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-rw-r--r--drivers/isdn/hisax/isdnl1.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/isdn/hisax/isdnl1.h b/drivers/isdn/hisax/isdnl1.h
index 172ad4c8c961..425d86116f2b 100644
--- a/drivers/isdn/hisax/isdnl1.h
+++ b/drivers/isdn/hisax/isdnl1.h
@@ -21,6 +21,7 @@
#define B_XMTBUFREADY 1
#define B_ACKPENDING 2
+__attribute__((format(printf, 2, 3)))
void debugl1(struct IsdnCardState *cs, char *fmt, ...);
void DChannel_proc_xmt(struct IsdnCardState *cs);
void DChannel_proc_rcv(struct IsdnCardState *cs);
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