diff options
Diffstat (limited to 'drivers/usb/serial/option.c')
-rw-r--r-- | drivers/usb/serial/option.c | 203 |
1 files changed, 90 insertions, 113 deletions
diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index e925640..92d0f92 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -45,29 +45,29 @@ #include "usb-serial.h" /* Function prototypes */ -static int option_open (struct usb_serial_port *port, struct file *filp); -static void option_close (struct usb_serial_port *port, struct file *filp); -static int option_startup (struct usb_serial *serial); -static void option_shutdown (struct usb_serial *serial); -static void option_rx_throttle (struct usb_serial_port *port); -static void option_rx_unthrottle (struct usb_serial_port *port); -static int option_write_room (struct usb_serial_port *port); +static int option_open(struct usb_serial_port *port, struct file *filp); +static void option_close(struct usb_serial_port *port, struct file *filp); +static int option_startup(struct usb_serial *serial); +static void option_shutdown(struct usb_serial *serial); +static void option_rx_throttle(struct usb_serial_port *port); +static void option_rx_unthrottle(struct usb_serial_port *port); +static int option_write_room(struct usb_serial_port *port); static void option_instat_callback(struct urb *urb, struct pt_regs *regs); -static int option_write (struct usb_serial_port *port, - const unsigned char *buf, int count); +static int option_write(struct usb_serial_port *port, + const unsigned char *buf, int count); -static int option_chars_in_buffer (struct usb_serial_port *port); -static int option_ioctl (struct usb_serial_port *port, struct file *file, - unsigned int cmd, unsigned long arg); -static void option_set_termios (struct usb_serial_port *port, - struct termios *old); -static void option_break_ctl (struct usb_serial_port *port, int break_state); -static int option_tiocmget (struct usb_serial_port *port, struct file *file); -static int option_tiocmset (struct usb_serial_port *port, struct file *file, - unsigned int set, unsigned int clear); -static int option_send_setup (struct usb_serial_port *port); +static int option_chars_in_buffer(struct usb_serial_port *port); +static int option_ioctl(struct usb_serial_port *port, struct file *file, + unsigned int cmd, unsigned long arg); +static void option_set_termios(struct usb_serial_port *port, + struct termios *old); +static void option_break_ctl(struct usb_serial_port *port, int break_state); +static int option_tiocmget(struct usb_serial_port *port, struct file *file); +static int option_tiocmset(struct usb_serial_port *port, struct file *file, + unsigned int set, unsigned int clear); +static int option_send_setup(struct usb_serial_port *port); /* Vendor and product IDs */ #define OPTION_VENDOR_ID 0x0AF0 @@ -76,7 +76,6 @@ static int option_send_setup (struct usb_serial_port *port); #define OPTION_PRODUCT_FUSION 0x6000 #define OPTION_PRODUCT_FUSION2 0x6300 - static struct usb_device_id option_ids[] = { { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_OLD) }, { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUSION) }, @@ -129,7 +128,6 @@ static int debug; #define debug 0 #endif - /* per port private data */ #define N_IN_URB 4 @@ -156,10 +154,8 @@ struct option_port_private { unsigned long tx_start_time[N_OUT_URB]; }; - /* Functions used by new usb-serial code. */ -static int __init -option_init (void) +static int __init option_init(void) { int retval; retval = usb_serial_register(&option_3port_device); @@ -179,8 +175,7 @@ failed_3port_device_register: return retval; } -static void __exit -option_exit (void) +static void __exit option_exit(void) { usb_deregister (&option_driver); usb_serial_deregister (&option_3port_device); @@ -189,39 +184,31 @@ option_exit (void) module_init(option_init); module_exit(option_exit); -static void -option_rx_throttle (struct usb_serial_port *port) +static void option_rx_throttle(struct usb_serial_port *port) { dbg("%s", __FUNCTION__); } - -static void -option_rx_unthrottle (struct usb_serial_port *port) +static void option_rx_unthrottle(struct usb_serial_port *port) { dbg("%s", __FUNCTION__); } - -static void -option_break_ctl (struct usb_serial_port *port, int break_state) +static void option_break_ctl(struct usb_serial_port *port, int break_state) { /* Unfortunately, I don't know how to send a break */ dbg("%s", __FUNCTION__); } - -static void -option_set_termios (struct usb_serial_port *port, - struct termios *old_termios) +static void option_set_termios(struct usb_serial_port *port, + struct termios *old_termios) { dbg("%s", __FUNCTION__); option_send_setup(port); } -static int -option_tiocmget (struct usb_serial_port *port, struct file *file) +static int option_tiocmget(struct usb_serial_port *port, struct file *file) { unsigned int value; struct option_port_private *portdata; @@ -238,9 +225,8 @@ option_tiocmget (struct usb_serial_port *port, struct file *file) return value; } -static int -option_tiocmset (struct usb_serial_port *port, struct file *file, - unsigned int set, unsigned int clear) +static int option_tiocmset(struct usb_serial_port *port, struct file *file, + unsigned int set, unsigned int clear) { struct option_port_private *portdata; @@ -258,17 +244,15 @@ option_tiocmset (struct usb_serial_port *port, struct file *file, return option_send_setup(port); } -static int -option_ioctl (struct usb_serial_port *port, struct file *file, - unsigned int cmd, unsigned long arg) +static int option_ioctl(struct usb_serial_port *port, struct file *file, + unsigned int cmd, unsigned long arg) { return -ENOIOCTLCMD; } /* Write */ -static int -option_write (struct usb_serial_port *port, - const unsigned char *buf, int count) +static int option_write(struct usb_serial_port *port, + const unsigned char *buf, int count) { struct option_port_private *portdata; int i; @@ -289,28 +273,29 @@ option_write (struct usb_serial_port *port, this_urb = portdata->out_urbs[i]; if (this_urb->status == -EINPROGRESS) { - if (this_urb->transfer_flags & URB_ASYNC_UNLINK) - continue; - if (time_before(jiffies, portdata->tx_start_time[i] + 10 * HZ)) + if (time_before(jiffies, + portdata->tx_start_time[i] + 10 * HZ)) continue; - this_urb->transfer_flags |= URB_ASYNC_UNLINK; usb_unlink_urb(this_urb); continue; } if (this_urb->status != 0) - dbg("usb_write %p failed (err=%d)", this_urb, this_urb->status); + dbg("usb_write %p failed (err=%d)", + this_urb, this_urb->status); - dbg("%s: endpoint %d buf %d", __FUNCTION__, usb_pipeendpoint(this_urb->pipe), i); + dbg("%s: endpoint %d buf %d", __FUNCTION__, + usb_pipeendpoint(this_urb->pipe), i); /* send the data */ memcpy (this_urb->transfer_buffer, buf, todo); this_urb->transfer_buffer_length = todo; - this_urb->transfer_flags &= ~URB_ASYNC_UNLINK; this_urb->dev = port->serial->dev; err = usb_submit_urb(this_urb, GFP_ATOMIC); if (err) { - dbg("usb_submit_urb %p (write bulk) failed (%d, has %d)", this_urb, err, this_urb->status); + dbg("usb_submit_urb %p (write bulk) failed " + "(%d, has %d)", this_urb, + err, this_urb->status); continue; } portdata->tx_start_time[i] = jiffies; @@ -323,8 +308,7 @@ option_write (struct usb_serial_port *port, return count; } -static void -option_indat_callback (struct urb *urb, struct pt_regs *regs) +static void option_indat_callback(struct urb *urb, struct pt_regs *regs) { int i, err; int endpoint; @@ -357,14 +341,14 @@ option_indat_callback (struct urb *urb, struct pt_regs *regs) if (port->open_count && urb->status != -ESHUTDOWN) { err = usb_submit_urb(urb, GFP_ATOMIC); if (err) - printk(KERN_ERR "%s: resubmit read urb failed. (%d)", __FUNCTION__, err); + printk(KERN_ERR "%s: resubmit read urb failed. " + "(%d)", __FUNCTION__, err); } } return; } -static void -option_outdat_callback (struct urb *urb, struct pt_regs *regs) +static void option_outdat_callback(struct urb *urb, struct pt_regs *regs) { struct usb_serial_port *port; @@ -376,8 +360,7 @@ option_outdat_callback (struct urb *urb, struct pt_regs *regs) schedule_work(&port->work); } -static void -option_instat_callback (struct urb *urb, struct pt_regs *regs) +static void option_instat_callback(struct urb *urb, struct pt_regs *regs) { int err; struct usb_serial_port *port = (struct usb_serial_port *) urb->context; @@ -395,10 +378,12 @@ option_instat_callback (struct urb *urb, struct pt_regs *regs) dbg("%s: NULL req_pkt\n", __FUNCTION__); return; } - if ((req_pkt->bRequestType == 0xA1) && (req_pkt->bRequest == 0x20)) { + if ((req_pkt->bRequestType == 0xA1) && + (req_pkt->bRequest == 0x20)) { int old_dcd_state; unsigned char signals = *((unsigned char *) - urb->transfer_buffer + sizeof(struct usb_ctrlrequest)); + urb->transfer_buffer + + sizeof(struct usb_ctrlrequest)); dbg("%s: signal x%x", __FUNCTION__, signals); @@ -408,12 +393,13 @@ option_instat_callback (struct urb *urb, struct pt_regs *regs) portdata->dsr_state = ((signals & 0x02) ? 1 : 0); portdata->ri_state = ((signals & 0x08) ? 1 : 0); - if (port->tty && !C_CLOCAL(port->tty) - && old_dcd_state && !portdata->dcd_state) { + if (port->tty && !C_CLOCAL(port->tty) && + old_dcd_state && !portdata->dcd_state) tty_hangup(port->tty); - } - } else - dbg("%s: type %x req %x", __FUNCTION__, req_pkt->bRequestType,req_pkt->bRequest); + } else { + dbg("%s: type %x req %x", __FUNCTION__, + req_pkt->bRequestType,req_pkt->bRequest); + } } else dbg("%s: error %d", __FUNCTION__, urb->status); @@ -422,13 +408,12 @@ option_instat_callback (struct urb *urb, struct pt_regs *regs) urb->dev = serial->dev; err = usb_submit_urb(urb, GFP_ATOMIC); if (err) - dbg("%s: resubmit intr urb failed. (%d)", __FUNCTION__, err); + dbg("%s: resubmit intr urb failed. (%d)", + __FUNCTION__, err); } } - -static int -option_write_room (struct usb_serial_port *port) +static int option_write_room(struct usb_serial_port *port) { struct option_port_private *portdata; int i; @@ -447,9 +432,7 @@ option_write_room (struct usb_serial_port *port) return data_len; } - -static int -option_chars_in_buffer (struct usb_serial_port *port) +static int option_chars_in_buffer(struct usb_serial_port *port) { struct option_port_private *portdata; int i; @@ -467,9 +450,7 @@ option_chars_in_buffer (struct usb_serial_port *port) return data_len; } - -static int -option_open (struct usb_serial_port *port, struct file *filp) +static int option_open(struct usb_serial_port *port, struct file *filp) { struct option_port_private *portdata; struct usb_serial *serial = port->serial; @@ -490,17 +471,21 @@ option_open (struct usb_serial_port *port, struct file *filp) if (! urb) continue; if (urb->dev != serial->dev) { - dbg("%s: dev %p != %p", __FUNCTION__, urb->dev, serial->dev); + dbg("%s: dev %p != %p", __FUNCTION__, + urb->dev, serial->dev); continue; } - /* make sure endpoint data toggle is synchronized with the device */ - + /* + * make sure endpoint data toggle is synchronized with the + * device + */ usb_clear_halt(urb->dev, urb->pipe); err = usb_submit_urb(urb, GFP_KERNEL); if (err) { - dbg("%s: submit urb %d failed (%d) %d", __FUNCTION__, i, err, + dbg("%s: submit urb %d failed (%d) %d", + __FUNCTION__, i, err, urb->transfer_buffer_length); } } @@ -511,7 +496,8 @@ option_open (struct usb_serial_port *port, struct file *filp) if (! urb) continue; urb->dev = serial->dev; - /* usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe), usb_pipeout(urb->pipe), 0); */ + /* usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe), + usb_pipeout(urb->pipe), 0); */ } port->tty->low_latency = 1; @@ -521,17 +507,13 @@ option_open (struct usb_serial_port *port, struct file *filp) return (0); } -static inline void -stop_urb (struct urb *urb) +static inline void stop_urb(struct urb *urb) { - if (urb && urb->status == -EINPROGRESS) { - urb->transfer_flags &= ~URB_ASYNC_UNLINK; + if (urb && urb->status == -EINPROGRESS) usb_kill_urb(urb); - } } -static void -option_close (struct usb_serial_port *port, struct file *filp) +static void option_close(struct usb_serial_port *port, struct file *filp) { int i; struct usb_serial *serial = port->serial; @@ -555,12 +537,10 @@ option_close (struct usb_serial_port *port, struct file *filp) port->tty = NULL; } - /* Helper functions used by option_setup_urbs */ -static struct urb * -option_setup_urb (struct usb_serial *serial, int endpoint, - int dir, void *ctx, char *buf, int len, - void (*callback)(struct urb *, struct pt_regs *regs)) +static struct urb *option_setup_urb(struct usb_serial *serial, int endpoint, + int dir, void *ctx, char *buf, int len, + void (*callback)(struct urb *, struct pt_regs *regs)) { struct urb *urb; @@ -582,8 +562,7 @@ option_setup_urb (struct usb_serial *serial, int endpoint, } /* Setup urbs */ -static void -option_setup_urbs (struct usb_serial *serial) +static void option_setup_urbs(struct usb_serial *serial) { int j; struct usb_serial_port *port; @@ -609,9 +588,7 @@ option_setup_urbs (struct usb_serial *serial) } } - -static int -option_send_setup (struct usb_serial_port *port) +static int option_send_setup(struct usb_serial_port *port) { struct usb_serial *serial = port->serial; struct option_port_private *portdata; @@ -627,16 +604,15 @@ option_send_setup (struct usb_serial_port *port) if (portdata->rts_state) val |= 0x02; - return usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), - 0x22,0x21,val,0,NULL,0,USB_CTRL_SET_TIMEOUT); + return usb_control_msg(serial->dev, + usb_rcvctrlpipe(serial->dev, 0), + 0x22,0x21,val,0,NULL,0,USB_CTRL_SET_TIMEOUT); } return 0; } - -static int -option_startup (struct usb_serial *serial) +static int option_startup(struct usb_serial *serial) { int i, err; struct usb_serial_port *port; @@ -647,9 +623,10 @@ option_startup (struct usb_serial *serial) /* Now setup per port private data */ for (i = 0; i < serial->num_ports; i++) { port = serial->port[i]; - portdata = kmalloc(sizeof(struct option_port_private), GFP_KERNEL); + portdata = kmalloc(sizeof(*portdata), GFP_KERNEL); if (!portdata) { - dbg("%s: kmalloc for option_port_private (%d) failed!.", __FUNCTION__, i); + dbg("%s: kmalloc for option_port_private (%d) failed!.", + __FUNCTION__, i); return (1); } memset(portdata, 0, sizeof(struct option_port_private)); @@ -660,7 +637,8 @@ option_startup (struct usb_serial *serial) continue; err = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); if (err) - dbg("%s: submit irq_in urb failed %d", __FUNCTION__, err); + dbg("%s: submit irq_in urb failed %d", + __FUNCTION__, err); } option_setup_urbs(serial); @@ -668,8 +646,7 @@ option_startup (struct usb_serial *serial) return (0); } -static void -option_shutdown (struct usb_serial *serial) +static void option_shutdown(struct usb_serial *serial) { int i, j; struct usb_serial_port *port; |