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

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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>
This commit is contained in:
LEROY Christophe
2014-09-19 10:36:08 +02:00
committed by Scott Wood
parent 749137a251
commit 6cde2b6f39
1 changed files with 2 additions and 2 deletions
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4
arch/powerpc/kernel/head_8xx.S
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@@ -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