Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (45 commits)
  USB: gadget/multi: cdc_do_config: remove redundant check
  usb: r8a66597-hcd: fix removed from an attached hub
  USB: xhci: Make endpoint interval debugging clearer.
  USB: Fix usb_fill_int_urb for SuperSpeed devices
  USB: cp210x: Remove double usb_control_msg from cp210x_set_config
  USB: Remove last bit of CONFIG_USB_BERRY_CHARGE
  USB: gadget: add gadget controller number for s3c-hsotg driver
  USB: ftdi_sio: Fix locking for change_speed() function
  USB: g_mass_storage: fixed module name in Kconfig
  USB: gadget: f_mass_storage::fsg_bind(): fix error handling
  USB: g_mass_storage: fix section mismatch warnings
  USB: gadget: fix Blackfin builds after gadget cleansing
  USB: goku_udc: remove potential null dereference
  USB: option.c: Add Pirelli VID/PID and indicate Pirelli's modem interface is 0xff
  USB: serial: Fix module name typo for qcaux Kconfig entry.
  usb: cdc-wdm: Fix deadlock between write and resume
  usb: cdc-wdm: Fix order in disconnect and fix locking
  usb: cdc-wdm:Fix loss of data due to autosuspend
  usb: cdc-wdm: Fix submission of URB after suspension
  usb: cdc-wdm: Fix race between disconnect and debug messages
  ...

1 files changed, 27 insertions, 22 deletions

diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c
index 89fac36684c5..f804acb138ec 100644
--- a/drivers/usb/serial/generic.c
+++ b/drivers/usb/serial/generic.c
@@ -130,7 +130,7 @@ int usb_serial_generic_open(struct tty_struct *tty, struct usb_serial_port *port
         spin_unlock_irqrestore(&port->lock, flags);
 
         /* if we have a bulk endpoint, start reading from it */
-        if (serial->num_bulk_in) {
+        if (port->bulk_in_size) {
                 /* Start reading from the device */
                 usb_fill_bulk_urb(port->read_urb, serial->dev,
                                    usb_rcvbulkpipe(serial->dev,
@@ -159,10 +159,10 @@ static void generic_cleanup(struct usb_serial_port *port)
         dbg("%s - port %d", __func__, port->number);
 
         if (serial->dev) {
-                /* shutdown any bulk reads that might be going on */
-                if (serial->num_bulk_out)
+                /* shutdown any bulk transfers that might be going on */
+                if (port->bulk_out_size)
                         usb_kill_urb(port->write_urb);
-                if (serial->num_bulk_in)
+                if (port->bulk_in_size)
                         usb_kill_urb(port->read_urb);
         }
 }
@@ -333,15 +333,15 @@ int usb_serial_generic_write(struct tty_struct *tty,
 
         dbg("%s - port %d", __func__, port->number);
 
+        /* only do something if we have a bulk out endpoint */
+        if (!port->bulk_out_size)
+                return -ENODEV;
+
         if (count == 0) {
                 dbg("%s - write request of 0 bytes", __func__);
                 return 0;
         }
 
-        /* only do something if we have a bulk out endpoint */
-        if (!serial->num_bulk_out)
-                return 0;
-
         if (serial->type->max_in_flight_urbs)
                 return usb_serial_multi_urb_write(tty, port,
                                                   buf, count);
@@ -364,14 +364,19 @@ int usb_serial_generic_write_room(struct tty_struct *tty)
         int room = 0;
 
         dbg("%s - port %d", __func__, port->number);
+
+        if (!port->bulk_out_size)
+                return 0;
+
         spin_lock_irqsave(&port->lock, flags);
         if (serial->type->max_in_flight_urbs) {
                 if (port->urbs_in_flight < serial->type->max_in_flight_urbs)
                         room = port->bulk_out_size *
                                 (serial->type->max_in_flight_urbs -
                                  port->urbs_in_flight);
-        } else if (serial->num_bulk_out)
+        } else {
                 room = kfifo_avail(&port->write_fifo);
+        }
         spin_unlock_irqrestore(&port->lock, flags);
 
         dbg("%s - returns %d", __func__, room);
@@ -382,15 +387,18 @@ int usb_serial_generic_chars_in_buffer(struct tty_struct *tty)
 {
         struct usb_serial_port *port = tty->driver_data;
         struct usb_serial *serial = port->serial;
-        int chars = 0;
         unsigned long flags;
+        int chars;
 
         dbg("%s - port %d", __func__, port->number);
 
+        if (!port->bulk_out_size)
+                return 0;
+
         spin_lock_irqsave(&port->lock, flags);
         if (serial->type->max_in_flight_urbs)
                 chars = port->tx_bytes_flight;
-        else if (serial->num_bulk_out)
+        else
                 chars = kfifo_len(&port->write_fifo);
         spin_unlock_irqrestore(&port->lock, flags);
 
@@ -415,11 +423,13 @@ void usb_serial_generic_resubmit_read_urb(struct usb_serial_port *port,
                            ((serial->type->read_bulk_callback) ?
                              serial->type->read_bulk_callback :
                              usb_serial_generic_read_bulk_callback), port);
+
         result = usb_submit_urb(urb, mem_flags);
-        if (result)
+        if (result && result != -EPERM) {
                 dev_err(&port->dev,
                         "%s - failed resubmitting read urb, error %d\n",
                                                         __func__, result);
+        }
 }
 EXPORT_SYMBOL_GPL(usb_serial_generic_resubmit_read_urb);
 
@@ -498,23 +508,18 @@ void usb_serial_generic_write_bulk_callback(struct urb *urb)
                 if (port->urbs_in_flight < 0)
                         port->urbs_in_flight = 0;
                 spin_unlock_irqrestore(&port->lock, flags);
-
-                if (status) {
-                        dbg("%s - nonzero multi-urb write bulk status "
-                                "received: %d", __func__, status);
-                        return;
-                }
         } else {
                 port->write_urb_busy = 0;
 
-                if (status) {
-                        dbg("%s - nonzero multi-urb write bulk status "
-                                "received: %d", __func__, status);
+                if (status)
                         kfifo_reset_out(&port->write_fifo);
-                } else
+                else
                         usb_serial_generic_write_start(port);
         }
 
+        if (status)
+                dbg("%s - non-zero urb status: %d", __func__, status);
+
         usb_serial_port_softint(port);
 }
 EXPORT_SYMBOL_GPL(usb_serial_generic_write_bulk_callback);