From: LEROY Christophe <christophe.leroy@c-s.fr>
Date: Tue, 20 Jan 2015 09:57:33 +0000 (+0100)
Subject: powerpc/8xx: remove remaining unnecessary code in FixupDAR
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=2374d0af29c154d6d989987a94278caed8c13be5;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

powerpc/8xx: remove remaining unnecessary code in FixupDAR

Since commit 33fb845a6f01 ("powerpc/8xx: Don't use MD_TWC for walk"), MD_EPN and
MD_TWC are not writen anymore in FixupDAR so saving r3 has become useless.

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 65492d043964..73715cd0de45 100644
--- a/arch/powerpc/kernel/head_8xx.S
+++ b/arch/powerpc/kernel/head_8xx.S
@@ -529,9 +529,6 @@ DARFixed:/* Return from dcbx instruction bug workaround */
  /* define if you don't want to use self modifying code */
 #define NO_SELF_MODIFYING_CODE
 FixupDAR:/* Entry point for dcbx workaround. */
-#ifdef CONFIG_8xx_CPU6
-	mtspr	SPRN_DAR, r3
-#endif
 	mtspr	SPRN_SPRG_SCRATCH2, r10
 	/* fetch instruction from memory. */
 	mfspr	r10, SPRN_SRR0
@@ -548,9 +545,6 @@ FixupDAR:/* Entry point for dcbx workaround. */
 	/* Extract level 2 index */
 	rlwinm	r11, r11, 32 - (PAGE_SHIFT - 2), 32 - PAGE_SHIFT, 29
 	lwzx	r11, r10, r11	/* Get the pte */
-#ifdef CONFIG_8xx_CPU6
-	mfspr	r3, SPRN_DAR
-#endif
 	/* concat physical page address(r11) and page offset(r10) */
 	mfspr	r10, SPRN_SRR0
 	rlwimi	r11, r10, 0, 32 - PAGE_SHIFT, 31