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powerpc/irq: use IS_ENABLED() in check_stack_overflow() 

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

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200220115141.2707-4-mpe@ellerman.id.au
This commit is contained in:
Christophe Leroy 2020-02-20 22:51:40 +11:00 committed by Michael Ellerman
parent 84ab148930
commit 0dec6e1cca
1 changed files with 3 additions and 2 deletions
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5
arch/powerpc/kernel/irq.c
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@ -599,9 +599,11 @@ 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 = current_stack_pointer & (THREAD_SIZE - 1);
/* check for stack overflow: is there less than 2KB free? */
@ -609,7 +611,6 @@ 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)