csky: fixup remove vdsp implement for kernel.

The vr regs for vdsp only saved in task_switch not in every
exception trap-in. The memcpy with vdsp instructions will
destroy the vr regs for user space applications.

Signed-off-by: Guo Ren <ren_guo@c-sky.com>

diff --git a/arch/csky/abiv2/memcpy.S b/arch/csky/abiv2/memcpy.S
index 987fec60ab97d03d446f6392adf94db4a76dbf1f..145bf3a9360ee18636a4c66862ef34d4591e14fa 100644 (file)
--- a/arch/csky/abiv2/memcpy.S
+++ b/arch/csky/abiv2/memcpy.S
@@ -27,13 +27,7 @@ ENTRY(memcpy)
 
        LABLE_ALIGN
 .L_len_larger_16bytes:
-#if defined(__CSKY_VDSPV2__)
-       vldx.8  vr0, (r1), r19
-       PRE_BNEZAD (r18)
-       addi    r1, 16
-       vstx.8  vr0, (r0), r19
-       addi    r0, 16
-#elif defined(__CK860__)
+#if defined(__CK860__)
        ldw     r3, (r1, 0)
        stw     r3, (r0, 0)
        ldw     r3, (r1, 4)