USB: serial: remove unnecessary reinitialisations of urb->dev

Remove unnecessary reinitialisations of urb->dev before each submission,
which were based on the (no longer valid) assumption that serial->dev
will be set to NULL on close.

Compile-only tested.

Cc: Matthias Bruestle and Harald Welte <support@reiner-sct.com>
Cc: Lonnie Mendez <dignome@gmail.com>
Cc: Peter Berger <pberger@brimson.com>
Cc: Al Borchers <alborchers@steinerpoint.com>
Cc: Support Department <support@connecttech.com>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

20 files changed, 8 insertions, 107 deletions

diff --git a/drivers/usb/serial/ch341.c b/drivers/usb/serial/ch341.c
index 6ae1c0688b5e..8607f1522ef3 100644
--- a/drivers/usb/serial/ch341.c
+++ b/drivers/usb/serial/ch341.c
@@ -335,7 +335,6 @@ static int ch341_open(struct tty_struct *tty, struct usb_serial_port *port)
                 goto out;
 
         dbg("%s - submitting interrupt urb", __func__);
-        port->interrupt_in_urb->dev = serial->dev;
         r = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
         if (r) {
                 dev_err(&port->dev, "%s - failed submitting interrupt urb,"
diff --git a/drivers/usb/serial/cyberjack.c b/drivers/usb/serial/cyberjack.c
index 5a41252807cb..2b220e811bf1 100644
--- a/drivers/usb/serial/cyberjack.c
+++ b/drivers/usb/serial/cyberjack.c
@@ -138,7 +138,6 @@ static int cyberjack_startup(struct usb_serial *serial)
 
         for (i = 0; i < serial->num_ports; ++i) {
                 int result;
-                serial->port[i]->interrupt_in_urb->dev = serial->dev;
                 result = usb_submit_urb(serial->port[i]->interrupt_in_urb,
                                         GFP_KERNEL);
                 if (result)
@@ -347,7 +346,6 @@ static void cyberjack_read_int_callback(struct urb *urb)
                 spin_unlock(&priv->lock);
 
                 if (!old_rdtodo) {
-                        port->read_urb->dev = port->serial->dev;
                         result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
                         if (result)
                                 dev_err(&port->dev, "%s - failed resubmitting "
@@ -358,7 +356,6 @@ static void cyberjack_read_int_callback(struct urb *urb)
         }
 
 resubmit:
-        port->interrupt_in_urb->dev = port->serial->dev;
         result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
         if (result)
                 dev_err(&port->dev, "usb_submit_urb(read int) failed\n");
@@ -411,7 +408,6 @@ static void cyberjack_read_bulk_callback(struct urb *urb)
 
         /* Continue to read if we have still urbs to do. */
         if (todo /* || (urb->actual_length==port->bulk_in_endpointAddress)*/) {
-                port->read_urb->dev = port->serial->dev;
                 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
                 if (result)
                         dev_err(&port->dev, "%s - failed resubmitting read "
diff --git a/drivers/usb/serial/cypress_m8.c b/drivers/usb/serial/cypress_m8.c
index b20440e58d8f..07680d6b792b 100644
--- a/drivers/usb/serial/cypress_m8.c
+++ b/drivers/usb/serial/cypress_m8.c
@@ -1136,8 +1136,6 @@ static void cypress_unthrottle(struct tty_struct *tty)
                 return;
 
         if (actually_throttled) {
-                port->interrupt_in_urb->dev = port->serial->dev;
-
                 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
                 if (result) {
                         dev_err(&port->dev, "%s - failed submitting read urb, "
@@ -1326,7 +1324,6 @@ static void cypress_write_int_callback(struct urb *urb)
                 dbg("%s - nonzero write bulk status received: %d",
                         __func__, status);
                 port->interrupt_out_urb->transfer_buffer_length = 1;
-                port->interrupt_out_urb->dev = port->serial->dev;
                 result = usb_submit_urb(port->interrupt_out_urb, GFP_ATOMIC);
                 if (!result)
                         return;
diff --git a/drivers/usb/serial/digi_acceleport.c b/drivers/usb/serial/digi_acceleport.c
index 3786e9544ae0..6d26a77d0f2a 100644
--- a/drivers/usb/serial/digi_acceleport.c
+++ b/drivers/usb/serial/digi_acceleport.c
@@ -438,7 +438,6 @@ static int digi_write_oob_command(struct usb_serial_port *port,
                         len &= ~3;
                 memcpy(oob_port->write_urb->transfer_buffer, buf, len);
                 oob_port->write_urb->transfer_buffer_length = len;
-                oob_port->write_urb->dev = port->serial->dev;
                 ret = usb_submit_urb(oob_port->write_urb, GFP_ATOMIC);
                 if (ret == 0) {
                         oob_priv->dp_write_urb_in_use = 1;
@@ -516,7 +515,6 @@ static int digi_write_inb_command(struct usb_serial_port *port,
                         memcpy(data, buf, len);
                         port->write_urb->transfer_buffer_length = len;
                 }
-                port->write_urb->dev = port->serial->dev;
 
