[PATCH 2/4] qcserial: log when an interface has too many altsettings

[Thomas Tuttle <ttuttle-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>]

Signed-off-by: Thomas Tuttle <ttuttle-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
---
 drivers/usb/serial/qcserial.c |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/drivers/usb/serial/qcserial.c b/drivers/usb/serial/qcserial.c
index 26e3e30..5a817d6 100644
--- a/drivers/usb/serial/qcserial.c
+++ b/drivers/usb/serial/qcserial.c
@@ -145,8 +145,12 @@ static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id)
 		/* Gobi 2000 has a single altsetting, older ones have two */
 		if (serial->interface->num_altsetting == 2)
 			intf = &serial->interface->altsetting[1];
-		else if (serial->interface->num_altsetting > 2)
+		else if (serial->interface->num_altsetting > 2) {
+			dev_err(&serial->dev->dev,
+				"too many altsettings: %u",
+				serial->interface->num_altsetting);
 			break;
+		}
 
 		if (intf->desc.bNumEndpoints == 2 &&
 		    usb_endpoint_is_bulk_in(&intf->endpoint[0].desc) &&
-- 
1.7.7.3

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