[Bluetooth] Code cleanup of the drivers source code

This patch is an attempt to cleanup the drivers source code to make all
Bluetooth drivers look more unique.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

1 files changed, 159 insertions, 157 deletions

diff --git a/drivers/bluetooth/bfusb.c b/drivers/bluetooth/bfusb.c
index 23f96213f4ac..efcc28ec9d9a 100644
--- a/drivers/bluetooth/bfusb.c
+++ b/drivers/bluetooth/bfusb.c
@@ -2,7 +2,7 @@
  *
  *  AVM BlueFRITZ! USB driver
  *
- *  Copyright (C) 2003  Marcel Holtmann <marcel@holtmann.org>
+ *  Copyright (C) 2003-2006  Marcel Holtmann <marcel@holtmann.org>
  *
  *
  *  This program is free software; you can redistribute it and/or modify
@@ -59,7 +59,6 @@ static struct usb_device_id bfusb_table[] = {
 
 MODULE_DEVICE_TABLE(usb, bfusb_table);
 
-
 #define BFUSB_MAX_BLOCK_SIZE    256
 
 #define BFUSB_BLOCK_TIMEOUT     3000
@@ -70,7 +69,7 @@ MODULE_DEVICE_TABLE(usb, bfusb_table);
 #define BFUSB_MAX_BULK_TX       2
 #define BFUSB_MAX_BULK_RX       2
 
-struct bfusb {
+struct bfusb_data {
         struct hci_dev          *hdev;
 
         unsigned long           state;
@@ -92,137 +91,136 @@ struct bfusb {
         struct sk_buff_head     completed_q;
 };
 
-struct bfusb_scb {
+struct bfusb_data_scb {
         struct urb *urb;
 };
 
 static void bfusb_tx_complete(struct urb *urb, struct pt_regs *regs);
 static void bfusb_rx_complete(struct urb *urb, struct pt_regs *regs);
 
-static struct urb *bfusb_get_completed(struct bfusb *bfusb)
+static struct urb *bfusb_get_completed(struct bfusb_data *data)
 {
         struct sk_buff *skb;
         struct urb *urb = NULL;
 
-        BT_DBG("bfusb %p", bfusb);
+        BT_DBG("bfusb %p", data);
 
-        skb = skb_dequeue(&bfusb->completed_q);
+        skb = skb_dequeue(&data->completed_q);
         if (skb) {
-                urb = ((struct bfusb_scb *) skb->cb)->urb;
+                urb = ((struct bfusb_data_scb *) skb->cb)->urb;
                 kfree_skb(skb);
         }
 
         return urb;
 }
 
-static void bfusb_unlink_urbs(struct bfusb *bfusb)
+static void bfusb_unlink_urbs(struct bfusb_data *data)
 {
         struct sk_buff *skb;
         struct urb *urb;
 
-        BT_DBG("bfusb %p", bfusb);
+        BT_DBG("bfusb %p", data);
 
-        while ((skb = skb_dequeue(&bfusb->pending_q))) {
-                urb = ((struct bfusb_scb *) skb->cb)->urb;
+        while ((skb = skb_dequeue(&data->pending_q))) {
+                urb = ((struct bfusb_data_scb *) skb->cb)->urb;
                 usb_kill_urb(urb);
-                skb_queue_tail(&bfusb->completed_q, skb);
+                skb_queue_tail(&data->completed_q, skb);
         }
 
-        while ((urb = bfusb_get_completed(bfusb)))
+        while ((urb = bfusb_get_completed(data)))
                 usb_free_urb(urb);
 }
 
-
-static int bfusb_send_bulk(struct bfusb *bfusb, struct sk_buff *skb)
+static int bfusb_send_bulk(struct bfusb_data *data, struct sk_buff *skb)
 {
-        struct bfusb_scb *scb = (void *) skb->cb;
-        struct urb *urb = bfusb_get_completed(bfusb);
+        struct bfusb_data_scb *scb = (void *) skb->cb;
+        struct urb *urb = bfusb_get_completed(data);
         int err, pipe;
 
