[PATCH v2 2/3] powerpc/irq: use IS_ENABLED() in check_stack_overflow()

[Christophe Leroy]

Instead of #ifdef, use IS_ENABLED(CONFIG_DEBUG_STACKOVERFLOW).
This enable GCC to check for code validity even when the option
is not selected.
---
v2: rebased

Signed-off-by: Christophe Leroy <christophe.le...@c-s.fr>
---
 arch/powerpc/kernel/irq.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index cd29c2eb2d8e..9333e115418f 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -598,9 +598,11 @@ u64 arch_irq_stat_cpu(unsigned int cpu)
 
 static inline void check_stack_overflow(void)
 {
-#ifdef CONFIG_DEBUG_STACKOVERFLOW
        long sp;
 
+       if (!IS_ENABLED(CONFIG_DEBUG_STACKOVERFLOW))
+               return;
+
        sp = get_sp() & (THREAD_SIZE - 1);
 
        /* check for stack overflow: is there less than 2KB free? */
@@ -608,7 +610,6 @@ static inline void check_stack_overflow(void)
                pr_err("do_IRQ: stack overflow: %ld\n", sp);
                dump_stack();
        }
-#endif
 }
 
 void __do_irq(struct pt_regs *regs)
-- 
2.25.0