Fix hpet_(un)register_irq_handler() for emulation
Fix hpet_(un)register_irq_handler() for when CONFIG_HPET_EMULATE_RTC=n. They
are provided macros that substitute value 0, but if they are called as
functions and the return value isn't checked, the following warnings appear:
drivers/char/rtc.c: In function `rtc_init':
drivers/char/rtc.c:1063: warning: statement with no effect
drivers/char/rtc.c: In function `rtc_exit':
drivers/char/rtc.c:1157: warning: statement with no effect
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/char/rtc.c b/drivers/char/rtc.c
index 78b151c..5c3142b 100644
--- a/drivers/char/rtc.c
+++ b/drivers/char/rtc.c
@@ -110,8 +110,8 @@
#define hpet_set_rtc_irq_bit(arg) 0
#define hpet_rtc_timer_init() do { } while (0)
#define hpet_rtc_dropped_irq() 0
-#define hpet_register_irq_handler(h) 0
-#define hpet_unregister_irq_handler(h) 0
+#define hpet_register_irq_handler(h) ({ 0; })
+#define hpet_unregister_irq_handler(h) ({ 0; })
#ifdef RTC_IRQ
static irqreturn_t hpet_rtc_interrupt(int irq, void *dev_id)
{