powerpc/watchdog: regs can't be null in soft_nmi_interrupt()

soft_nmi_interrupt() is called directly from the asm exception
handling code, which passes regs as a pointer to the stack. So regs
can't be NULL, it may be full of junk, but that's a separate problem.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

1 files changed, 1 insertions, 4 deletions

diff --git a/arch/powerpc/kernel/watchdog.c b/arch/powerpc/kernel/watchdog.c
index c00baea616ba..80a467eb532a 100644
--- a/arch/powerpc/kernel/watchdog.c
+++ b/arch/powerpc/kernel/watchdog.c
@@ -257,10 +257,7 @@ void soft_nmi_interrupt(struct pt_regs *regs)
                 pr_emerg("CPU %d self-detected hard LOCKUP\n", cpu);
                 print_modules();
                 print_irqtrace_events(current);
-                if (regs)
-                        show_regs(regs);
-                else
-                        dump_stack();
+                show_regs(regs);
 
                 wd_smp_unlock(&flags);