diff --git a/drivers/input/keyboard/hil_kbd.c b/drivers/input/keyboard/hil_kbd.c
index adbf29f0169d81f1f5a740243ade99756fc798cb..71c1971abf80873ba4a2a46590483b72428c4098 100644
--- a/drivers/input/keyboard/hil_kbd.c
+++ b/drivers/input/keyboard/hil_kbd.c
@@ -37,6 +37,7 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/init.h>
+#include <linux/semaphore.h>
 #include <linux/slab.h>
 #include <linux/pci_ids.h>
 
diff --git a/drivers/input/misc/hp_sdc_rtc.c b/drivers/input/misc/hp_sdc_rtc.c
index 49d8abfe38fe01c3db1fe0702d125daaf4605e00..daa9d4220331b06e68b9100caad9c5e98065a48f 100644
--- a/drivers/input/misc/hp_sdc_rtc.c
+++ b/drivers/input/misc/hp_sdc_rtc.c
@@ -44,6 +44,7 @@
 #include <linux/proc_fs.h>
 #include <linux/poll.h>
 #include <linux/rtc.h>
+#include <linux/semaphore.h>
 
 MODULE_AUTHOR("Brian S. Julin <bri@calyx.com>");
 MODULE_DESCRIPTION("HP i8042 SDC + MSM-58321 RTC Driver");
diff --git a/drivers/input/serio/hp_sdc.c b/drivers/input/serio/hp_sdc.c
index 7b233a492ad5165aa358f2f63b67831c54a09f7e..aad664d5259fd279a17b2d176aaa91e2db267d2c 100644
--- a/drivers/input/serio/hp_sdc.c
+++ b/drivers/input/serio/hp_sdc.c
@@ -67,6 +67,7 @@
 #include <linux/module.h>
 #include <linux/ioport.h>
 #include <linux/time.h>
+#include <linux/semaphore.h>
 #include <linux/slab.h>
 #include <linux/hil.h>
 #include <linux/semaphore.h>