-        BT_DBG("bfusb %p skb %p len %d", bfusb, skb, skb->len);
+        BT_DBG("bfusb %p skb %p len %d", data, skb, skb->len);
 
         if (!urb && !(urb = usb_alloc_urb(0, GFP_ATOMIC)))
                 return -ENOMEM;
 
-        pipe = usb_sndbulkpipe(bfusb->udev, bfusb->bulk_out_ep);
+        pipe = usb_sndbulkpipe(data->udev, data->bulk_out_ep);
 
-        usb_fill_bulk_urb(urb, bfusb->udev, pipe, skb->data, skb->len,
+        usb_fill_bulk_urb(urb, data->udev, pipe, skb->data, skb->len,
                         bfusb_tx_complete, skb);
 
         scb->urb = urb;
 
-        skb_queue_tail(&bfusb->pending_q, skb);
+        skb_queue_tail(&data->pending_q, skb);
 
         err = usb_submit_urb(urb, GFP_ATOMIC);
         if (err) {
                 BT_ERR("%s bulk tx submit failed urb %p err %d", 
-                                        bfusb->hdev->name, urb, err);
-                skb_unlink(skb, &bfusb->pending_q);
+                                        data->hdev->name, urb, err);
+                skb_unlink(skb, &data->pending_q);
                 usb_free_urb(urb);
         } else
-                atomic_inc(&bfusb->pending_tx);
+                atomic_inc(&data->pending_tx);
 
         return err;
 }
 
-static void bfusb_tx_wakeup(struct bfusb *bfusb)
+static void bfusb_tx_wakeup(struct bfusb_data *data)
 {
         struct sk_buff *skb;
 
-        BT_DBG("bfusb %p", bfusb);
+        BT_DBG("bfusb %p", data);
 
-        if (test_and_set_bit(BFUSB_TX_PROCESS, &bfusb->state)) {
-                set_bit(BFUSB_TX_WAKEUP, &bfusb->state);
+        if (test_and_set_bit(BFUSB_TX_PROCESS, &data->state)) {
+                set_bit(BFUSB_TX_WAKEUP, &data->state);
                 return;
         }
 
         do {
-                clear_bit(BFUSB_TX_WAKEUP, &bfusb->state);
+                clear_bit(BFUSB_TX_WAKEUP, &data->state);
 
-                while ((atomic_read(&bfusb->pending_tx) < BFUSB_MAX_BULK_TX) &&
-                                (skb = skb_dequeue(&bfusb->transmit_q))) {
-                        if (bfusb_send_bulk(bfusb, skb) < 0) {
-                                skb_queue_head(&bfusb->transmit_q, skb);
+                while ((atomic_read(&data->pending_tx) < BFUSB_MAX_BULK_TX) &&
+                                (skb = skb_dequeue(&data->transmit_q))) {
+                        if (bfusb_send_bulk(data, skb) < 0) {
+                                skb_queue_head(&data->transmit_q, skb);
                                 break;
                         }
                 }
 
-        } while (test_bit(BFUSB_TX_WAKEUP, &bfusb->state));
+        } while (test_bit(BFUSB_TX_WAKEUP, &data->state));
 
-        clear_bit(BFUSB_TX_PROCESS, &bfusb->state);
+        clear_bit(BFUSB_TX_PROCESS, &data->state);
 }
 
 static void bfusb_tx_complete(struct urb *urb, struct pt_regs *regs)
 {
         struct sk_buff *skb = (struct sk_buff *) urb->context;
-        struct bfusb *bfusb = (struct bfusb *) skb->dev;
+        struct bfusb_data *data = (struct bfusb_data *) skb->dev;
 
-        BT_DBG("bfusb %p urb %p skb %p len %d", bfusb, urb, skb, skb->len);
+        BT_DBG("bfusb %p urb %p skb %p len %d", data, urb, skb, skb->len);
 
-        atomic_dec(&bfusb->pending_tx);
+        atomic_dec(&data->pending_tx);
 
