[PATCH] powerpc/crash: Fix non-smp kexec preparation

[Eddie James]

In non-smp configurations, crash_kexec_prepare is never called in
the crash shutdown path. One result of this is that the crashing_cpu
variable is never set, preventing crash_save_cpu from storing the
NT_PRSTATUS elf note in the core dump.

Fixes: c7255058b543 ("powerpc/crash: save cpu register data in crash_smp_send_stop()")
Signed-off-by: Eddie James <eajames at linux.ibm.com>
---
 arch/powerpc/kexec/crash.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/powerpc/kexec/crash.c b/arch/powerpc/kexec/crash.c
index 9ac3266e49652..8c11cfd19e734 100644
--- a/arch/powerpc/kexec/crash.c
+++ b/arch/powerpc/kexec/crash.c
@@ -359,7 +359,11 @@ void default_machine_crash_shutdown(struct pt_regs *regs)
 	if (TRAP(regs) == INTERRUPT_SYSTEM_RESET)
 		is_via_system_reset = 1;
 
+#ifdef CONFIG_SMP
 	crash_smp_send_stop();
+#else
+	crash_kexec_prepare();
+#endif
 
 	crash_save_cpu(regs, crashing_cpu);
 
-- 
2.43.5