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Commit 6cde2b6f authored by LEROY Christophe's avatar LEROY Christophe Committed by Scott Wood
Browse files

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: default avatarChristophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: default avatarScott Wood <scottwood@freescale.com>
parent 749137a2

arch/powerpc/kernel/head_8xx.S

+2 −2
Original line number Diff line number Diff line
@@ -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