X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=kernel%2Fdrivers%2Ftty%2Fn_gsm.c;fp=kernel%2Fdrivers%2Ftty%2Fn_gsm.c;h=9aff371862461472f6f7b313a9c0338eba43723e;hb=52f993b8e89487ec9ee15a7fb4979e0f09a45b27;hp=c3fe026d3168dda14e7388472db49abf27544e4f;hpb=c189ccac5702322ed843fe17057035b7222a59b6;p=kvmfornfv.git

diff --git a/kernel/drivers/tty/n_gsm.c b/kernel/drivers/tty/n_gsm.c
index c3fe026d3..9aff37186 100644
--- a/kernel/drivers/tty/n_gsm.c
+++ b/kernel/drivers/tty/n_gsm.c
@@ -2045,7 +2045,9 @@ static void gsm_cleanup_mux(struct gsm_mux *gsm)
 		}
 	}
 	spin_unlock(&gsm_mux_lock);
-	WARN_ON(i == MAX_MUX);
+	/* open failed before registering => nothing to do */
+	if (i == MAX_MUX)
+		return;
 
 	/* In theory disconnecting DLCI 0 is sufficient but for some
 	   modems this is apparently not the case. */