[PATCH] hpet: Fix struct_size() in kzalloc()

[Tetsuo Handa]

Changing "struct hpet_dev hp_dev[1]" to "struct hpet_dev hp_dev[]"
reduces structure size by sizeof(struct hpet_dev) bytes. We need to
compensate it at struct_size().

Signed-off-by: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx>
Fixes: 987f028b8637cfa7 ("char: hpet: Use flexible-array member")
---
 drivers/char/hpet.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c
index aed2c45f7968..ed3b7dab678d 100644
--- a/drivers/char/hpet.c
+++ b/drivers/char/hpet.c
@@ -855,7 +855,7 @@ int hpet_alloc(struct hpet_data *hdp)
 		return 0;
 	}
 
-	hpetp = kzalloc(struct_size(hpetp, hp_dev, hdp->hd_nirqs - 1),
+	hpetp = kzalloc(struct_size(hpetp, hp_dev, hdp->hd_nirqs),
 			GFP_KERNEL);
 
 	if (!hpetp)
-- 
2.11.0