From bc75a24582f60a70e2b95fda94ff66f577b7a0db Mon Sep 17 00:00:00 2001
From: Albert Herranz <albert_herranz@yahoo.es>
Date: Tue, 12 Jul 2005 13:58:34 -0700
Subject: [PATCH] [PATCH] kexec-ppc: fix for ksysfs crash_notes
The following patch prevents the crash dump helper code found within kexec
from breaking ppc which still lacks crash dump functionality.
ksysfs crash_notes attribute handling was left under CONFIG_KEXEC for
simplicity although it is not strictly kexec related.
We provide here a dummy definition for crash_notes on ppc.
Signed-off-by: Albert Herranz <albert_herranz@yahoo.es>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Vivek Goyal <vgoyal@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
arch/ppc/kernel/machine_kexec.c | 6 ++++++
include/asm-ppc/kexec.h | 2 ++
2 files changed, 8 insertions(+)
diff --git a/arch/ppc/kernel/machine_kexec.c b/arch/ppc/kernel/machine_kexec.c
index 84d65a87191ed..a72787747df7e 100644
--- a/arch/ppc/kernel/machine_kexec.c
+++ b/arch/ppc/kernel/machine_kexec.c
@@ -28,6 +28,12 @@ typedef NORET_TYPE void (*relocate_new_kernel_t)(
const extern unsigned char relocate_new_kernel[];
const extern unsigned int relocate_new_kernel_size;
+/*
+ * Provide a dummy crash_notes definition while crash dump arrives to ppc.
+ * This prevents breakage of crash_notes attribute in kernel/ksysfs.c.
+ */
+void *crash_notes = NULL;
+
void machine_shutdown(void)
{
if (ppc_md.machine_shutdown)
diff --git a/include/asm-ppc/kexec.h b/include/asm-ppc/kexec.h
index 73191310d8dbf..6d2aa0aa46422 100644
--- a/include/asm-ppc/kexec.h
+++ b/include/asm-ppc/kexec.h
@@ -27,6 +27,8 @@
#ifndef __ASSEMBLY__
+extern void *crash_notes;
+
struct kimage;
extern void machine_kexec_simple(struct kimage *image);
--
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