2 files changed, 8 insertions, 0 deletions

diff --git a/arch/ppc/kernel/machine_kexec.c b/arch/ppc/kernel/machine_kexec.c
index 84d65a87191e..a72787747df7 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 73191310d8db..6d2aa0aa4642 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);