From: Nick Pelly <npelly@google.com>
Date: Fri, 20 Aug 2010 02:27:10 +0000 (-0700)
Subject: mdm6600: Don't panic on wrong port.
X-Git-Tag: firefly_0821_release~9834^2~679
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=e6a9d0cc99a8e77c020dc7d7f1058bf76e93902c;p=firefly-linux-kernel-4.4.55.git

mdm6600: Don't panic on wrong port.

Lack of power management on the mdm6600 driver causes it to sometimes
open with a bad port after USB re-unemeration. WARN_ON_ONCE instead of
BUG_ON.

Change-Id: Iae6c7aa2c1f2b30ff879a1b744a5efeef01664f9
Signed-off-by: Nick Pelly <npelly@google.com>
---

diff --git a/drivers/usb/serial/mdm6600.c b/drivers/usb/serial/mdm6600.c
index 6b03d86f4d04..3a1f32db30c4 100644
--- a/drivers/usb/serial/mdm6600.c
+++ b/drivers/usb/serial/mdm6600.c
@@ -227,12 +227,12 @@ static int mdm6600_open(struct tty_struct *tty, struct usb_serial_port *port)
 
 	dbg("%s: port %d", __func__, port->number);
 
-	BUG_ON(modem->port != port);
+	WARN_ON_ONCE(modem->port != port);
 
 	modem->tiocm_status = 0;
 
 	if (port->number == MODEM_INTERFACE_NUM) {
-		BUG_ON(!port->interrupt_in_urb);
+		WARN_ON_ONCE(!port->interrupt_in_urb);
 		rc = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
 		if (rc) {
 			dev_err(&port->dev,