                 ret = usb_submit_urb(port->write_urb, GFP_ATOMIC);
                 if (ret == 0) {
@@ -587,7 +585,6 @@ static int digi_set_modem_signals(struct usb_serial_port *port,
         data[7] = 0;
 
         oob_port->write_urb->transfer_buffer_length = 8;
-        oob_port->write_urb->dev = port->serial->dev;
 
         ret = usb_submit_urb(oob_port->write_urb, GFP_ATOMIC);
         if (ret == 0) {
@@ -683,10 +680,8 @@ static void digi_rx_unthrottle(struct tty_struct *tty)
         spin_lock_irqsave(&priv->dp_port_lock, flags);
 
         /* restart read chain */
-        if (priv->dp_throttle_restart) {
-                port->read_urb->dev = port->serial->dev;
+        if (priv->dp_throttle_restart)
                 ret = usb_submit_urb(port->read_urb, GFP_ATOMIC);
-        }
 
         /* turn throttle off */
         priv->dp_throttled = 0;
@@ -979,7 +974,6 @@ static int digi_write(struct tty_struct *tty, struct usb_serial_port *port,
         }
 
         port->write_urb->transfer_buffer_length = data_len+2;
-        port->write_urb->dev = port->serial->dev;
 
         *data++ = DIGI_CMD_SEND_DATA;
         *data++ = data_len;
@@ -1055,7 +1049,6 @@ static void digi_write_bulk_callback(struct urb *urb)
                         = (unsigned char)priv->dp_out_buf_len;
                 port->write_urb->transfer_buffer_length =
                                                 priv->dp_out_buf_len + 2;
-                port->write_urb->dev = serial->dev;
                 memcpy(port->write_urb->transfer_buffer + 2, priv->dp_out_buf,
                         priv->dp_out_buf_len);
                 ret = usb_submit_urb(port->write_urb, GFP_ATOMIC);
@@ -1257,7 +1250,6 @@ static int digi_startup_device(struct usb_serial *serial)
         /* set USB_DISABLE_SPD flag for write bulk urbs */
         for (i = 0; i < serial->type->num_ports + 1; i++) {
                 port = serial->port[i];
-                port->write_urb->dev = port->serial->dev;
                 ret = usb_submit_urb(port->read_urb, GFP_KERNEL);
                 if (ret != 0) {
                         dev_err(&port->dev,
@@ -1400,7 +1392,6 @@ static void digi_read_bulk_callback(struct urb *urb)
         }
 
         /* continue read */
-        urb->dev = port->serial->dev;
         ret = usb_submit_urb(urb, GFP_ATOMIC);
         if (ret != 0 && ret != -EPERM) {
                 dev_err(&port->dev,
diff --git a/drivers/usb/serial/garmin_gps.c b/drivers/usb/serial/garmin_gps.c
index 1a49ca9c8ea5..d39da13d3dba 100644
--- a/drivers/usb/serial/garmin_gps.c
+++ b/drivers/usb/serial/garmin_gps.c
@@ -901,7 +901,6 @@ static int garmin_init_session(struct usb_serial_port *port)
                 usb_kill_urb(port->interrupt_in_urb);
 
                 dbg("%s - adding interrupt input", __func__);
-                port->interrupt_in_urb->dev = serial->dev;
                 status = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
                 if (status)
                         dev_err(&serial->dev->dev,
@@ -1353,7 +1352,6 @@ static void garmin_read_int_callback(struct urb *urb)
 
         garmin_read_process(garmin_data_p, data, urb->actual_length, 0);
 
-        port->interrupt_in_urb->dev = port->serial->dev;
         retval = usb_submit_urb(urb, GFP_ATOMIC);
         if (retval)
                 dev_err(&urb->dev->dev,
diff --git a/drivers/usb/serial/io_edgeport.c b/drivers/usb/serial/io_edgeport.c
index 2ee807523f53..abd2ee2b2f99 100644
--- a/drivers/usb/serial/io_edgeport.c
+++ b/drivers/usb/serial/io_edgeport.c
@@ -610,7 +610,6 @@ static void edge_interrupt_callback(struct urb *urb)
 
                                         /* we have pending bytes on the
                                            bulk in pipe, send a request */
-                                        edge_serial->read_urb->dev = edge_serial->serial->dev;
                                         result = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
                                         if (result) {
                                                 dev_err(&edge_serial->serial->dev->dev, "%s - usb_submit_urb(read bulk) failed with result = %d\n", __func__, result);
@@ -711,7 +710,6 @@ static void edge_bulk_in_callback(struct urb *urb)
         /* check to see if there's any more data for us to read */
         if (edge_serial->rxBytesAvail > 0) {
                 dbg("%s - posting a read", __func__);
-                edge_serial->read_urb->dev = edge_serial->serial->dev;
                 retval = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
                 if (retval) {
                         dev_err(&urb->dev->dev,
@@ -1330,7 +1328,6 @@ static void send_more_port_data(struct edgeport_serial *edge_serial,
         edge_port->txCredits -= count;
         edge_port->icount.tx += count;
 
