Merge branch 'mpi-master' into wip-k-fmlpwip-k-fmlp

Conflicts:
	litmus/sched_cedf.c

1 files changed, 56 insertions, 8 deletions

diff --git a/drivers/usb/serial/qcserial.c b/drivers/usb/serial/qcserial.c
index cde67cacb2c3..54a9dab1f33b 100644
--- a/drivers/usb/serial/qcserial.c
+++ b/drivers/usb/serial/qcserial.c
@@ -111,13 +111,15 @@ static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id)
         ifnum = intf->desc.bInterfaceNumber;
         dbg("This Interface = %d", ifnum);
 
-        data = serial->private = kzalloc(sizeof(struct usb_wwan_intf_private),
+        data = kzalloc(sizeof(struct usb_wwan_intf_private),
                                          GFP_KERNEL);
         if (!data)
                 return -ENOMEM;
 
         spin_lock_init(&data->susp_lock);
 
+        usb_enable_autosuspend(serial->dev);
+
         switch (nintf) {
         case 1:
                 /* QDL mode */
@@ -132,8 +134,10 @@ static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id)
                     usb_endpoint_is_bulk_out(&intf->endpoint[1].desc)) {
                         dbg("QDL port found");
 
-                        if (serial->interface->num_altsetting == 1)
-                                return 0;
+                        if (serial->interface->num_altsetting == 1) {
+                                retval = 0; /* Success */
+                                break;
+                        }
 
                         retval = usb_set_interface(serial->dev, ifnum, 1);
                         if (retval < 0) {
@@ -143,14 +147,29 @@ static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id)
                                 retval = -ENODEV;
                                 kfree(data);
                         }
-                        return retval;
                 }
                 break;
 
         case 3:
         case 4:
                 /* Composite mode */
-                if (ifnum == 2) {
+                /* ifnum == 0 is a broadband network adapter */
+                if (ifnum == 1) {
+                        /*
+                         * Diagnostics Monitor (serial line 9600 8N1)
+                         * Qualcomm DM protocol
+                         * use "libqcdm" (ModemManager) for communication
+                         */
+                        dbg("Diagnostics Monitor found");
+                        retval = usb_set_interface(serial->dev, ifnum, 0);
+                        if (retval < 0) {
+                                dev_err(&serial->dev->dev,
+                                        "Could not set interface, error %d\n",
+                                        retval);
+                                retval = -ENODEV;
+                                kfree(data);
+                        }
+                } else if (ifnum == 2) {
                         dbg("Modem port found");
                         retval = usb_set_interface(serial->dev, ifnum, 0);
                         if (retval < 0) {
@@ -160,7 +179,21 @@ static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id)
                                 retval = -ENODEV;
                                 kfree(data);
                         }
-                        return retval;
+                } else if (ifnum==3) {
+                        /*
+                         * NMEA (serial line 9600 8N1)
+                         * # echo "\$GPS_START" > /dev/ttyUSBx
+                         * # echo "\$GPS_STOP"  > /dev/ttyUSBx
+                         */
+                        dbg("NMEA GPS interface found");
+                        retval = usb_set_interface(serial->dev, ifnum, 0);
+                        if (retval < 0) {
+                                dev_err(&serial->dev->dev,
+                                        "Could not set interface, error %d\n",
+                                        retval);
+                                retval = -ENODEV;
+                                kfree(data);
+                        }
                 }
                 break;
 
@@ -168,12 +201,27 @@ static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id)
                 dev_err(&serial->dev->dev,
                         "unknown number of interfaces: %d\n", nintf);
                 kfree(data);
-                return -ENODEV;
+                retval = -ENODEV;
         }
 
+        /* Set serial->private if not returning -ENODEV */
+        if (retval != -ENODEV)
+                usb_set_serial_data(serial, data);
         return retval;
 }
 
+static void qc_release(struct usb_serial *serial)
+{
+        struct usb_wwan_intf_private *priv = usb_get_serial_data(serial);
+
+        dbg("%s", __func__);
+
+        /* Call usb_wwan release & free the private data allocated in qcprobe */
+        usb_wwan_release(serial);
+        usb_set_serial_data(serial, NULL);
+        kfree(priv);
+}
+
 static struct usb_serial_driver qcdevice = {
         .driver = {
                 .owner     = THIS_MODULE,
@@ -191,7 +239,7 @@ static struct usb_serial_driver qcdevice = {
         .chars_in_buffer     = usb_wwan_chars_in_buffer,
         .attach              = usb_wwan_startup,
         .disconnect          = usb_wwan_disconnect,
-        .release             = usb_wwan_release,
+        .release             = qc_release,
 #ifdef CONFIG_PM
         .suspend             = usb_wwan_suspend,
         .resume              = usb_wwan_resume,