diff options
| -rw-r--r-- | drivers/usb/serial/generic.c | 87 |
1 files changed, 49 insertions, 38 deletions
diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c index 5128018..fe84c88 100644 --- a/drivers/usb/serial/generic.c +++ b/drivers/usb/serial/generic.c @@ -18,7 +18,7 @@ #include <linux/moduleparam.h> #include <linux/usb.h> #include <linux/usb/serial.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> static int debug; @@ -81,7 +81,7 @@ static int generic_probe(struct usb_interface *interface, } #endif -int usb_serial_generic_register (int _debug) +int usb_serial_generic_register(int _debug) { int retval = 0; @@ -89,10 +89,11 @@ int usb_serial_generic_register (int _debug) #ifdef CONFIG_USB_SERIAL_GENERIC generic_device_ids[0].idVendor = vendor; generic_device_ids[0].idProduct = product; - generic_device_ids[0].match_flags = USB_DEVICE_ID_MATCH_VENDOR | USB_DEVICE_ID_MATCH_PRODUCT; + generic_device_ids[0].match_flags = + USB_DEVICE_ID_MATCH_VENDOR | USB_DEVICE_ID_MATCH_PRODUCT; /* register our generic driver with ourselves */ - retval = usb_serial_register (&usb_serial_generic_device); + retval = usb_serial_register(&usb_serial_generic_device); if (retval) goto exit; retval = usb_register(&generic_driver); @@ -103,12 +104,12 @@ exit: return retval; } -void usb_serial_generic_deregister (void) +void usb_serial_generic_deregister(void) { #ifdef CONFIG_USB_SERIAL_GENERIC /* remove our generic driver */ usb_deregister(&generic_driver); - usb_serial_deregister (&usb_serial_generic_device); + usb_serial_deregister(&usb_serial_generic_device); #endif } @@ -121,9 +122,9 @@ int usb_serial_generic_open(struct tty_struct *tty, dbg("%s - port %d", __func__, port->number); - /* force low_latency on so that our tty_push actually forces the data through, - otherwise it is scheduled, and with high data rates (like with OHCI) data - can get lost. */ + /* force low_latency on so that our tty_push actually forces the data + through, otherwise it is scheduled, and with high data rates (like + with OHCI) data can get lost. */ if (tty) tty->low_latency = 1; @@ -136,8 +137,9 @@ int usb_serial_generic_open(struct tty_struct *tty, /* if we have a bulk endpoint, start reading from it */ if (serial->num_bulk_in) { /* Start reading from the device */ - usb_fill_bulk_urb (port->read_urb, serial->dev, - usb_rcvbulkpipe(serial->dev, port->bulk_in_endpointAddress), + usb_fill_bulk_urb(port->read_urb, serial->dev, + usb_rcvbulkpipe(serial->dev, + port->bulk_in_endpointAddress), port->read_urb->transfer_buffer, port->read_urb->transfer_buffer_length, ((serial->type->read_bulk_callback) ? @@ -146,7 +148,9 @@ int usb_serial_generic_open(struct tty_struct *tty, port); result = usb_submit_urb(port->read_urb, GFP_KERNEL); if (result) - dev_err(&port->dev, "%s - failed resubmitting read urb, error %d\n", __func__, result); + dev_err(&port->dev, + "%s - failed resubmitting read urb, error %d\n", + __func__, result); } return result; @@ -194,10 +198,10 @@ int usb_serial_generic_resume(struct usb_serial *serial) } void usb_serial_generic_close(struct tty_struct *tty, - struct usb_serial_port *port, struct file * filp) + struct usb_serial_port *port, struct file *filp) { dbg("%s - port %d", __func__, port->number); - generic_cleanup (port); + generic_cleanup(port); } int usb_serial_generic_write(struct tty_struct *tty, @@ -211,7 +215,7 @@ int usb_serial_generic_write(struct tty_struct *tty, if (count == 0) { dbg("%s - write request of 0 bytes", __func__); - return (0); + return 0; } /* only do something if we have a bulk out endpoint */ @@ -226,27 +230,32 @@ int usb_serial_generic_write(struct tty_struct *tty, port->write_urb_busy = 