-        urb->dev = edge_serial->serial->dev;
         status = usb_submit_urb(urb, GFP_ATOMIC);
         if (status) {
                 /* something went wrong */
diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c
index e42ddfc02aaa..29fba8ccf8e2 100644
--- a/drivers/usb/serial/io_ti.c
+++ b/drivers/usb/serial/io_ti.c
@@ -1770,12 +1770,11 @@ static void edge_bulk_in_callback(struct urb *urb)
 exit:
         /* continue read unless stopped */
         spin_lock(&edge_port->ep_lock);
-        if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) {
-                urb->dev = edge_port->port->serial->dev;
+        if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
                 retval = usb_submit_urb(urb, GFP_ATOMIC);
-        } else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING) {
+        else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING)
                 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED;
-        }
+
         spin_unlock(&edge_port->ep_lock);
         if (retval)
                 dev_err(&urb->dev->dev,
@@ -1954,7 +1953,6 @@ static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
                 }
                 urb->complete = edge_interrupt_callback;
                 urb->context = edge_serial;
-                urb->dev = dev;
                 status = usb_submit_urb(urb, GFP_KERNEL);
                 if (status) {
                         dev_err(&port->dev,
@@ -1982,7 +1980,6 @@ static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
         edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
         urb->complete = edge_bulk_in_callback;
         urb->context = edge_port;
-        urb->dev = dev;
         status = usb_submit_urb(urb, GFP_KERNEL);
         if (status) {
                 dev_err(&port->dev,
@@ -2262,7 +2259,6 @@ static int restart_read(struct edgeport_port *edge_port)
                 urb = edge_port->port->read_urb;
                 urb->complete = edge_bulk_in_callback;
                 urb->context = edge_port;
-                urb->dev = edge_port->port->serial->dev;
                 status = usb_submit_urb(urb, GFP_ATOMIC);
         }
         edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
diff --git a/drivers/usb/serial/keyspan.c b/drivers/usb/serial/keyspan.c
index 65356620c253..bc8dc203e818 100644
--- a/drivers/usb/serial/keyspan.c
+++ b/drivers/usb/serial/keyspan.c
@@ -330,7 +330,6 @@ static int keyspan_write(struct tty_struct *tty,
                 /* send the data out the bulk port */
                 this_urb->transfer_buffer_length = todo + dataOffset;
 
-                this_urb->dev = port->serial->dev;
                 err = usb_submit_urb(this_urb, GFP_ATOMIC);
                 if (err != 0)
                         dbg("usb_submit_urb(write bulk) failed (%d)", err);
@@ -396,7 +395,6 @@ static void	usa26_indat_callback(struct urb *urb)
         tty_kref_put(tty);
 
         /* Resubmit urb so we continue receiving */
-        urb->dev = port->serial->dev;
         err = usb_submit_urb(urb, GFP_ATOMIC);
         if (err != 0)
                 dbg("%s - resubmit read urb failed. (%d)", __func__, err);
@@ -492,7 +490,6 @@ static void	usa26_instat_callback(struct urb *urb)
         }
 
         /* Resubmit urb so we continue receiving */
-        urb->dev = serial->dev;
         err = usb_submit_urb(urb, GFP_ATOMIC);
         if (err != 0)
                 dbg("%s - resubmit read urb failed. (%d)", __func__, err);
@@ -542,7 +539,6 @@ static void usa28_indat_callback(struct urb *urb)
                 tty_kref_put(tty);
 
                 /* Resubmit urb so we continue receiving */
-                urb->dev = port->serial->dev;
                 err = usb_submit_urb(urb, GFP_ATOMIC);
                 if (err != 0)
                         dbg("%s - resubmit read urb failed. (%d)",
@@ -627,7 +623,6 @@ static void	usa28_instat_callback(struct urb *urb)
         }
 
                 /* Resubmit urb so we continue receiving */
-        urb->dev = serial->dev;
         err = usb_submit_urb(urb, GFP_ATOMIC);
         if (err != 0)
                 dbg("%s - resubmit read urb failed. (%d)", __func__, err);
@@ -722,8 +717,6 @@ static void	usa49_instat_callback(struct urb *urb)
         }
 
         /* Resubmit urb so we continue receiving */
-        urb->dev = serial->dev;
-
         err = usb_submit_urb(urb, GFP_ATOMIC);
         if (err != 0)
                 dbg("%s - resubmit read urb failed. (%d)", __func__, err);
@@ -781,7 +774,6 @@ static void	usa49_indat_callback(struct urb *urb)
         tty_kref_put(tty);
 
