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path: root/drivers/usb/misc/legousbtower.c
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Diffstat (limited to 'drivers/usb/misc/legousbtower.c')
-rw-r--r--drivers/usb/misc/legousbtower.c303
1 files changed, 118 insertions, 185 deletions
diff --git a/drivers/usb/misc/legousbtower.c b/drivers/usb/misc/legousbtower.c
index 23061f1526b4..ab4b98b04115 100644
--- a/drivers/usb/misc/legousbtower.c
+++ b/drivers/usb/misc/legousbtower.c
@@ -157,19 +157,19 @@ MODULE_PARM_DESC(interrupt_out_interval, "Interrupt out interval in ms");
#define LEGO_USB_TOWER_REQUEST_GET_VERSION 0xFD
struct tower_reset_reply {
- __le16 size; /* little-endian */
+ __le16 size;
__u8 err_code;
__u8 spare;
-} __attribute__ ((packed));
+};
struct tower_get_version_reply {
- __le16 size; /* little-endian */
+ __le16 size;
__u8 err_code;
__u8 spare;
__u8 major;
__u8 minor;
- __le16 build_no; /* little-endian */
-} __attribute__ ((packed));
+ __le16 build_no;
+};
/* table of devices that work with this driver */
@@ -178,7 +178,7 @@ static const struct usb_device_id tower_table[] = {
{ } /* Terminating entry */
};
-MODULE_DEVICE_TABLE (usb, tower_table);
+MODULE_DEVICE_TABLE(usb, tower_table);
#define LEGO_USB_TOWER_MINOR_BASE 160
@@ -186,13 +186,13 @@ MODULE_DEVICE_TABLE (usb, tower_table);
/* Structure to hold all of our device specific stuff */
struct lego_usb_tower {
struct mutex lock; /* locks this structure */
- struct usb_device* udev; /* save off the usb device pointer */
+ struct usb_device *udev; /* save off the usb device pointer */
unsigned char minor; /* the starting minor number for this device */
int open_count; /* number of times this port has been opened */
unsigned long disconnected:1;
- char* read_buffer;
+ char *read_buffer;
size_t read_buffer_length; /* this much came in */
size_t read_packet_length; /* this much will be returned on read */
spinlock_t read_buffer_lock;
@@ -202,16 +202,15 @@ struct lego_usb_tower {
wait_queue_head_t read_wait;
wait_queue_head_t write_wait;
- char* interrupt_in_buffer;
- struct usb_endpoint_descriptor* interrupt_in_endpoint;
- struct urb* interrupt_in_urb;
+ char *interrupt_in_buffer;
+ struct usb_endpoint_descriptor *interrupt_in_endpoint;
+ struct urb *interrupt_in_urb;
int interrupt_in_interval;
- int interrupt_in_running;
int interrupt_in_done;
- char* interrupt_out_buffer;
- struct usb_endpoint_descriptor* interrupt_out_endpoint;
- struct urb* interrupt_out_urb;
+ char *interrupt_out_buffer;
+ struct usb_endpoint_descriptor *interrupt_out_endpoint;
+ struct urb *interrupt_out_urb;
int interrupt_out_interval;
int interrupt_out_busy;
@@ -219,21 +218,20 @@ struct lego_usb_tower {
/* local function prototypes */
-static ssize_t tower_read (struct file *file, char __user *buffer, size_t count, loff_t *ppos);
-static ssize_t tower_write (struct file *file, const char __user *buffer, size_t count, loff_t *ppos);
-static inline void tower_delete (struct lego_usb_tower *dev);
-static int tower_open (struct inode *inode, struct file *file);
-static int tower_release (struct inode *inode, struct file *file);
-static __poll_t tower_poll (struct file *file, poll_table *wait);
-static loff_t tower_llseek (struct file *file, loff_t off, int whence);
+static ssize_t tower_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos);
+static ssize_t tower_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos);
+static inline void tower_delete(struct lego_usb_tower *dev);
+static int tower_open(struct inode *inode, struct file *file);
+static int tower_release(struct inode *inode, struct file *file);
