[PATCH] mISDN: correctly handling failed allocation in fsm

[Insu Yun]

Since kzalloc can be failed in memory pressure,
NULL dereference can be happened.

Signed-off-by: Insu Yun <wuninsu@xxxxxxxxx>
---
 drivers/isdn/mISDN/fsm.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/isdn/mISDN/fsm.c b/drivers/isdn/mISDN/fsm.c
index 26477d4..3c3ffb0 100644
--- a/drivers/isdn/mISDN/fsm.c
+++ b/drivers/isdn/mISDN/fsm.c
@@ -34,6 +34,8 @@ mISDN_FsmNew(struct Fsm *fsm,
 
 	fsm->jumpmatrix = kzalloc(sizeof(FSMFNPTR) * fsm->state_count *
 				  fsm->event_count, GFP_KERNEL);
+	if (!fsm->jumpmatrix)
+		return;
 
 	for (i = 0; i < fncount; i++)
 		if ((fnlist[i].state >= fsm->state_count) ||
-- 
1.9.1

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