[PATCH] Kdump: powerpc and s390 build failure fix

)

From: Vivek Goyal <vgoyal@in.ibm.com>

crash_setup_regs() is an architecture dependent function which is called in
architecture independent section.  So every architecture supporting kexec
should at least provide a dummy definition of crash_setup_regs() even if
crash dumping is not implemented yet, to avoid build failures.
Signed-off-by: NVivek Goyal <vgoyal@in.ibm.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

include/asm-powerpc/kexec.h

@@ -55,6 +55,12 @@ extern void default_machine_crash_shutdown(struct pt_regs *regs);
 
 #endif /* !CONFIG_KEXEC */
 
+/*
+ * Provide a dummy definition to avoid build failures. Will remain
+ * empty till crash dump support is enabled.
+ */
+static inline void crash_setup_regs(struct pt_regs *newregs,
+					struct pt_regs *oldregs) { }
 #endif /* ! __ASSEMBLY__ */
 #endif /* __KERNEL__ */
 #endif /* _ASM_POWERPC_KEXEC_H */

include/asm-s390/kexec.h

@@ -36,4 +36,8 @@
 
 #define MAX_NOTE_BYTES 1024
 
+/* Provide a dummy definition to avoid build failures. */
+static inline void crash_setup_regs(struct pt_regs *newregs,
+					struct pt_regs *oldregs) { }
+
 #endif /*_S390_KEXEC_H */