+static __poll_t tower_poll(struct file *file, poll_table *wait);
+static loff_t tower_llseek(struct file *file, loff_t off, int whence);
-static void tower_abort_transfers (struct lego_usb_tower *dev);
-static void tower_check_for_read_packet (struct lego_usb_tower *dev);
-static void tower_interrupt_in_callback (struct urb *urb);
-static void tower_interrupt_out_callback (struct urb *urb);
+static void tower_check_for_read_packet(struct lego_usb_tower *dev);
+static void tower_interrupt_in_callback(struct urb *urb);
+static void tower_interrupt_out_callback(struct urb *urb);
-static int tower_probe (struct usb_interface *interface, const struct usb_device_id *id);
-static void tower_disconnect (struct usb_interface *interface);
+static int tower_probe(struct usb_interface *interface, const struct usb_device_id *id);
+static void tower_disconnect(struct usb_interface *interface);
/* file operations needed when we register this driver */
@@ -288,23 +286,23 @@ static inline void lego_usb_tower_debug_data(struct device *dev,
/**
* tower_delete
*/
-static inline void tower_delete (struct lego_usb_tower *dev)
+static inline void tower_delete(struct lego_usb_tower *dev)
{
/* free data structures */
usb_free_urb(dev->interrupt_in_urb);
usb_free_urb(dev->interrupt_out_urb);
- kfree (dev->read_buffer);
- kfree (dev->interrupt_in_buffer);
- kfree (dev->interrupt_out_buffer);
+ kfree(dev->read_buffer);
+ kfree(dev->interrupt_in_buffer);
+ kfree(dev->interrupt_out_buffer);
usb_put_dev(dev->udev);
- kfree (dev);
+ kfree(dev);
}
/**
* tower_open
*/
-static int tower_open (struct inode *inode, struct file *file)
+static int tower_open(struct inode *inode, struct file *file)
{
struct lego_usb_tower *dev = NULL;
int subminor;
@@ -314,7 +312,6 @@ static int tower_open (struct inode *inode, struct file *file)
int result;
reset_reply = kmalloc(sizeof(*reset_reply), GFP_KERNEL);
-
if (!reset_reply) {
retval = -ENOMEM;
goto exit;
@@ -323,8 +320,7 @@ static int tower_open (struct inode *inode, struct file *file)
nonseekable_open(inode, file);
subminor = iminor(inode);
- interface = usb_find_interface (&tower_driver, subminor);
-
+ interface = usb_find_interface(&tower_driver, subminor);
if (!interface) {
pr_err("error, can't find device for minor %d\n", subminor);
retval = -ENODEV;
@@ -351,15 +347,15 @@ static int tower_open (struct inode *inode, struct file *file)
}
/* reset the tower */
- result = usb_control_msg (dev->udev,
- usb_rcvctrlpipe(dev->udev, 0),
- LEGO_USB_TOWER_REQUEST_RESET,
- USB_TYPE_VENDOR | USB_DIR_IN | USB_RECIP_DEVICE,
- 0,
- 0,
- reset_reply,
- sizeof(*reset_reply),
- 1000);
+ result = usb_control_msg(dev->udev,
+ usb_rcvctrlpipe(dev->udev, 0),
+ LEGO_USB_TOWER_REQUEST_RESET,
+ USB_TYPE_VENDOR | USB_DIR_IN | USB_RECIP_DEVICE,
+ 0,
+ 0,
+ reset_reply,
+ sizeof(*reset_reply),
+ 1000);
if (result < 0) {
dev_err(&dev->udev->dev,
"LEGO USB Tower reset control request failed\n");
@@ -370,24 +366,22 @@ static int tower_open (struct inode *inode, struct file *file)
/* initialize in direction */
dev->read_buffer_length = 0;
dev->read_packet_length = 0;
- usb_fill_int_urb (dev->interrupt_in_urb,
- dev->udev,
- usb_rcvintpipe(dev->udev, dev->interrupt_in_endpoint->bEndpointAddress),
- dev->interrupt_in_buffer,
- usb_endpoint_maxp(dev->interrupt_in_endpoint),
- tower_interrupt_in_callback,
- dev,
- dev->interrupt_in_interval);
-
- dev->interrupt_in_running = 1;
+ usb_fill_int_urb(dev->interrupt_in_urb,
+ dev->udev,
+ usb_rcvintpipe(dev->udev, dev->interrupt_in_endpoint->bEndpointAddress),
+ dev->interrupt_in_buffer,
+ usb_endpoint_maxp(dev->interrupt_in_endpoint),
+ tower_interrupt_in_callback,