         /* Resubmit urb so we continue receiving */
-        urb->dev = port->serial->dev;
         err = usb_submit_urb(urb, GFP_ATOMIC);
         if (err != 0)
                 dbg("%s - resubmit read urb failed. (%d)", __func__, err);
@@ -852,8 +844,6 @@ static void usa49wg_indat_callback(struct urb *urb)
         }
 
         /* Resubmit urb so we continue receiving */
-        urb->dev = serial->dev;
-
         err = usb_submit_urb(urb, GFP_ATOMIC);
         if (err != 0)
                 dbg("%s - resubmit read urb failed. (%d)", __func__, err);
@@ -929,7 +919,6 @@ static void usa90_indat_callback(struct urb *urb)
         }
 
         /* Resubmit urb so we continue receiving */
-        urb->dev = port->serial->dev;
         err = usb_submit_urb(urb, GFP_ATOMIC);
         if (err != 0)
                 dbg("%s - resubmit read urb failed. (%d)", __func__, err);
@@ -980,7 +969,6 @@ static void	usa90_instat_callback(struct urb *urb)
         }
 
         /* Resubmit urb so we continue receiving */
-        urb->dev = serial->dev;
         err = usb_submit_urb(urb, GFP_ATOMIC);
         if (err != 0)
                 dbg("%s - resubmit read urb failed. (%d)", __func__, err);
@@ -1056,7 +1044,6 @@ static void	usa67_instat_callback(struct urb *urb)
         }
 
         /* Resubmit urb so we continue receiving */
-        urb->dev = serial->dev;
         err = usb_submit_urb(urb, GFP_ATOMIC);
         if (err != 0)
                 dbg("%s - resubmit read urb failed. (%d)", __func__, err);
@@ -1156,7 +1143,6 @@ static int keyspan_open(struct tty_struct *tty, struct usb_serial_port *port)
                 urb = p_priv->in_urbs[i];
                 if (urb == NULL)
                         continue;
-                urb->dev = serial->dev;
 
                 /* make sure endpoint data toggle is synchronized
                    with the device */
@@ -1172,7 +1158,6 @@ static int keyspan_open(struct tty_struct *tty, struct usb_serial_port *port)
                 urb = p_priv->out_urbs[i];
                 if (urb == NULL)
                         continue;
-                urb->dev = serial->dev;
                 /* usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
                                                 usb_pipeout(urb->pipe), 0); */
         }
@@ -1889,7 +1874,6 @@ static int keyspan_usa26_send_setup(struct usb_serial *serial,
         /* send the data out the device on control endpoint */
         this_urb->transfer_buffer_length = sizeof(msg);
 
-        this_urb->dev = serial->dev;
         err = usb_submit_urb(this_urb, GFP_ATOMIC);
         if (err != 0)
                 dbg("%s - usb_submit_urb(setup) failed (%d)", __func__, err);
@@ -2017,7 +2001,6 @@ static int keyspan_usa28_send_setup(struct usb_serial *serial,
         /* send the data out the device on control endpoint */
         this_urb->transfer_buffer_length = sizeof(msg);
 
-        this_urb->dev = serial->dev;
         err = usb_submit_urb(this_urb, GFP_ATOMIC);
         if (err != 0)
                 dbg("%s - usb_submit_urb(setup) failed", __func__);
@@ -2204,8 +2187,6 @@ static int keyspan_usa49_send_setup(struct usb_serial *serial,
 
                 /* send the data out the device on control endpoint */
                 this_urb->transfer_buffer_length = sizeof(msg);
-
-                this_urb->dev = serial->dev;
         }
         err = usb_submit_urb(this_urb, GFP_ATOMIC);
         if (err != 0)
@@ -2348,7 +2329,6 @@ static int keyspan_usa90_send_setup(struct usb_serial *serial,
         /* send the data out the device on control endpoint */
         this_urb->transfer_buffer_length = sizeof(msg);
 
-        this_urb->dev = serial->dev;
         err = usb_submit_urb(this_urb, GFP_ATOMIC);
         if (err != 0)
                 dbg("%s - usb_submit_urb(setup) failed (%d)", __func__, err);
@@ -2494,7 +2474,6 @@ static int keyspan_usa67_send_setup(struct usb_serial *serial,
 