-        if (!test_bit(HCI_RUNNING, &bfusb->hdev->flags))
+        if (!test_bit(HCI_RUNNING, &data->hdev->flags))
                 return;
 
         if (!urb->status)
-                bfusb->hdev->stat.byte_tx += skb->len;
+                data->hdev->stat.byte_tx += skb->len;
         else
-                bfusb->hdev->stat.err_tx++;
+                data->hdev->stat.err_tx++;
 
-        read_lock(&bfusb->lock);
+        read_lock(&data->lock);
 
-        skb_unlink(skb, &bfusb->pending_q);
-        skb_queue_tail(&bfusb->completed_q, skb);
+        skb_unlink(skb, &data->pending_q);
+        skb_queue_tail(&data->completed_q, skb);
 
-        bfusb_tx_wakeup(bfusb);
+        bfusb_tx_wakeup(data);
 
-        read_unlock(&bfusb->lock);
+        read_unlock(&data->lock);
 }
 
 
-static int bfusb_rx_submit(struct bfusb *bfusb, struct urb *urb)
+static int bfusb_rx_submit(struct bfusb_data *data, struct urb *urb)
 {
-        struct bfusb_scb *scb;
+        struct bfusb_data_scb *scb;
         struct sk_buff *skb;
         int err, pipe, size = HCI_MAX_FRAME_SIZE + 32;
 
@@ -231,28 +229,29 @@ static int bfusb_rx_submit(struct bfusb *bfusb, struct urb *urb)
         if (!urb && !(urb = usb_alloc_urb(0, GFP_ATOMIC)))
                 return -ENOMEM;
 
-        if (!(skb = bt_skb_alloc(size, GFP_ATOMIC))) {
+        skb = bt_skb_alloc(size, GFP_ATOMIC);
+        if (!skb) {
                 usb_free_urb(urb);
                 return -ENOMEM;
         }
 
-        skb->dev = (void *) bfusb;
+        skb->dev = (void *) data;
 
-        scb = (struct bfusb_scb *) skb->cb;
+        scb = (struct bfusb_data_scb *) skb->cb;
         scb->urb = urb;
 
-        pipe = usb_rcvbulkpipe(bfusb->udev, bfusb->bulk_in_ep);
+        pipe = usb_rcvbulkpipe(data->udev, data->bulk_in_ep);
 
-        usb_fill_bulk_urb(urb, bfusb->udev, pipe, skb->data, size,
+        usb_fill_bulk_urb(urb, data->udev, pipe, skb->data, size,
                         bfusb_rx_complete, skb);
 
-        skb_queue_tail(&bfusb->pending_q, skb);
+        skb_queue_tail(&data->pending_q, skb);
 
         err = usb_submit_urb(urb, GFP_ATOMIC);
         if (err) {
                 BT_ERR("%s bulk rx submit failed urb %p err %d",
-                                        bfusb->hdev->name, urb, err);
-                skb_unlink(skb, &bfusb->pending_q);
+                                        data->hdev->name, urb, err);
+                skb_unlink(skb, &data->pending_q);
                 kfree_skb(skb);
                 usb_free_urb(urb);
         }
@@ -260,15 +259,15 @@ static int bfusb_rx_submit(struct bfusb *bfusb, struct urb *urb)
         return err;
 }
 
-static inline int bfusb_recv_block(struct bfusb *bfusb, int hdr, unsigned char *data, int len)
+static inline int bfusb_recv_block(struct bfusb_data *data, int hdr, unsigned char *buf, int len)
 {
-        BT_DBG("bfusb %p hdr 0x%02x data %p len %d", bfusb, hdr, data, len);
+        BT_DBG("bfusb %p hdr 0x%02x data %p len %d", data, hdr, buf, len);
 
         if (hdr & 0x10) {
-                BT_ERR("%s error in block", bfusb->hdev->name);
-                if (bfusb->reassembly)
-                        kfree_skb(bfusb->reassembly);
-                bfusb->reassembly = NULL;
+                BT_ERR("%s error in block", data->hdev->name);
+                if (data->reassembly)
+                        kfree_skb(data->reassembly);
+                data->reassembly = NULL;
                 return -EIO;
         }
 
