1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/clocksource/acpi_pm.c b/drivers/clocksource/acpi_pm.c
index 066dc77433d5..7ad3be8c0f49 100644
--- a/drivers/clocksource/acpi_pm.c
+++ b/drivers/clocksource/acpi_pm.c
@@ -32,7 +32,7 @@
  */
 u32 pmtmr_ioport __read_mostly;
 
-#define ACPI_PM_MASK 0xFFFFFF /* limit it to 24 bits */
+#define ACPI_PM_MASK CLOCKSOURCE_MASK(24) /* limit it to 24 bits */
 
 static inline u32 read_pmtmr(void)
 {