X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=blobdiff_plain;f=arch%2Fcsky%2Fkernel%2Fatomic.S;h=3821ef9b75672d8a5af90839ffa7f95cfdb4da50;hb=f8e17c17b81070f38062dce79ca7f4541851dadd;hp=5b84f11485aeb8c6794699c54250cf8c54f5a91d;hpb=73ee89436047dc58005bed7d1ded679c35292164;p=linux.git

diff --git a/arch/csky/kernel/atomic.S b/arch/csky/kernel/atomic.S
index 5b84f11485ae..3821ef9b7567 100644
--- a/arch/csky/kernel/atomic.S
+++ b/arch/csky/kernel/atomic.S
@@ -17,10 +17,12 @@ ENTRY(csky_cmpxchg)
 	mfcr	a3, epc
 	addi	a3, TRAP0_SIZE
 
-	subi    sp, 8
+	subi    sp, 16
 	stw     a3, (sp, 0)
 	mfcr    a3, epsr
 	stw     a3, (sp, 4)
+	mfcr	a3, usp
+	stw     a3, (sp, 8)
 
 	psrset	ee
 #ifdef CONFIG_CPU_HAS_LDSTEX
@@ -47,7 +49,9 @@ ENTRY(csky_cmpxchg)
 	mtcr	a3, epc
 	ldw     a3, (sp, 4)
 	mtcr	a3, epsr
-	addi	sp, 8
+	ldw     a3, (sp, 8)
+	mtcr	a3, usp
+	addi	sp, 16
 	KSPTOUSP
 	rte
 END(csky_cmpxchg)