@@ -277,46 +276,46 @@ static inline int bfusb_recv_block(struct bfusb *bfusb, int hdr, unsigned char *
                 unsigned char pkt_type;
                 int pkt_len = 0;
 
-                if (bfusb->reassembly) {
-                        BT_ERR("%s unexpected start block", bfusb->hdev->name);
-                        kfree_skb(bfusb->reassembly);
-                        bfusb->reassembly = NULL;
+                if (data->reassembly) {
+                        BT_ERR("%s unexpected start block", data->hdev->name);
+                        kfree_skb(data->reassembly);
+                        data->reassembly = NULL;
                 }
 
                 if (len < 1) {
-                        BT_ERR("%s no packet type found", bfusb->hdev->name);
+                        BT_ERR("%s no packet type found", data->hdev->name);
                         return -EPROTO;
                 }
 
-                pkt_type = *data++; len--;
+                pkt_type = *buf++; len--;
 
                 switch (pkt_type) {
                 case HCI_EVENT_PKT:
                         if (len >= HCI_EVENT_HDR_SIZE) {
-                                struct hci_event_hdr *hdr = (struct hci_event_hdr *) data;
+                                struct hci_event_hdr *hdr = (struct hci_event_hdr *) buf;
                                 pkt_len = HCI_EVENT_HDR_SIZE + hdr->plen;
                         } else {
-                                BT_ERR("%s event block is too short", bfusb->hdev->name);
+                                BT_ERR("%s event block is too short", data->hdev->name);
                                 return -EILSEQ;
                         }
                         break;
 
                 case HCI_ACLDATA_PKT:
                         if (len >= HCI_ACL_HDR_SIZE) {
-                                struct hci_acl_hdr *hdr = (struct hci_acl_hdr *) data;
+                                struct hci_acl_hdr *hdr = (struct hci_acl_hdr *) buf;
                                 pkt_len = HCI_ACL_HDR_SIZE + __le16_to_cpu(hdr->dlen);
                         } else {
-                                BT_ERR("%s data block is too short", bfusb->hdev->name);
+                                BT_ERR("%s data block is too short", data->hdev->name);
                                 return -EILSEQ;
                         }
                         break;
 
                 case HCI_SCODATA_PKT:
                         if (len >= HCI_SCO_HDR_SIZE) {
-                                struct hci_sco_hdr *hdr = (struct hci_sco_hdr *) data;
+                                struct hci_sco_hdr *hdr = (struct hci_sco_hdr *) buf;
                                 pkt_len = HCI_SCO_HDR_SIZE + hdr->dlen;
                         } else {
-                                BT_ERR("%s audio block is too short", bfusb->hdev->name);
+                                BT_ERR("%s audio block is too short", data->hdev->name);
                                 return -EILSEQ;
                         }
                         break;
@@ -324,27 +323,27 @@ static inline int bfusb_recv_block(struct bfusb *bfusb, int hdr, unsigned char *
 
                 skb = bt_skb_alloc(pkt_len, GFP_ATOMIC);
                 if (!skb) {
-                        BT_ERR("%s no memory for the packet", bfusb->hdev->name);
+                        BT_ERR("%s no memory for the packet", data->hdev->name);
                         return -ENOMEM;
                 }
 
-                skb->dev = (void *) bfusb->hdev;
+                skb->dev = (void *) data->hdev;
                 bt_cb(skb)->pkt_type = pkt_type;
 
-                bfusb->reassembly = skb;
+                data->reassembly = skb;
         } else {
-                if (!bfusb->reassembly) {
-                        BT_ERR("%s unexpected continuation block", bfusb->hdev->name);
+                if (!data->reassembly) {
+                        BT_ERR("%s unexpected continuation block", data->hdev->name);
                         return -EIO;
                 }
         }
 
         if (len > 0)
-                memcpy(skb_put(bfusb->reassembly, len), data, len);
+                memcpy(skb_put(data->reassembly, len), buf, len);
 
         if (hdr & 0x08) {
-                hci_recv_frame(bfusb->reassembly);
-                bfusb->reassembly = NULL;
+                hci_recv_frame(data->reassembly);
+                data->reassembly = NULL;
         }
 
         return 0;
@@ -353,22 +352,22 @@ static inline int bfusb_recv_block(struct bfusb *bfusb, int hdr, unsigned char *
 static void bfusb_rx_complete(struct urb *urb, struct pt_regs *regs)
 {
         struct sk_buff *skb = (struct sk_buff *) urb->context;
-        struct bfusb *bfusb = (struct bfusb *) skb->dev;
+        struct bfusb_data *data = (struct bfusb_data *) skb->dev;
         unsigned char *buf = urb->transfer_buffer;
         int count = urb->actual_length;
         int err, hdr, len;
 