+ dev,
+ dev->interrupt_in_interval);
+
dev->interrupt_in_done = 0;
mb();
- retval = usb_submit_urb (dev->interrupt_in_urb, GFP_KERNEL);
+ retval = usb_submit_urb(dev->interrupt_in_urb, GFP_KERNEL);
if (retval) {
dev_err(&dev->udev->dev,
"Couldn't submit interrupt_in_urb %d\n", retval);
- dev->interrupt_in_running = 0;
goto unlock_exit;
}
@@ -407,13 +401,12 @@ exit:
/**
* tower_release
*/
-static int tower_release (struct inode *inode, struct file *file)
+static int tower_release(struct inode *inode, struct file *file)
{
struct lego_usb_tower *dev;
int retval = 0;
dev = file->private_data;
-
if (dev == NULL) {
retval = -ENODEV;
goto exit;
@@ -421,56 +414,32 @@ static int tower_release (struct inode *inode, struct file *file)
mutex_lock(&dev->lock);
- if (dev->open_count != 1) {
- dev_dbg(&dev->udev->dev, "%s: device not opened exactly once\n",
- __func__);
- retval = -ENODEV;
- goto unlock_exit;
- }
-
if (dev->disconnected) {
/* the device was unplugged before the file was released */
/* unlock here as tower_delete frees dev */
mutex_unlock(&dev->lock);
- tower_delete (dev);
+ tower_delete(dev);
goto exit;
}
/* wait until write transfer is finished */
if (dev->interrupt_out_busy) {
- wait_event_interruptible_timeout (dev->write_wait, !dev->interrupt_out_busy, 2 * HZ);
+ wait_event_interruptible_timeout(dev->write_wait, !dev->interrupt_out_busy,
+ 2 * HZ);
}
- tower_abort_transfers (dev);
+
+ /* shutdown transfers */
+ usb_kill_urb(dev->interrupt_in_urb);
+ usb_kill_urb(dev->interrupt_out_urb);
+
dev->open_count = 0;
-unlock_exit:
mutex_unlock(&dev->lock);
exit:
return retval;
}
-
-/**
- * tower_abort_transfers
- * aborts transfers and frees associated data structures
- */
-static void tower_abort_transfers (struct lego_usb_tower *dev)
-{
- if (dev == NULL)
- return;
-
- /* shutdown transfer */
- if (dev->interrupt_in_running) {
- dev->interrupt_in_running = 0;
- mb();
- usb_kill_urb(dev->interrupt_in_urb);
- }
- if (dev->interrupt_out_busy)
- usb_kill_urb(dev->interrupt_out_urb);
-}
-
-
/**
* tower_check_for_read_packet
*
@@ -479,23 +448,23 @@ static void tower_abort_transfers (struct lego_usb_tower *dev)
* until it has been there unchanged for at least
* dev->packet_timeout_jiffies, or until the buffer is full.
*/
-static void tower_check_for_read_packet (struct lego_usb_tower *dev)
+static void tower_check_for_read_packet(struct lego_usb_tower *dev)
{
- spin_lock_irq (&dev->read_buffer_lock);
+ spin_lock_irq(&dev->read_buffer_lock);
if (!packet_timeout
|| time_after(jiffies, dev->read_last_arrival + dev->packet_timeout_jiffies)
|| dev->read_buffer_length == read_buffer_size) {
dev->read_packet_length = dev->read_buffer_length;
}
dev->interrupt_in_done = 0;
- spin_unlock_irq (&dev->read_buffer_lock);
+ spin_unlock_irq(&dev->read_buffer_lock);
}
/**
* tower_poll
*/
-static __poll_t tower_poll (struct file *file, poll_table *wait)
+static __poll_t tower_poll(struct file *file, poll_table *wait)
{
struct lego_usb_tower *dev;
__poll_t mask = 0;
@@ -509,12 +478,10 @@ static __poll_t tower_poll (struct file *file, poll_table *wait)
poll_wait(file, &dev->write_wait, wait);
tower_check_for_read_packet(dev);
- if (dev->read_packet_length > 0) {
+ if (dev->read_packet_length > 0)
mask |= EPOLLIN | EPOLLRDNORM;
- }
- if (!dev->interrupt_out_busy) {
+ if (!dev->interrupt_out_busy)
mask |= EPOLLOUT | EPOLLWRNORM;
- }
return mask;
}
@@ -523,7 +490,7 @@ static __poll_t tower_poll (struct file *file, poll_table *wait)
/**
* tower_llseek
*/
-static loff_t tower_llseek (struct file *file, loff_t off, int whence)
+static loff_t tower_llseek(struct file *file, loff_t off, int whence)
