X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fsparc64%2Flib%2Fsplock.S;h=e466ed225e4653da8cdcd3d46b476d304b6ab899;hb=9bf4aaab3e101692164d49b7ca357651eb691cb6;hp=d17a3badda72d935e76f557c36ff2a6a41b87290;hpb=db216c3d5e4c040e557a50f8f5d35d5c415e8c1c;p=linux-2.6.git

diff --git a/arch/sparc64/lib/splock.S b/arch/sparc64/lib/splock.S
index d17a3badd..e466ed225 100644
--- a/arch/sparc64/lib/splock.S
+++ b/arch/sparc64/lib/splock.S
@@ -6,6 +6,18 @@
 	.text
 	.align	64
 
+	.globl		_raw_spin_lock
+_raw_spin_lock:		/* %o0 = lock_ptr */
+1:	ldstub		[%o0], %g7
+	brnz,pn		%g7, 2f
+	 membar		#StoreLoad | #StoreStore
+	retl
+	 nop
+2:	ldub		[%o0], %g7
+	brnz,pt		%g7, 2b
+	 membar		#LoadLoad
+	ba,a,pt		%xcc, 1b
+
 	.globl	_raw_spin_lock_flags
 _raw_spin_lock_flags:	/* %o0 = lock_ptr, %o1 = irq_flags */
 1:	ldstub		[%o0], %g7