         BT_DBG("bfusb %p urb %p skb %p len %d", bfusb, urb, skb, skb->len);
 
-        read_lock(&bfusb->lock);
+        read_lock(&data->lock);
 
-        if (!test_bit(HCI_RUNNING, &bfusb->hdev->flags))
+        if (!test_bit(HCI_RUNNING, &data->hdev->flags))
                 goto unlock;
 
         if (urb->status || !count)
                 goto resubmit;
 
-        bfusb->hdev->stat.byte_rx += count;
+        data->hdev->stat.byte_rx += count;
 
         skb_put(skb, count);
 
@@ -387,90 +386,89 @@ static void bfusb_rx_complete(struct urb *urb, struct pt_regs *regs)
 
                 if (count < len) {
                         BT_ERR("%s block extends over URB buffer ranges",
-                                        bfusb->hdev->name);
+                                        data->hdev->name);
                 }
 
                 if ((hdr & 0xe1) == 0xc1)
-                        bfusb_recv_block(bfusb, hdr, buf, len);
+                        bfusb_recv_block(data, hdr, buf, len);
 
                 count -= len;
                 buf   += len;
         }
 
-        skb_unlink(skb, &bfusb->pending_q);
+        skb_unlink(skb, &data->pending_q);
         kfree_skb(skb);
 
-        bfusb_rx_submit(bfusb, urb);
+        bfusb_rx_submit(data, urb);
 
-        read_unlock(&bfusb->lock);
+        read_unlock(&data->lock);
 
         return;
 
 resubmit:
-        urb->dev = bfusb->udev;
+        urb->dev = data->udev;
 
         err = usb_submit_urb(urb, GFP_ATOMIC);
         if (err) {
                 BT_ERR("%s bulk resubmit failed urb %p err %d",
-                                        bfusb->hdev->name, urb, err);
+                                        data->hdev->name, urb, err);
         }
 
 unlock:
-        read_unlock(&bfusb->lock);
+        read_unlock(&data->lock);
 }
 
-
 static int bfusb_open(struct hci_dev *hdev)
 {
-        struct bfusb *bfusb = (struct bfusb *) hdev->driver_data;
+        struct bfusb_data *data = hdev->driver_data;
         unsigned long flags;
         int i, err;
 
-        BT_DBG("hdev %p bfusb %p", hdev, bfusb);
+        BT_DBG("hdev %p bfusb %p", hdev, data);
 
         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
                 return 0;
 
-        write_lock_irqsave(&bfusb->lock, flags);
+        write_lock_irqsave(&data->lock, flags);
 
-        err = bfusb_rx_submit(bfusb, NULL);
+        err = bfusb_rx_submit(data, NULL);
         if (!err) {
                 for (i = 1; i < BFUSB_MAX_BULK_RX; i++)
-                        bfusb_rx_submit(bfusb, NULL);
+                        bfusb_rx_submit(data, NULL);
         } else {
                 clear_bit(HCI_RUNNING, &hdev->flags);
         }
 
-        write_unlock_irqrestore(&bfusb->lock, flags);
+        write_unlock_irqrestore(&data->lock, flags);
 
         return err;
 }
 
 static int bfusb_flush(struct hci_dev *hdev)
 {
-        struct bfusb *bfusb = (struct bfusb *) hdev->driver_data;
+        struct bfusb_data *data = hdev->driver_data;
 
-        BT_DBG("hdev %p bfusb %p", hdev, bfusb);
+        BT_DBG("hdev %p bfusb %p", hdev, data);
 