{
return -ESPIPE; /* unseekable */
}
@@ -532,7 +499,7 @@ static loff_t tower_llseek (struct file *file, loff_t off, int whence)
/**
* tower_read
*/
-static ssize_t tower_read (struct file *file, char __user *buffer, size_t count, loff_t *ppos)
+static ssize_t tower_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos)
{
struct lego_usb_tower *dev;
size_t bytes_to_read;
@@ -551,7 +518,6 @@ static ssize_t tower_read (struct file *file, char __user *buffer, size_t count,
/* verify that the device wasn't unplugged */
if (dev->disconnected) {
retval = -ENODEV;
- pr_err("No device or device unplugged %d\n", retval);
goto unlock_exit;
}
@@ -561,21 +527,19 @@ static ssize_t tower_read (struct file *file, char __user *buffer, size_t count,
goto unlock_exit;
}
- if (read_timeout) {
+ if (read_timeout)
timeout = jiffies + msecs_to_jiffies(read_timeout);
- }
/* wait for data */
- tower_check_for_read_packet (dev);
+ tower_check_for_read_packet(dev);
while (dev->read_packet_length == 0) {
if (file->f_flags & O_NONBLOCK) {
retval = -EAGAIN;
goto unlock_exit;
}
retval = wait_event_interruptible_timeout(dev->read_wait, dev->interrupt_in_done, dev->packet_timeout_jiffies);
- if (retval < 0) {
+ if (retval < 0)
goto unlock_exit;
- }
/* reset read timeout during read or write activity */
if (read_timeout
@@ -583,28 +547,27 @@ static ssize_t tower_read (struct file *file, char __user *buffer, size_t count,
timeout = jiffies + msecs_to_jiffies(read_timeout);
}
/* check for read timeout */
- if (read_timeout && time_after (jiffies, timeout)) {
+ if (read_timeout && time_after(jiffies, timeout)) {
retval = -ETIMEDOUT;
goto unlock_exit;
}
- tower_check_for_read_packet (dev);
+ tower_check_for_read_packet(dev);
}
/* copy the data from read_buffer into userspace */
bytes_to_read = min(count, dev->read_packet_length);
- if (copy_to_user (buffer, dev->read_buffer, bytes_to_read)) {
+ if (copy_to_user(buffer, dev->read_buffer, bytes_to_read)) {
retval = -EFAULT;
goto unlock_exit;
}
- spin_lock_irq (&dev->read_buffer_lock);
+ spin_lock_irq(&dev->read_buffer_lock);
dev->read_buffer_length -= bytes_to_read;
dev->read_packet_length -= bytes_to_read;
- for (i=0; i<dev->read_buffer_length; i++) {
+ for (i = 0; i < dev->read_buffer_length; i++)
dev->read_buffer[i] = dev->read_buffer[i+bytes_to_read];
- }
- spin_unlock_irq (&dev->read_buffer_lock);
+ spin_unlock_irq(&dev->read_buffer_lock);
retval = bytes_to_read;
@@ -620,7 +583,7 @@ exit:
/**
* tower_write
*/
-static ssize_t tower_write (struct file *file, const char __user *buffer, size_t count, loff_t *ppos)
+static ssize_t tower_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos)
{
struct lego_usb_tower *dev;
size_t bytes_to_write;
@@ -637,7 +600,6 @@ static ssize_t tower_write (struct file *file, const char __user *buffer, size_t
/* verify that the device wasn't unplugged */
if (dev->disconnected) {
retval = -ENODEV;
- pr_err("No device or device unplugged %d\n", retval);
goto unlock_exit;
}
@@ -653,10 +615,10 @@ static ssize_t tower_write (struct file *file, const char __user *buffer, size_t
retval = -EAGAIN;
goto unlock_exit;
}
- retval = wait_event_interruptible (dev->write_wait, !dev->interrupt_out_busy);
- if (retval) {
+ retval = wait_event_interruptible(dev->write_wait,
+ !dev->interrupt_out_busy);
+ if (retval)
goto unlock_exit;
- }
}
/* write the data into interrupt_out_buffer from userspace */
@@ -664,7 +626,7 @@ static ssize_t tower_write (struct file *file, const char __user *buffer, size_t
dev_dbg(&dev->udev->dev, "%s: count = %zd, bytes_to_write = %zd\n",
__func__, count, bytes_to_write);
- if (copy_from_user (dev->interrupt_out_buffer, buffer, bytes_to_write)) {
