From: Mike Frysinger <vapier@gentoo.org>
Date: Sun, 26 Jun 2011 18:08:27 +0000 (-0400)
Subject: Blackfin: dpmc: omit RETE/RETN when hibernating
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=429e257ea3bdd14e2401ee3f92d2846773294273;p=mv-sheeva.git

Blackfin: dpmc: omit RETE/RETN when hibernating

The RETE/RETN registers are only used in emulation(JTAG) and NMI nodes,
or as scratch registers, neither of which need to be saved/restored as
this code doesn't execute at those core event levels.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
---

diff --git a/arch/blackfin/mach-common/dpmc_modes.S b/arch/blackfin/mach-common/dpmc_modes.S
index 3fba05c9909..bebb0196162 100644
--- a/arch/blackfin/mach-common/dpmc_modes.S
+++ b/arch/blackfin/mach-common/dpmc_modes.S
@@ -510,8 +510,6 @@ ENTRY(_do_hibernate)
 	r0 = RETI;
 	[--sp] = r0;
 	[--sp] = RETX;
-	[--sp] = RETN;
-	[--sp] = RETE;
 	[--sp] = SEQSTAT;
 
 	/* Save Magic, return address and Stack Pointer */
@@ -533,8 +531,6 @@ ENTRY(_do_hibernate)
 
 	/* Restore Core Registers */
 	SEQSTAT = [sp++];
-	RETE = [sp++];
-	RETN = [sp++];
 	RETX = [sp++];
 	r0 = [sp++];
 	RETI = r0;