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-rw-r--r--arch/s390/kernel/irq.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/kernel/irq.c b/arch/s390/kernel/irq.c
index b55af916fbd5..a1af5ecdabdf 100644
--- a/arch/s390/kernel/irq.c
+++ b/arch/s390/kernel/irq.c
@@ -110,7 +110,7 @@ static int on_async_stack(void)
{
unsigned long frame = current_frame_address();
- return !!!((S390_lowcore.async_stack - frame) >> (PAGE_SHIFT + THREAD_SIZE_ORDER));
+ return ((S390_lowcore.async_stack ^ frame) & ~(THREAD_SIZE - 1)) == 0;
}
static void do_irq_async(struct pt_regs *regs, int irq)