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path: root/drivers/isdn/mISDN/core.c
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Diffstat (limited to 'drivers/isdn/mISDN/core.c')
-rw-r--r--drivers/isdn/mISDN/core.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/isdn/mISDN/core.c b/drivers/isdn/mISDN/core.c
index a24530f05db..c401634c00e 100644
--- a/drivers/isdn/mISDN/core.c
+++ b/drivers/isdn/mISDN/core.c
@@ -355,6 +355,22 @@ mISDN_unregister_Bprotocol(struct Bprotocol *bp)
}
EXPORT_SYMBOL(mISDN_unregister_Bprotocol);
+static const char *msg_no_channel = "<no channel>";
+static const char *msg_no_stack = "<no stack>";
+static const char *msg_no_stackdev = "<no stack device>";
+
+const char *mISDNDevName4ch(struct mISDNchannel *ch)
+{
+ if (!ch)
+ return msg_no_channel;
+ if (!ch->st)
+ return msg_no_stack;
+ if (!ch->st->dev)
+ return msg_no_stackdev;
+ return dev_name(&ch->st->dev->dev);
+};
+EXPORT_SYMBOL(mISDNDevName4ch);
+
static int
mISDNInit(void)
{