X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=include%2Fasm-sparc64%2Fmmu_context.h;h=9fc225ed5500d20c5372653389d8783ffc49ef4b;hb=cbebc51f7b77d26ec23145d6ef22ac2b209f7955;hp=8d129032013e9b3e8fcf35a040f5438dab02959a;hpb=d5bb306b42e39ffecaf85d1f9d04a3b5d9a97c86;p=linux-2.6

diff --git a/include/asm-sparc64/mmu_context.h b/include/asm-sparc64/mmu_context.h
index 8d12903201..9fc225ed55 100644
--- a/include/asm-sparc64/mmu_context.h
+++ b/include/asm-sparc64/mmu_context.h
@@ -76,6 +76,9 @@ static inline void switch_mm(struct mm_struct *old_mm, struct mm_struct *mm, str
 	unsigned long ctx_valid, flags;
 	int cpu;
 
+	if (unlikely(mm == &init_mm))
+		return;
+
 	spin_lock_irqsave(&mm->context.lock, flags);
 	ctx_valid = CTX_VALID(mm->context);
 	if (!ctx_valid)