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-rw-r--r--drivers/char/hpet.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c
index 091a11cd878c..20dc3be5ecfc 100644
--- a/drivers/char/hpet.c
+++ b/drivers/char/hpet.c
@@ -21,6 +21,7 @@
#include <linux/fcntl.h>
#include <linux/init.h>
#include <linux/poll.h>
+#include <linux/mm.h>
#include <linux/proc_fs.h>
#include <linux/spinlock.h>
#include <linux/sysctl.h>
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