-        skb_queue_purge(&bfusb->transmit_q);
+        skb_queue_purge(&data->transmit_q);
 
         return 0;
 }
 
 static int bfusb_close(struct hci_dev *hdev)
 {
-        struct bfusb *bfusb = (struct bfusb *) hdev->driver_data;
+        struct bfusb_data *data = hdev->driver_data;
         unsigned long flags;
 
-        BT_DBG("hdev %p bfusb %p", hdev, bfusb);
+        BT_DBG("hdev %p bfusb %p", hdev, data);
 
         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
                 return 0;
 
-        write_lock_irqsave(&bfusb->lock, flags);
-        write_unlock_irqrestore(&bfusb->lock, flags);
+        write_lock_irqsave(&data->lock, flags);
+        write_unlock_irqrestore(&data->lock, flags);
 
-        bfusb_unlink_urbs(bfusb);
+        bfusb_unlink_urbs(data);
         bfusb_flush(hdev);
 
         return 0;
@@ -479,7 +477,7 @@ static int bfusb_close(struct hci_dev *hdev)
 static int bfusb_send_frame(struct sk_buff *skb)
 {
         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
-        struct bfusb *bfusb;
+        struct bfusb_data *data;
         struct sk_buff *nskb;
         unsigned char buf[3];
         int sent = 0, size, count;
@@ -494,7 +492,7 @@ static int bfusb_send_frame(struct sk_buff *skb)
         if (!test_bit(HCI_RUNNING, &hdev->flags))
                 return -EBUSY;
 
-        bfusb = (struct bfusb *) hdev->driver_data;
+        data = hdev->driver_data;
 
         switch (bt_cb(skb)->pkt_type) {
         case HCI_COMMAND_PKT:
@@ -514,12 +512,13 @@ static int bfusb_send_frame(struct sk_buff *skb)
         count = skb->len;
 
         /* Max HCI frame size seems to be 1511 + 1 */
-        if (!(nskb = bt_skb_alloc(count + 32, GFP_ATOMIC))) {
+        nskb = bt_skb_alloc(count + 32, GFP_ATOMIC);
+        if (!nskb) {
                 BT_ERR("Can't allocate memory for new packet");
                 return -ENOMEM;
         }
 
-        nskb->dev = (void *) bfusb;
+        nskb->dev = (void *) data;
 
         while (count) {
                 size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE);
@@ -536,18 +535,18 @@ static int bfusb_send_frame(struct sk_buff *skb)
         }
 
         /* Don't send frame with multiple size of bulk max packet */
-        if ((nskb->len % bfusb->bulk_pkt_size) == 0) {
+        if ((nskb->len % data->bulk_pkt_size) == 0) {
                 buf[0] = 0xdd;
                 buf[1] = 0x00;
                 memcpy(skb_put(nskb, 2), buf, 2);
         }
 
-        read_lock(&bfusb->lock);
+        read_lock(&data->lock);
 
-        skb_queue_tail(&bfusb->transmit_q, nskb);
-        bfusb_tx_wakeup(bfusb);
+        skb_queue_tail(&data->transmit_q, nskb);
+        bfusb_tx_wakeup(data);
 
-        read_unlock(&bfusb->lock);
+        read_unlock(&data->lock);
 
         kfree_skb(skb);
 
@@ -556,11 +555,11 @@ static int bfusb_send_frame(struct sk_buff *skb)
 
 static void bfusb_destruct(struct hci_dev *hdev)
 {
-        struct bfusb *bfusb = (struct bfusb *) hdev->driver_data;
+        struct bfusb_data *data = hdev->driver_data;
 
-        BT_DBG("hdev %p bfusb %p", hdev, bfusb);
+        BT_DBG("hdev %p bfusb %p", hdev, data);
 
-        kfree(bfusb);
+        kfree(data);
 }
 
 static int bfusb_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg)
@@ -568,25 +567,24 @@ static int bfusb_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg
         return -ENOIOCTLCMD;
 }
 
