powerpc/watchdog: Declare soft_nmi_interrupt() prototype

soft_nmi_interrupt() usage requires PPC_WATCHDOG to be configured.
Check the CONFIG definition to declare the prototype.

It fixes this W=1 compile error :

../arch/powerpc/kernel/watchdog.c:250:6: error: no previous prototype for ‘soft_nmi_interrupt’ [-Werror=missing-prototypes]
  250 | void soft_nmi_interrupt(struct pt_regs *regs)
      |      ^~~~~~~~~~~~~~~~~~

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210104143206.695198-18-clg@kaod.org
This commit is contained in:
Cédric Le Goater 2021-01-04 15:32:00 +01:00 committed by Michael Ellerman
parent 1429ff5148
commit 9ae440fb3d
2 changed files with 2 additions and 0 deletions

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@ -4,6 +4,7 @@
#ifdef CONFIG_PPC_WATCHDOG
extern void arch_touch_nmi_watchdog(void);
void soft_nmi_interrupt(struct pt_regs *regs);
#else
static inline void arch_touch_nmi_watchdog(void) {}
#endif

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@ -27,6 +27,7 @@
#include <linux/smp.h>
#include <asm/paca.h>
#include <asm/nmi.h>
/*
* The powerpc watchdog ensures that each CPU is able to service timers.