+ if (copy_from_user(dev->interrupt_out_buffer, buffer, bytes_to_write)) {
retval = -EFAULT;
goto unlock_exit;
}
@@ -682,7 +644,7 @@ static ssize_t tower_write (struct file *file, const char __user *buffer, size_t
dev->interrupt_out_busy = 1;
wmb();
- retval = usb_submit_urb (dev->interrupt_out_urb, GFP_KERNEL);
+ retval = usb_submit_urb(dev->interrupt_out_urb, GFP_KERNEL);
if (retval) {
dev->interrupt_out_busy = 0;
dev_err(&dev->udev->dev,
@@ -703,7 +665,7 @@ exit:
/**
* tower_interrupt_in_callback
*/
-static void tower_interrupt_in_callback (struct urb *urb)
+static void tower_interrupt_in_callback(struct urb *urb)
{
struct lego_usb_tower *dev = urb->context;
int status = urb->status;
@@ -729,9 +691,9 @@ static void tower_interrupt_in_callback (struct urb *urb)
if (urb->actual_length > 0) {
spin_lock_irqsave(&dev->read_buffer_lock, flags);
if (dev->read_buffer_length + urb->actual_length < read_buffer_size) {
- memcpy (dev->read_buffer + dev->read_buffer_length,
- dev->interrupt_in_buffer,
- urb->actual_length);
+ memcpy(dev->read_buffer + dev->read_buffer_length,
+ dev->interrupt_in_buffer,
+ urb->actual_length);
dev->read_buffer_length += urb->actual_length;
dev->read_last_arrival = jiffies;
dev_dbg(&dev->udev->dev, "%s: received %d bytes\n",
@@ -744,25 +706,21 @@ static void tower_interrupt_in_callback (struct urb *urb)
}
resubmit:
- /* resubmit if we're still running */
- if (dev->interrupt_in_running) {
- retval = usb_submit_urb (dev->interrupt_in_urb, GFP_ATOMIC);
- if (retval)
- dev_err(&dev->udev->dev,
- "%s: usb_submit_urb failed (%d)\n",
- __func__, retval);
+ retval = usb_submit_urb(dev->interrupt_in_urb, GFP_ATOMIC);
+ if (retval) {
+ dev_err(&dev->udev->dev, "%s: usb_submit_urb failed (%d)\n",
+ __func__, retval);
}
-
exit:
dev->interrupt_in_done = 1;
- wake_up_interruptible (&dev->read_wait);
+ wake_up_interruptible(&dev->read_wait);
}
/**
* tower_interrupt_out_callback
*/
-static void tower_interrupt_out_callback (struct urb *urb)
+static void tower_interrupt_out_callback(struct urb *urb)
{
struct lego_usb_tower *dev = urb->context;
int status = urb->status;
@@ -790,48 +748,27 @@ static void tower_interrupt_out_callback (struct urb *urb)
* Called by the usb core when a new device is connected that it thinks
* this driver might be interested in.
*/
-static int tower_probe (struct usb_interface *interface, const struct usb_device_id *id)
+static int tower_probe(struct usb_interface *interface, const struct usb_device_id *id)
{
struct device *idev = &interface->dev;
struct usb_device *udev = interface_to_usbdev(interface);
- struct lego_usb_tower *dev = NULL;
+ struct lego_usb_tower *dev;
struct tower_get_version_reply *get_version_reply = NULL;
int retval = -ENOMEM;
int result;
/* allocate memory for our device state and initialize it */
-
- dev = kmalloc (sizeof(struct lego_usb_tower), GFP_KERNEL);
-
+ dev = kzalloc(sizeof(*dev), GFP_KERNEL);
if (!dev)
goto exit;
mutex_init(&dev->lock);
-
dev->udev = usb_get_dev(udev);
- dev->open_count = 0;
- dev->disconnected = 0;
-
- dev->read_buffer = NULL;
- dev->read_buffer_length = 0;
- dev->read_packet_length = 0;
- spin_lock_init (&dev->read_buffer_lock);
+ spin_lock_init(&dev->read_buffer_lock);
dev->packet_timeout_jiffies = msecs_to_jiffies(packet_timeout);
dev->read_last_arrival = jiffies;
-
- init_waitqueue_head (&dev->read_wait);
- init_waitqueue_head (&dev->write_wait);
-
- dev->interrupt_in_buffer = NULL;
- dev->interrupt_in_endpoint = NULL;
- dev->interrupt_in_urb = NULL;
- dev->interrupt_in_running = 0;
- dev->interrupt_in_done = 0;
-
- dev->interrupt_out_buffer = NULL;