-
-static int bfusb_load_firmware(struct bfusb *bfusb, unsigned char *firmware, int count)
+static int bfusb_load_firmware(struct bfusb_data *data, unsigned char *firmware, int count)
 {
         unsigned char *buf;
         int err, pipe, len, size, sent = 0;
 
-        BT_DBG("bfusb %p udev %p", bfusb, bfusb->udev);
+        BT_DBG("bfusb %p udev %p", data, data->udev);
 
         BT_INFO("BlueFRITZ! USB loading firmware");
 
-        pipe = usb_sndctrlpipe(bfusb->udev, 0);
+        pipe = usb_sndctrlpipe(data->udev, 0);
 
-        if (usb_control_msg(bfusb->udev, pipe, USB_REQ_SET_CONFIGURATION,
+        if (usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION,
                                 0, 1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT) < 0) {
                 BT_ERR("Can't change to loading configuration");
                 return -EBUSY;
         }
 
-        bfusb->udev->toggle[0] = bfusb->udev->toggle[1] = 0;
+        data->udev->toggle[0] = data->udev->toggle[1] = 0;
 
         buf = kmalloc(BFUSB_MAX_BLOCK_SIZE + 3, GFP_ATOMIC);
         if (!buf) {
@@ -594,14 +592,14 @@ static int bfusb_load_firmware(struct bfusb *bfusb, unsigned char *firmware, int
                 return -ENOMEM;
         }
 
-        pipe = usb_sndbulkpipe(bfusb->udev, bfusb->bulk_out_ep);
+        pipe = usb_sndbulkpipe(data->udev, data->bulk_out_ep);
 
         while (count) {
                 size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE + 3);
 
                 memcpy(buf, firmware + sent, size);
 
-                err = usb_bulk_msg(bfusb->udev, pipe, buf, size,
+                err = usb_bulk_msg(data->udev, pipe, buf, size,
                                         &len, BFUSB_BLOCK_TIMEOUT);
 
                 if (err || (len != size)) {
@@ -613,21 +611,23 @@ static int bfusb_load_firmware(struct bfusb *bfusb, unsigned char *firmware, int
                 count -= size;
         }
 
-        if ((err = usb_bulk_msg(bfusb->udev, pipe, NULL, 0,
-                                &len, BFUSB_BLOCK_TIMEOUT)) < 0) {
+        err = usb_bulk_msg(data->udev, pipe, NULL, 0,
+                                        &len, BFUSB_BLOCK_TIMEOUT);
+        if (err < 0) {
                 BT_ERR("Error in null packet request");
                 goto error;
         }
 
-        pipe = usb_sndctrlpipe(bfusb->udev, 0);
+        pipe = usb_sndctrlpipe(data->udev, 0);
 
-        if ((err = usb_control_msg(bfusb->udev, pipe, USB_REQ_SET_CONFIGURATION,
-                                0, 2, 0, NULL, 0, USB_CTRL_SET_TIMEOUT)) < 0) {
+        err = usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION,
+                                0, 2, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
+        if (err < 0) {
                 BT_ERR("Can't change to running configuration");
                 goto error;
         }
 
-        bfusb->udev->toggle[0] = bfusb->udev->toggle[1] = 0;
+        data->udev->toggle[0] = data->udev->toggle[1] = 0;
 
         BT_INFO("BlueFRITZ! USB device ready");
 
@@ -637,9 +637,9 @@ static int bfusb_load_firmware(struct bfusb *bfusb, unsigned char *firmware, int
 error:
         kfree(buf);
 
-        pipe = usb_sndctrlpipe(bfusb->udev, 0);
+        pipe = usb_sndctrlpipe(data->udev, 0);
 
-        usb_control_msg(bfusb->udev, pipe, USB_REQ_SET_CONFIGURATION,
+        usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION,
                                 0, 0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
 
         return err;
@@ -652,7 +652,7 @@ static int bfusb_probe(struct usb_interface *intf, const struct usb_device_id *i
         struct usb_host_endpoint *bulk_out_ep;
         struct usb_host_endpoint *bulk_in_ep;
         struct hci_dev *hdev;
-        struct bfusb *bfusb;
+        struct bfusb_data *data;
 