1; spin_unlock_irqrestore(&port->lock, flags); - count = (count > port->bulk_out_size) ? port->bulk_out_size : count; + count = (count > port->bulk_out_size) ? + port->bulk_out_size : count; - memcpy (port->write_urb->transfer_buffer, buf, count); + memcpy(port->write_urb->transfer_buffer, buf, count); data = port->write_urb->transfer_buffer; usb_serial_debug_data(debug, &port->dev, __func__, count, data); /* set up our urb */ - usb_fill_bulk_urb (port->write_urb, serial->dev, - usb_sndbulkpipe (serial->dev, - port->bulk_out_endpointAddress), + usb_fill_bulk_urb(port->write_urb, serial->dev, + usb_sndbulkpipe(serial->dev, + port->bulk_out_endpointAddress), port->write_urb->transfer_buffer, count, - ((serial->type->write_bulk_callback) ? + ((serial->type->write_bulk_callback) ? serial->type->write_bulk_callback : - usb_serial_generic_write_bulk_callback), port); + usb_serial_generic_write_bulk_callback), + port); /* send the data out the bulk port */ port->write_urb_busy = 1; result = usb_submit_urb(port->write_urb, GFP_ATOMIC); if (result) { - dev_err(&port->dev, "%s - failed submitting write urb, error %d\n", __func__, result); - /* don't have to grab the lock here, as we will retry if != 0 */ + dev_err(&port->dev, + "%s - failed submitting write urb, error %d\n", + __func__, result); + /* don't have to grab the lock here, as we will + retry if != 0 */ port->write_urb_busy = 0; } else result = count; @@ -258,7 +267,7 @@ int usb_serial_generic_write(struct tty_struct *tty, return 0; } -int usb_serial_generic_write_room (struct tty_struct *tty) +int usb_serial_generic_write_room(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; struct usb_serial *serial = port->serial; @@ -302,17 +311,19 @@ static void resubmit_read_urb(struct usb_serial_port *port, gfp_t mem_flags) int result; /* Continue reading from device */ - usb_fill_bulk_urb (urb, serial->dev, - usb_rcvbulkpipe (serial->dev, - port->bulk_in_endpointAddress), + usb_fill_bulk_urb(urb, serial->dev, + usb_rcvbulkpipe(serial->dev, + port->bulk_in_endpointAddress), urb->transfer_buffer, urb->transfer_buffer_length, - ((serial->type->read_bulk_callback) ? - serial->type->read_bulk_callback : + ((serial->type->read_bulk_callback) ? + serial->type->read_bulk_callback : usb_serial_generic_read_bulk_callback), port); result = usb_submit_urb(urb, mem_flags); if (result) - dev_err(&port->dev, "%s - failed resubmitting read urb, error %d\n", __func__, result); + dev_err(&port->dev, + "%s - failed resubmitting read urb, error %d\n", + __func__, result); } /* Push data to tty layer and resubmit the bulk read URB */ @@ -349,16 +360,17 @@ void usb_serial_generic_read_bulk_callback(struct urb *urb) return; } - usb_serial_debug_data(debug, &port->dev, __func__, urb->actual_length, data); + usb_serial_debug_data(debug, &port->dev, __func__, + urb->actual_length, data); /* Throttle the device if requested by tty */ spin_lock_irqsave(&port->lock, flags); - if (!(port->throttled = port->throttle_req)) { + port->throttled = port->throttle_req; + if (!port->throttled) { spin_unlock_irqrestore(&port->lock, flags); flush_and_resubmit_read_urb(port); - } else { + } else spin_unlock_irqrestore(&port->lock, flags); - } } EXPORT_SYMBOL_GPL(usb_serial_generic_read_bulk_callback); @@ -413,15 +425,14 @@ void usb_serial_generic_unthrottle(struct tty_struct *tty) } } -void usb_serial_generic_shutdown (struct usb_serial *serial) +void usb_serial_generic_shutdown(struct usb_serial *serial) { int i; dbg("%s", __func__); /* stop reads and writes on all ports */ - for (i=0; i < serial->num_ports; ++i) { + for (i = 0; i < serial->num_ports; ++i) generic_cleanup(serial->port[i]); - } } |