mirror of https://gitee.com/openkylin/linux.git
usb: misc: usblcd: fixed coding style issues
Fixed multiple coding style issues Signed-off-by: Zack Parsons <k3bacon@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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@ -18,7 +18,7 @@
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#include <linux/slab.h>
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#include <linux/errno.h>
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#include <linux/mutex.h>
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#include <asm/uaccess.h>
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#include <linux/uaccess.h>
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#include <linux/usb.h>
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#define DRIVER_VERSION "USBLCD Driver Version 1.05"
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@ -41,15 +41,22 @@ static DEFINE_MUTEX(open_disc_mutex);
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struct usb_lcd {
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struct usb_device *udev; /* init: probe_lcd */
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struct usb_interface * interface; /* the interface for this device */
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unsigned char * bulk_in_buffer; /* the buffer to receive data */
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size_t bulk_in_size; /* the size of the receive buffer */
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__u8 bulk_in_endpointAddr; /* the address of the bulk in endpoint */
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__u8 bulk_out_endpointAddr; /* the address of the bulk out endpoint */
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struct usb_interface *interface; /* the interface for
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this device */
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unsigned char *bulk_in_buffer; /* the buffer to receive
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data */
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size_t bulk_in_size; /* the size of the
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receive buffer */
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__u8 bulk_in_endpointAddr; /* the address of the
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bulk in endpoint */
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__u8 bulk_out_endpointAddr; /* the address of the
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bulk out endpoint */
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struct kref kref;
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struct semaphore limit_sem; /* to stop writes at full throttle from
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* using up all RAM */
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struct usb_anchor submitted; /* URBs to wait for before suspend */
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struct semaphore limit_sem; /* to stop writes at
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full throttle from
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using up all RAM */
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struct usb_anchor submitted; /* URBs to wait for
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before suspend */
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};
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#define to_lcd_dev(d) container_of(d, struct usb_lcd, kref)
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@ -126,7 +133,8 @@ static int lcd_release(struct inode *inode, struct file *file)
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return 0;
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}
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static ssize_t lcd_read(struct file *file, char __user * buffer, size_t count, loff_t *ppos)
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static ssize_t lcd_read(struct file *file, char __user * buffer,
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size_t count, loff_t *ppos)
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{
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struct usb_lcd *dev;
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int retval = 0;
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@ -136,7 +144,8 @@ static ssize_t lcd_read(struct file *file, char __user * buffer, size_t count, l
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/* do a blocking bulk read to get data from the device */
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retval = usb_bulk_msg(dev->udev,
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usb_rcvbulkpipe(dev->udev, dev->bulk_in_endpointAddr),
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usb_rcvbulkpipe(dev->udev,
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dev->bulk_in_endpointAddr),
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dev->bulk_in_buffer,
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min(dev->bulk_in_size, count),
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&bytes_read, 10000);
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@ -210,7 +219,8 @@ static void lcd_write_bulk_callback(struct urb *urb)
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up(&dev->limit_sem);
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}
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static ssize_t lcd_write(struct file *file, const char __user * user_buffer, size_t count, loff_t *ppos)
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static ssize_t lcd_write(struct file *file, const char __user * user_buffer,
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size_t count, loff_t *ppos)
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{
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struct usb_lcd *dev;
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int retval = 0, r;
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@ -234,7 +244,8 @@ static ssize_t lcd_write(struct file *file, const char __user * user_buffer, siz
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goto err_no_buf;
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}
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buf = usb_alloc_coherent(dev->udev, count, GFP_KERNEL, &urb->transfer_dma);
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buf = usb_alloc_coherent(dev->udev, count, GFP_KERNEL,
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&urb->transfer_dma);
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if (!buf) {
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retval = -ENOMEM;
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goto error;
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@ -247,7 +258,8 @@ static ssize_t lcd_write(struct file *file, const char __user * user_buffer, siz
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/* initialize the urb properly */
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usb_fill_bulk_urb(urb, dev->udev,
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usb_sndbulkpipe(dev->udev, dev->bulk_out_endpointAddr),
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usb_sndbulkpipe(dev->udev,
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dev->bulk_out_endpointAddr),
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buf, count, lcd_write_bulk_callback, dev);
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urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
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@ -256,11 +268,13 @@ static ssize_t lcd_write(struct file *file, const char __user * user_buffer, siz
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/* send the data out the bulk port */
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retval = usb_submit_urb(urb, GFP_KERNEL);
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if (retval) {
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err("USBLCD: %s - failed submitting write urb, error %d", __func__, retval);
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err("USBLCD: %s - failed submitting write urb, error %d",
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__func__, retval);
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goto error_unanchor;
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}
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/* release our reference to this urb, the USB core will eventually free it entirely */
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/* release our reference to this urb,
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the USB core will eventually free it entirely */
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usb_free_urb(urb);
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exit:
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@ -295,7 +309,8 @@ static struct usb_class_driver lcd_class = {
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.minor_base = USBLCD_MINOR,
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};
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static int lcd_probe(struct usb_interface *interface, const struct usb_device_id *id)
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static int lcd_probe(struct usb_interface *interface,
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const struct usb_device_id *id)
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{
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struct usb_lcd *dev = NULL;
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struct usb_host_interface *iface_desc;
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