         BT_DBG("intf %p id %p", intf, id);
 
@@ -672,23 +672,24 @@ static int bfusb_probe(struct usb_interface *intf, const struct usb_device_id *i
         }
 
         /* Initialize control structure and load firmware */
-        if (!(bfusb = kzalloc(sizeof(struct bfusb), GFP_KERNEL))) {
+        data = kzalloc(sizeof(struct bfusb_data), GFP_KERNEL);
+        if (!data) {
                 BT_ERR("Can't allocate memory for control structure");
                 goto done;
         }
 
-        bfusb->udev = udev;
-        bfusb->bulk_in_ep    = bulk_in_ep->desc.bEndpointAddress;
-        bfusb->bulk_out_ep   = bulk_out_ep->desc.bEndpointAddress;
-        bfusb->bulk_pkt_size = le16_to_cpu(bulk_out_ep->desc.wMaxPacketSize);
+        data->udev = udev;
+        data->bulk_in_ep    = bulk_in_ep->desc.bEndpointAddress;
+        data->bulk_out_ep   = bulk_out_ep->desc.bEndpointAddress;
+        data->bulk_pkt_size = le16_to_cpu(bulk_out_ep->desc.wMaxPacketSize);
 
-        rwlock_init(&bfusb->lock);
+        rwlock_init(&data->lock);
 
-        bfusb->reassembly = NULL;
+        data->reassembly = NULL;
 
-        skb_queue_head_init(&bfusb->transmit_q);
-        skb_queue_head_init(&bfusb->pending_q);
-        skb_queue_head_init(&bfusb->completed_q);
+        skb_queue_head_init(&data->transmit_q);
+        skb_queue_head_init(&data->pending_q);
+        skb_queue_head_init(&data->completed_q);
 
         if (request_firmware(&firmware, "bfubase.frm", &udev->dev) < 0) {
                 BT_ERR("Firmware request failed");
@@ -697,7 +698,7 @@ static int bfusb_probe(struct usb_interface *intf, const struct usb_device_id *i
 
         BT_DBG("firmware data %p size %d", firmware->data, firmware->size);
 
-        if (bfusb_load_firmware(bfusb, firmware->data, firmware->size) < 0) {
+        if (bfusb_load_firmware(data, firmware->data, firmware->size) < 0) {
                 BT_ERR("Firmware loading failed");
                 goto release;
         }
@@ -711,10 +712,10 @@ static int bfusb_probe(struct usb_interface *intf, const struct usb_device_id *i
                 goto error;
         }
 
-        bfusb->hdev = hdev;
+        data->hdev = hdev;
 
         hdev->type = HCI_USB;
-        hdev->driver_data = bfusb;
+        hdev->driver_data = data;
         SET_HCIDEV_DEV(hdev, &intf->dev);
 
         hdev->open     = bfusb_open;
@@ -732,7 +733,7 @@ static int bfusb_probe(struct usb_interface *intf, const struct usb_device_id *i
                 goto error;
         }
 
-        usb_set_intfdata(intf, bfusb);
+        usb_set_intfdata(intf, data);
 
         return 0;
 
@@ -740,7 +741,7 @@ release:
         release_firmware(firmware);
 
 error:
-        kfree(bfusb);
+        kfree(data);
 
 done:
         return -EIO;
@@ -748,8 +749,8 @@ done:
 
 static void bfusb_disconnect(struct usb_interface *intf)
 {
-        struct bfusb *bfusb = usb_get_intfdata(intf);
-        struct hci_dev *hdev = bfusb->hdev;
+        struct bfusb_data *data = usb_get_intfdata(intf);
+        struct hci_dev *hdev = data->hdev;
 
         BT_DBG("intf %p", intf);
 
@@ -779,7 +780,8 @@ static int __init bfusb_init(void)
 
         BT_INFO("BlueFRITZ! USB driver ver %s", VERSION);
 
-        if ((err = usb_register(&bfusb_driver)) < 0)
+        err = usb_register(&bfusb_driver);
+        if (err < 0)
                 BT_ERR("Failed to register BlueFRITZ! USB driver");
 
         return err;