         /* send the data out the device on control endpoint */
         this_urb->transfer_buffer_length = sizeof(msg);
-        this_urb->dev = serial->dev;
 
         err = usb_submit_urb(this_urb, GFP_ATOMIC);
         if (err != 0)
@@ -2583,14 +2562,12 @@ static int keyspan_startup(struct usb_serial *serial)
         keyspan_setup_urbs(serial);
 
         if (s_priv->instat_urb != NULL) {
-                s_priv->instat_urb->dev = serial->dev;
                 err = usb_submit_urb(s_priv->instat_urb, GFP_KERNEL);
                 if (err != 0)
                         dbg("%s - submit instat urb failed %d", __func__,
                                 err);
         }
         if (s_priv->indat_urb != NULL) {
-                s_priv->indat_urb->dev = serial->dev;
                 err = usb_submit_urb(s_priv->indat_urb, GFP_KERNEL);
                 if (err != 0)
                         dbg("%s - submit indat urb failed %d", __func__,
diff --git a/drivers/usb/serial/keyspan_pda.c b/drivers/usb/serial/keyspan_pda.c
index 9428cc0cfb12..a40615674a68 100644
--- a/drivers/usb/serial/keyspan_pda.c
+++ b/drivers/usb/serial/keyspan_pda.c
@@ -237,7 +237,6 @@ static void keyspan_pda_rx_unthrottle(struct tty_struct *tty)
         struct usb_serial_port *port = tty->driver_data;
         /* just restart the receive interrupt URB */
         dbg("keyspan_pda_rx_unthrottle port %d", port->number);
-        port->interrupt_in_urb->dev = port->serial->dev;
         if (usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL))
                 dbg(" usb_submit_urb(read urb) failed");
 }
@@ -545,7 +544,6 @@ static int keyspan_pda_write(struct tty_struct *tty,
 
                 priv->tx_room -= count;
 
-                port->write_urb->dev = port->serial->dev;
                 rc = usb_submit_urb(port->write_urb, GFP_ATOMIC);
                 if (rc) {
                         dbg(" usb_submit_urb(write bulk) failed");
@@ -664,7 +662,6 @@ static int keyspan_pda_open(struct tty_struct *tty,
         priv->tx_throttled = *room ? 0 : 1;
 
         /*Start reading from the device*/
-        port->interrupt_in_urb->dev = serial->dev;
         rc = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
         if (rc) {
                 dbg("%s - usb_submit_urb(read int) failed", __func__);
diff --git a/drivers/usb/serial/kobil_sct.c b/drivers/usb/serial/kobil_sct.c
index 2ecfc0101a4c..5d3beeeb5fd9 100644
--- a/drivers/usb/serial/kobil_sct.c
+++ b/drivers/usb/serial/kobil_sct.c
@@ -219,9 +219,6 @@ static int kobil_open(struct tty_struct *tty, struct usb_serial_port *port)
         dbg("%s - port %d", __func__, port->number);
         priv = usb_get_serial_port_data(port);
 
-        /* someone sets the dev to 0 if the close method has been called */
-        port->interrupt_in_urb->dev = port->serial->dev;
-
         /* allocate memory for transfer buffer */
         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
         if (!transfer_buffer)
@@ -381,8 +378,6 @@ static void kobil_read_int_callback(struct urb *urb)
                 tty_flip_buffer_push(tty);
         }
         tty_kref_put(tty);
-        /* someone sets the dev to 0 if the close method has been called */
-        port->interrupt_in_urb->dev = port->serial->dev;
 
         result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
         dbg("%s - port %d Send read URB returns: %i",
@@ -463,17 +458,9 @@ static int kobil_write(struct tty_struct *tty, struct usb_serial_port *port,
                 priv->filled = 0;
                 priv->cur_pos = 0;
 
-                /* someone sets the dev to 0 if the close method
-                   has been called */
-                port->interrupt_in_urb->dev = port->serial->dev;
-
                 /* start reading (except TWIN and KAAN SIM) */
                 if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
                         priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
-                        /* someone sets the dev to 0 if the close method has
-                           been called */
-                        port->interrupt_in_urb->dev = port->serial->dev;
-
                         result = usb_submit_urb(port->interrupt_in_urb,
                                                                 GFP_NOIO);
                         dbg("%s - port %d Send read URB returns: %i",
diff --git a/drivers/usb/serial/mct_u232.c b/drivers/usb/serial/mct_u232.c
index 6804efeb9456..a975bb80303f 100644
--- a/drivers/usb/serial/mct_u232.c
+++ b/drivers/usb/serial/mct_u232.c
@@ -482,7 +482,6 @@ static int  mct_u232_open(struct tty_struct *tty, struct usb_serial_port *port)
         mct_u232_msr_to_state(&priv->control_state, priv->last_msr);
         spin_unlock_irqrestore(&priv->lock, flags);
 
-        port->read_urb->dev = port->serial->dev;
         retval = usb_submit_urb(port->read_urb, GFP_KERNEL);
         if (retval) {
                 dev_err(&port->dev,
@@ -491,7 +490,6 @@ static int  mct_u232_open(struct tty_struct *tty, struct usb_serial_port *port)
                 goto error;
         }
 
