date | Fri, 19 Nov 2010 18:16:53 -0800 |
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The init_mm.context.id_lock spinlock is not initialized, which causes a spinlock bad magic warning when nonboot cpus are disabled, either through hotplug or during suspend.
Signed-off-by: Colin Cross <ccross@android.com> --- arch/arm/include/asm/mmu.h | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/arch/arm/include/asm/mmu.h b/arch/arm/include/asm/mmu.h index 68870c7..1556f6a 100644 --- a/arch/arm/include/asm/mmu.h +++ b/arch/arm/include/asm/mmu.h @@ -13,6 +13,8 @@ typedef struct { #ifdef CONFIG_CPU_HAS_ASID #define ASID(mm) ((mm)->context.id & 255) +#define INIT_MM_CONTEXT(name) \ + .context.id_lock = __SPIN_LOCK_UNLOCKED(name.context.id_lock), #else #define ASID(mm) (0) #endif -- 1.7.3.1
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