powerpc: Provide dummy crash_shutdown_register
When kexec is disabled, the crash_shutdown_{un,}register
functions are not available in the kernel.
This provides dummy inline functions for those so that
the callers don't have to worry about it.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/include/asm-powerpc/kexec.h b/include/asm-powerpc/kexec.h
index 701857b..acdcdc6 100644
--- a/include/asm-powerpc/kexec.h
+++ b/include/asm-powerpc/kexec.h
@@ -34,6 +34,8 @@
#ifndef __ASSEMBLY__
#include <linux/cpumask.h>
+typedef void (*crash_shutdown_t)(void);
+
#ifdef CONFIG_KEXEC
#ifdef __powerpc64__
@@ -123,7 +125,6 @@
extern void default_machine_kexec(struct kimage *image);
extern int default_machine_kexec_prepare(struct kimage *image);
extern void default_machine_crash_shutdown(struct pt_regs *regs);
-typedef void (*crash_shutdown_t)(void);
extern int crash_shutdown_register(crash_shutdown_t handler);
extern int crash_shutdown_unregister(crash_shutdown_t handler);
@@ -143,6 +144,16 @@
static inline void reserve_crashkernel(void) { ; }
+static inline int crash_shutdown_register(crash_shutdown_t handler)
+{
+ return 0;
+}
+
+static inline int crash_shutdown_unregister(crash_shutdown_t handler)
+{
+ return 0;
+}
+
#endif /* CONFIG_KEXEC */
#endif /* ! __ASSEMBLY__ */
#endif /* __KERNEL__ */