[ 16/75] qcserial: bind to DM/DIAG port on Gobi 1K devices

Greg Kroah-Hartman
2013-03-18T22:01:22Z

From: Dan Williams <dcbw@redhat.com>

commit 3f8bc5e4da29c7e05edeca6b475abb4fb01a5a13 upstream.

Turns out we just need altsetting 1 and then we can talk to it.

Signed-off-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/usb/serial/qcserial.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)

--- a/drivers/usb/serial/qcserial.c
+++ b/drivers/usb/serial/qcserial.c
@@ -197,12 +197,15 @@ static int qcprobe(struct usb_serial *se

if (is_gobi1k) {
/* Gobi 1K USB layout:
- * 0: serial port (doesn't respond)
+ * 0: DM/DIAG (use libqcdm from ModemManager for communication)
* 1: serial port (doesn't respond)
* 2: AT-capable modem port
* 3: QMI/net
*/
- if (ifnum == 2)
+ if (ifnum == 0) {
+ dev_dbg(dev, "Gobi 1K DM/DIAG interface found\n");
+ altsetting = 1;
+ } else if (ifnum == 2)
dev_dbg(dev, "Modem port found\n");
else
altsetting = -1;