-        port->interrupt_in_urb->dev = port->serial->dev;
         retval = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
         if (retval) {
                 usb_kill_urb(port->read_urb);
diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c
index 51b56b0c4228..19d112f51b97 100644
--- a/drivers/usb/serial/mos7720.c
+++ b/drivers/usb/serial/mos7720.c
@@ -940,8 +940,6 @@ static void mos7720_bulk_in_callback(struct urb *urb)
         tty_kref_put(tty);
 
         if (port->read_urb->status != -EINPROGRESS) {
-                port->read_urb->dev = port->serial->dev;
-
                 retval = usb_submit_urb(port->read_urb, GFP_ATOMIC);
                 if (retval)
                         dbg("usb_submit_urb(read bulk) failed, retval = %d",
@@ -1727,8 +1725,6 @@ static void change_port_settings(struct tty_struct *tty,
         write_mos_reg(serial, port_number, IER, 0x0c);
 
         if (port->read_urb->status != -EINPROGRESS) {
-                port->read_urb->dev = serial->dev;
-
                 status = usb_submit_urb(port->read_urb, GFP_ATOMIC);
                 if (status)
                         dbg("usb_submit_urb(read bulk) failed, status = %d",
@@ -1779,7 +1775,6 @@ static void mos7720_set_termios(struct tty_struct *tty,
         change_port_settings(tty, mos7720_port, old_termios);
 
         if (port->read_urb->status != -EINPROGRESS) {
-                port->read_urb->dev = serial->dev;
                 status = usb_submit_urb(port->read_urb, GFP_ATOMIC);
                 if (status)
                         dbg("usb_submit_urb(read bulk) failed, status = %d",
diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c
index c72abd524983..55cfd6265b98 100644
--- a/drivers/usb/serial/mos7840.c
+++ b/drivers/usb/serial/mos7840.c
@@ -792,8 +792,6 @@ static void mos7840_bulk_in_callback(struct urb *urb)
         }
 
 
-        mos7840_port->read_urb->dev = serial->dev;
-
         mos7840_port->read_urb_busy = true;
         retval = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC);
 
@@ -2058,7 +2056,6 @@ static void mos7840_change_port_settings(struct tty_struct *tty,
         mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data);
 
         if (mos7840_port->read_urb_busy == false) {
-                mos7840_port->read_urb->dev = serial->dev;
                 mos7840_port->read_urb_busy = true;
                 status = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC);
                 if (status) {
@@ -2130,7 +2127,6 @@ static void mos7840_set_termios(struct tty_struct *tty,
         }
 
         if (mos7840_port->read_urb_busy == false) {
-                mos7840_port->read_urb->dev = serial->dev;
                 mos7840_port->read_urb_busy = true;
                 status = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC);
                 if (status) {
diff --git a/drivers/usb/serial/omninet.c b/drivers/usb/serial/omninet.c
index 1594bde8f9b3..f3824641099a 100644
--- a/drivers/usb/serial/omninet.c
+++ b/drivers/usb/serial/omninet.c
@@ -154,6 +154,7 @@ static int omninet_open(struct tty_struct *tty, struct usb_serial_port *port)
                         port->read_urb->transfer_buffer,
                         port->read_urb->transfer_buffer_length,
                         omninet_read_bulk_callback, port);
+
         result = usb_submit_urb(port->read_urb, GFP_KERNEL);
         if (result)
                 dev_err(&port->dev,
@@ -262,7 +263,6 @@ static int omninet_write(struct tty_struct *tty, struct usb_serial_port *port,
         /* send the data out the bulk port, always 64 bytes */
         wport->write_urb->transfer_buffer_length = 64;
 
-        wport->write_urb->dev = serial->dev;
         result = usb_submit_urb(wport->write_urb, GFP_ATOMIC);
         if (result) {
                 set_bit(0, &wport->write_urbs_free);
diff --git a/drivers/usb/serial/opticon.c b/drivers/usb/serial/opticon.c
index c248a9147439..691f57a9d712 100644
--- a/drivers/usb/serial/opticon.c
+++ b/drivers/usb/serial/opticon.c
@@ -384,7 +384,6 @@ static void opticon_unthrottle(struct tty_struct *tty)
         priv->actually_throttled = false;
         spin_unlock_irqrestore(&priv->lock, flags);
 
-        priv->bulk_read_urb->dev = port->serial->dev;
         if (was_throttled) {
                 result = usb_submit_urb(priv->bulk_read_urb, GFP_ATOMIC);
                 if (result)
diff --git a/drivers/usb/serial/oti6858.c b/drivers/usb/serial/oti6858.c
index 4c29e6c2bda7..2bc1c1a44a75 100644
--- a/drivers/usb/serial/oti6858.c
+++ b/drivers/usb/serial/oti6858.c
@@ -264,7 +264,6 @@ static void setup_line(struct work_struct *work)
         spin_unlock_irqrestore(&priv->lock, flags);
 
         dbg("%s(): submitting interrupt urb", __func__);
-        port->interrupt_in_urb->dev = port->serial->dev;
         result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
         if (result != 0) {
                 dev_err(&port->dev, "%s(): usb_submit_urb() failed"
@@ -321,7 +320,6 @@ static void send_data(struct work_struct *work)
                 priv->flags.write_urb_in_use = 0;
 
