diff options
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/serial/sierra.c | 130 |
1 files changed, 41 insertions, 89 deletions
diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c index 551c6ce..e7db203 100644 --- a/drivers/usb/serial/sierra.c +++ b/drivers/usb/serial/sierra.c @@ -418,7 +418,7 @@ static int sierra_open(struct usb_serial_port *port, struct file *filp) { struct sierra_port_private *portdata; struct usb_serial *serial = port->serial; - int i, err; + int i; struct urb *urb; int result; __u16 set_mode_dzero = 0x0000; @@ -434,7 +434,7 @@ static int sierra_open(struct usb_serial_port *port, struct file *filp) /* Reset low level data toggle and start reading from endpoints */ for (i = 0; i < N_IN_URB; i++) { urb = portdata->in_urbs[i]; - if (! urb) + if (!urb) continue; if (urb->dev != serial->dev) { dbg("%s: dev %p != %p", __FUNCTION__, @@ -448,11 +448,10 @@ static int sierra_open(struct usb_serial_port *port, struct file *filp) */ 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, - urb->transfer_buffer_length); + result = usb_submit_urb(urb, GFP_KERNEL); + if (result) { + dev_err(&port->dev, "submit urb %d failed (%d) %d", + i, result, urb->transfer_buffer_length); } } @@ -466,7 +465,14 @@ static int sierra_open(struct usb_serial_port *port, struct file *filp) sierra_send_setup(port); - return (0); + /* start up the interrupt endpoint if we have one */ + if (port->interrupt_in_urb) { + result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); + if (result) + dev_err(&port->dev, "submit irq_in urb failed %d", + result); + } + return 0; } static void sierra_close(struct usb_serial_port *port, struct file *filp) @@ -486,62 +492,21 @@ static void sierra_close(struct usb_serial_port *port, struct file *filp) /* Stop reading/writing urbs */ for (i = 0; i < N_IN_URB; i++) - usb_unlink_urb(portdata->in_urbs[i]); - } - port->tty = NULL; -} - -/* Helper functions used by sierra_setup_urbs */ -static struct urb *sierra_setup_urb(struct usb_serial *serial, int endpoint, - int dir, void *ctx, char *buf, int len, - usb_complete_t callback) -{ - struct urb *urb; - - if (endpoint == -1) - return NULL; /* endpoint not needed */ - - urb = usb_alloc_urb(0, GFP_KERNEL); /* No ISO */ - if (urb == NULL) { - dbg("%s: alloc for endpoint %d failed.", __FUNCTION__, endpoint); - return NULL; + usb_kill_urb(portdata->in_urbs[i]); } - /* Fill URB using supplied data. */ - usb_fill_bulk_urb(urb, serial->dev, - usb_sndbulkpipe(serial->dev, endpoint) | dir, - buf, len, callback, ctx); - - return urb; -} + usb_kill_urb(port->interrupt_in_urb); -/* Setup urbs */ -static void sierra_setup_urbs(struct usb_serial *serial) -{ - int i,j; - struct usb_serial_port *port; - struct sierra_port_private *portdata; - - dbg("%s", __FUNCTION__); - - for (i = 0; i < serial->num_ports; i++) { - port = serial->port[i]; - portdata = usb_get_serial_port_data(port); - - /* Do indat endpoints first */ - for (j = 0; j < N_IN_URB; ++j) { - portdata->in_urbs[j] = sierra_setup_urb (serial, - port->bulk_in_endpointAddress, USB_DIR_IN, port, - portdata->in_buffer[j], IN_BUFLEN, sierra_indat_callback); - } - } + port->tty = NULL; } static int sierra_startup(struct usb_serial *serial) { - int i, err; struct usb_serial_port *port; struct sierra_port_private *portdata; + struct urb *urb; + int i; + int j; dbg("%s", __FUNCTION__); @@ -558,16 +523,24 @@ static int sierra_startup(struct usb_serial *serial) usb_set_serial_port_data(port, portdata); - if (! port->interrupt_in_urb) - continue; - err = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); - if (err) - dbg("%s: submit irq_in urb failed %d", - __FUNCTION__, err); + /* initialize the in urbs */ + for (j = 0; j < N_IN_URB; ++j) { + urb = usb_alloc_urb(0, GFP_KERNEL); + if (urb == NULL) { + dbg("%s: alloc for in port failed.", + __FUNCTION__); + continue; + } + /* Fill URB using supplied data. */ + usb_fill_bulk_urb(urb, serial->dev, + usb_rcvbulkpipe(serial->dev, + port->bulk_in_endpointAddress), + portdata->in_buffer[j], IN_BUFLEN, + sierra_indat_callback, port); + portdata->in_urbs[j] = urb; + } } - sierra_setup_urbs(serial); - return 0; } @@ -579,20 +552,6 @@ static void sierra_shutdown(struct usb_serial *serial) dbg("%s", __FUNCTION__); - /* Stop reading/writing urbs */ - for (i = 0; i < serial->num_ports; ++i) { - port = serial->port[i]; - if (!port) - continue; - portdata = usb_get_serial_port_data(port); - if (!portdata) - continue; - - for (j = 0; j < N_IN_URB; j++) - usb_unlink_urb(portdata->in_urbs[j]); - } - - /* Now free them */ for (i = 0; i < serial->num_ports; ++i) { port = serial->port[i]; if (!port) @@ -602,19 +561,12 @@ static void sierra_shutdown(struct usb_serial *serial) continue; for (j = 0; j < N_IN_URB; j++) { - if (portdata->in_urbs[j]) { - usb_free_urb(portdata->in_urbs[j]); - portdata->in_urbs[j] = NULL; - } + usb_kill_urb(portdata->in_urbs[j]); + usb_free_urb(portdata->in_urbs[j]); + portdata->in_urbs[j] = NULL; } - } - - /* Now free per port private data */ - for (i = 0; i < serial->num_ports; i++) { - port = serial->port[i]; - if (!port) - continue; - kfree(usb_get_serial_port_data(port)); + kfree(portdata); + usb_set_serial_port_data(port, NULL); } } |