From: Bernd Schmidt <bernds_cb1@t-online.de>
Date: Wed, 7 May 2008 03:41:26 +0000 (+0800)
Subject: [Blackfin] arch: In the double fault handler, set up the PT_RETI slot
X-Git-Tag: v2.6.26-rc2~12^2~15
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=ddb3f00ca0897f585128a6cca229eeb9d91fa6ef;p=karo-tx-linux.git

[Blackfin] arch: In the double fault handler, set up the PT_RETI slot

In the double fault handler, set up the PT_RETI slot so that
we print out the correct return address in the dumping code.

Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
---

diff --git a/arch/blackfin/mach-common/entry.S b/arch/blackfin/mach-common/entry.S
index f2fb87e9a46e..7365a17a6a81 100644
--- a/arch/blackfin/mach-common/entry.S
+++ b/arch/blackfin/mach-common/entry.S
@@ -295,6 +295,11 @@ ENTRY(_double_fault)
          */
         SAVE_ALL_SYS
 
+	/* The dumping functions expect the return address in the RETI
+	 * slot.  */
+	r6 = retx;
+	[sp + PT_PC] = r6;
+
         r0 = sp;        /* stack frame pt_regs pointer argument ==> r0 */
         SP += -12;
         call _double_fault_c;