                 dbg("%s(): submitting interrupt urb", __func__);
-                port->interrupt_in_urb->dev = port->serial->dev;
                 result = usb_submit_urb(port->interrupt_in_urb, GFP_NOIO);
                 if (result != 0) {
                         dev_err(&port->dev, "%s(): usb_submit_urb() failed"
@@ -334,7 +332,6 @@ static void send_data(struct work_struct *work)
                                         port->write_urb->transfer_buffer,
                                         count, &port->lock);
         port->write_urb->transfer_buffer_length = count;
-        port->write_urb->dev = port->serial->dev;
         result = usb_submit_urb(port->write_urb, GFP_NOIO);
         if (result != 0) {
                 dev_err(&port->dev, "%s(): usb_submit_urb() failed"
@@ -583,7 +580,6 @@ static int oti6858_open(struct tty_struct *tty, struct usb_serial_port *port)
         kfree(buf);
 
         dbg("%s(): submitting interrupt urb", __func__);
-        port->interrupt_in_urb->dev = serial->dev;
         result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
         if (result != 0) {
                 dev_err(&port->dev, "%s(): usb_submit_urb() failed"
@@ -837,7 +833,6 @@ static void oti6858_read_int_callback(struct urb *urb)
         if (can_recv) {
                 int result;
 
-                port->read_urb->dev = port->serial->dev;
                 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
                 if (result != 0) {
                         priv->flags.read_urb_in_use = 0;
@@ -866,7 +861,6 @@ static void oti6858_read_int_callback(struct urb *urb)
                 int result;
 
 /*              dbg("%s(): submitting interrupt urb", __func__); */
-                urb->dev = port->serial->dev;
                 result = usb_submit_urb(urb, GFP_ATOMIC);
                 if (result != 0) {
                         dev_err(&urb->dev->dev,
@@ -918,7 +912,6 @@ static void oti6858_read_bulk_callback(struct urb *urb)
         tty_kref_put(tty);
 
         /* schedule the interrupt urb */
-        port->interrupt_in_urb->dev = port->serial->dev;
         result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
         if (result != 0 && result != -EPERM) {
                 dev_err(&port->dev, "%s(): usb_submit_urb() failed,"
@@ -955,7 +948,6 @@ static void oti6858_write_bulk_callback(struct urb *urb)
                 dbg("%s(): overflow in write", __func__);
 
                 port->write_urb->transfer_buffer_length = 1;
-                port->write_urb->dev = port->serial->dev;
                 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
                 if (result) {
                         dev_err(&port->dev, "%s(): usb_submit_urb() failed,"
@@ -968,7 +960,6 @@ static void oti6858_write_bulk_callback(struct urb *urb)
         priv->flags.write_urb_in_use = 0;
 
         /* schedule the interrupt urb if we are still open */
-        port->interrupt_in_urb->dev = port->serial->dev;
         dbg("%s(): submitting interrupt urb", __func__);
         result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
         if (result != 0) {
diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c
index b18179bda0d8..f2485429172f 100644
--- a/drivers/usb/serial/sierra.c
+++ b/drivers/usb/serial/sierra.c
@@ -681,7 +681,6 @@ static void sierra_instat_callback(struct urb *urb)
         /* Resubmit urb so we continue receiving IRQ data */
         if (status != -ESHUTDOWN && status != -ENOENT) {
                 usb_mark_last_busy(serial->dev);
-                urb->dev = serial->dev;
                 err = usb_submit_urb(urb, GFP_ATOMIC);
                 if (err && err != -EPERM)
                         dev_err(&port->dev, "%s: resubmit intr urb "
diff --git a/drivers/usb/serial/symbolserial.c b/drivers/usb/serial/symbolserial.c
index 7096f799b071..c70cc012d03f 100644
--- a/drivers/usb/serial/symbolserial.c
+++ b/drivers/usb/serial/symbolserial.c
@@ -182,7 +182,6 @@ static void symbol_unthrottle(struct tty_struct *tty)
         priv->actually_throttled = false;
         spin_unlock_irq(&priv->lock);
 