- dev->interrupt_out_endpoint = NULL;
- dev->interrupt_out_urb = NULL;
- dev->interrupt_out_busy = 0;
+ init_waitqueue_head(&dev->read_wait);
+ init_waitqueue_head(&dev->write_wait);
result = usb_find_common_endpoints_reverse(interface->cur_altsetting,
NULL, NULL,
@@ -843,16 +780,16 @@ static int tower_probe (struct usb_interface *interface, const struct usb_device
goto error;
}
- dev->read_buffer = kmalloc (read_buffer_size, GFP_KERNEL);
+ dev->read_buffer = kmalloc(read_buffer_size, GFP_KERNEL);
if (!dev->read_buffer)
goto error;
- dev->interrupt_in_buffer = kmalloc (usb_endpoint_maxp(dev->interrupt_in_endpoint), GFP_KERNEL);
+ dev->interrupt_in_buffer = kmalloc(usb_endpoint_maxp(dev->interrupt_in_endpoint), GFP_KERNEL);
if (!dev->interrupt_in_buffer)
goto error;
dev->interrupt_in_urb = usb_alloc_urb(0, GFP_KERNEL);
if (!dev->interrupt_in_urb)
goto error;
- dev->interrupt_out_buffer = kmalloc (write_buffer_size, GFP_KERNEL);
+ dev->interrupt_out_buffer = kmalloc(write_buffer_size, GFP_KERNEL);
if (!dev->interrupt_out_buffer)
goto error;
dev->interrupt_out_urb = usb_alloc_urb(0, GFP_KERNEL);
@@ -862,22 +799,21 @@ static int tower_probe (struct usb_interface *interface, const struct usb_device
dev->interrupt_out_interval = interrupt_out_interval ? interrupt_out_interval : dev->interrupt_out_endpoint->bInterval;
get_version_reply = kmalloc(sizeof(*get_version_reply), GFP_KERNEL);
-
if (!get_version_reply) {
retval = -ENOMEM;
goto error;
}
/* get the firmware version and log it */
- result = usb_control_msg (udev,
- usb_rcvctrlpipe(udev, 0),
- LEGO_USB_TOWER_REQUEST_GET_VERSION,
- USB_TYPE_VENDOR | USB_DIR_IN | USB_RECIP_DEVICE,
- 0,
- 0,
- get_version_reply,
- sizeof(*get_version_reply),
- 1000);
+ result = usb_control_msg(udev,
+ usb_rcvctrlpipe(udev, 0),
+ LEGO_USB_TOWER_REQUEST_GET_VERSION,
+ USB_TYPE_VENDOR | USB_DIR_IN | USB_RECIP_DEVICE,
+ 0,
+ 0,
+ get_version_reply,
+ sizeof(*get_version_reply),
+ 1000);
if (result != sizeof(*get_version_reply)) {
if (result >= 0)
result = -EIO;
@@ -892,10 +828,9 @@ static int tower_probe (struct usb_interface *interface, const struct usb_device
le16_to_cpu(get_version_reply->build_no));
/* we can register the device now, as it is ready */
- usb_set_intfdata (interface, dev);
-
- retval = usb_register_dev (interface, &tower_class);
+ usb_set_intfdata(interface, dev);
+ retval = usb_register_dev(interface, &tower_class);
if (retval) {
/* something prevented us from registering this driver */
dev_err(idev, "Not able to get a minor for this device.\n");
@@ -924,17 +859,17 @@ error:
*
* Called by the usb core when the device is removed from the system.
*/
-static void tower_disconnect (struct usb_interface *interface)
+static void tower_disconnect(struct usb_interface *interface)
{
struct lego_usb_tower *dev;
int minor;
- dev = usb_get_intfdata (interface);
+ dev = usb_get_intfdata(interface);
minor = dev->minor;
/* give back our minor and prevent further open() */
- usb_deregister_dev (interface, &tower_class);
+ usb_deregister_dev(interface, &tower_class);
/* stop I/O */
usb_poison_urb(dev->interrupt_in_urb);
@@ -945,7 +880,7 @@ static void tower_disconnect (struct usb_interface *interface)
/* if the device is not opened, then we clean up right now */
if (!dev->open_count) {
mutex_unlock(&dev->lock);
- tower_delete (dev);
+ tower_delete(dev);
} else {
dev->disconnected = 1;
/* wake up pollers */
@@ -962,6 +897,4 @@ module_usb_driver(tower_driver);
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
-#ifdef MODULE_LICENSE
MODULE_LICENSE("GPL");
-#endif
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-15 23:20:58 +0300