powerpc/8xx: No need to restore registers and save them again.

In DTLBError handler there is not need to restore r10, r11 and cr registers
after fixing DAR as they are saved again to the same place just after.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Scott Wood <scottwood@freescale.com>

diff --git a/arch/powerpc/kernel/head_8xx.S b/arch/powerpc/kernel/head_8xx.S
index 464be24..c061bc8 100644 (file)
--- a/arch/powerpc/kernel/head_8xx.S
+++ b/arch/powerpc/kernel/head_8xx.S
@@ -481,8 +481,8 @@ DataTLBError:
        cmpwi   cr0, r11, 0x00f0
        beq-    FixupDAR        /* must be a buggy dcbX, icbi insn. */
 DARFixed:/* Return from dcbx instruction bug workaround */
-       EXCEPTION_EPILOG_0
-       EXCEPTION_PROLOG
+       EXCEPTION_PROLOG_1
+       EXCEPTION_PROLOG_2
        mfspr   r10,SPRN_DSISR
        stw     r10,_DSISR(r11)
        mr      r5,r10