-        priv->int_urb->dev = port->serial->dev;
         if (was_throttled) {
                 result = usb_submit_urb(priv->int_urb, GFP_KERNEL);
                 if (result)
diff --git a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c
index ea8445689c85..6d16717ef4f7 100644
--- a/drivers/usb/serial/ti_usb_3410_5052.c
+++ b/drivers/usb/serial/ti_usb_3410_5052.c
@@ -537,7 +537,6 @@ static int ti_open(struct tty_struct *tty, struct usb_serial_port *port)
                 }
                 urb->complete = ti_interrupt_callback;
                 urb->context = tdev;
-                urb->dev = dev;
                 status = usb_submit_urb(urb, GFP_KERNEL);
                 if (status) {
                         dev_err(&port->dev,
@@ -621,7 +620,6 @@ static int ti_open(struct tty_struct *tty, struct usb_serial_port *port)
         tport->tp_read_urb_state = TI_READ_URB_RUNNING;
         urb->complete = ti_bulk_in_callback;
         urb->context = tport;
-        urb->dev = dev;
         status = usb_submit_urb(urb, GFP_KERNEL);
         if (status) {
                 dev_err(&port->dev, "%s - submit read urb failed, %d\n",
@@ -1236,12 +1234,11 @@ static void ti_bulk_in_callback(struct urb *urb)
 exit:
         /* continue to read unless stopping */
         spin_lock(&tport->tp_lock);
-        if (tport->tp_read_urb_state == TI_READ_URB_RUNNING) {
-                urb->dev = port->serial->dev;
+        if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)
                 retval = usb_submit_urb(urb, GFP_ATOMIC);
-        } else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING) {
+        else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING)
                 tport->tp_read_urb_state = TI_READ_URB_STOPPED;
-        }
+
         spin_unlock(&tport->tp_lock);
         if (retval)
                 dev_err(dev, "%s - resubmit read urb failed, %d\n",
@@ -1576,7 +1573,6 @@ static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty)
                 spin_unlock_irqrestore(&tport->tp_lock, flags);
                 urb->complete = ti_bulk_in_callback;
                 urb->context = tport;
-                urb->dev = tport->tp_port->serial->dev;
                 status = usb_submit_urb(urb, GFP_KERNEL);
         } else  {
                 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
diff --git a/drivers/usb/serial/whiteheat.c b/drivers/usb/serial/whiteheat.c
index 7eb360b1f8b9..11af903cb09f 100644
--- a/drivers/usb/serial/whiteheat.c
+++ b/drivers/usb/serial/whiteheat.c
@@ -702,7 +702,6 @@ static void whiteheat_close(struct usb_serial_port *port)
 static int whiteheat_write(struct tty_struct *tty,
         struct usb_serial_port *port, const unsigned char *buf, int count)
 {
-        struct usb_serial *serial = port->serial;
         struct whiteheat_private *info = usb_get_serial_port_data(port);
         struct whiteheat_urb_wrap *wrap;
         struct urb *urb;
@@ -738,7 +737,6 @@ static int whiteheat_write(struct tty_struct *tty,
                 usb_serial_debug_data(debug, &port->dev,
                                 __func__, bytes, urb->transfer_buffer);
 
-                urb->dev = serial->dev;
                 urb->transfer_buffer_length = bytes;
                 result = usb_submit_urb(urb, GFP_ATOMIC);
                 if (result) {
@@ -984,7 +982,6 @@ static void command_port_read_callback(struct urb *urb)
                 dbg("%s - bad reply from firmware", __func__);
 
         /* Continue trying to always read */
-        command_port->read_urb->dev = command_port->serial->dev;
         result = usb_submit_urb(command_port->read_urb, GFP_ATOMIC);
         if (result)
                 dbg("%s - failed resubmitting read urb, error %d",
@@ -1090,7 +1087,6 @@ static int firm_send_command(struct usb_serial_port *port, __u8 command,
         transfer_buffer[0] = command;
         memcpy(&transfer_buffer[1], data, datasize);
         command_port->write_urb->transfer_buffer_length = datasize + 1;
-        command_port->write_urb->dev = port->serial->dev;
         retval = usb_submit_urb(command_port->write_urb, GFP_NOIO);
         if (retval) {
                 dbg("%s - submit urb failed", __func__);
@@ -1311,7 +1307,6 @@ static int start_command_port(struct usb_serial *serial)
                 /* Work around HCD bugs */
                 usb_clear_halt(serial->dev, command_port->read_urb->pipe);
 
-                command_port->read_urb->dev = serial->dev;
                 retval = usb_submit_urb(command_port->read_urb, GFP_KERNEL);
                 if (retval) {
                         dev_err(&serial->dev->dev,
@@ -1359,7 +1354,6 @@ static int start_port_read(struct usb_serial_port *port)
                 list_del(tmp);
                 wrap = list_entry(tmp, struct whiteheat_urb_wrap, list);
                 urb = wrap->urb;
-                urb->dev = port->serial->dev;
                 spin_unlock_irqrestore(&info->lock, flags);
                 retval = usb_submit_urb(urb, GFP_KERNEL);
                 if (retval) {
@@ -1439,7 +1433,6 @@ static void rx_data_softint(struct work_struct *work)
                         sent += tty_insert_flip_string(tty,
                                 urb->transfer_buffer, urb->actual_length);
 
-                urb->dev = port->serial->dev;
                 result = usb_submit_urb(urb, GFP_ATOMIC);
                 if (result) {
                         dev_err(&port->dev,