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authorLEROY Christophe <christophe.leroy@c-s.fr>2014-09-19 10:36:08 +0200
committerScott Wood <scottwood@freescale.com>2014-11-07 18:10:39 -0600
commit6cde2b6f399e7d68a4b482680850a077104f9068 (patch)
treeb00920b419103efbc2fb4851c826bcd1e1e7cc9c /arch/powerpc/kernel/head_8xx.S
parent749137a2516aea627cbdd49140e60bb60d80f18e (diff)
downloadblackbird-op-linux-6cde2b6f399e7d68a4b482680850a077104f9068.tar.gz
blackbird-op-linux-6cde2b6f399e7d68a4b482680850a077104f9068.zip
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>
Diffstat (limited to 'arch/powerpc/kernel/head_8xx.S')
-rw-r--r--arch/powerpc/kernel/head_8xx.S4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/head_8xx.S b/arch/powerpc/kernel/head_8xx.S
index 464be24fd3eb..c061bc8d9045 100644
--- 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
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