diff options
Diffstat (limited to 'drivers/usb/serial/opticon.c')
| -rw-r--r-- | drivers/usb/serial/opticon.c | 20 |
1 files changed, 8 insertions, 12 deletions
diff --git a/drivers/usb/serial/opticon.c b/drivers/usb/serial/opticon.c index 4cdb975caa8..ed01f3b2de8 100644 --- a/drivers/usb/serial/opticon.c +++ b/drivers/usb/serial/opticon.c @@ -13,6 +13,7 @@ #include <linux/init.h> #include <linux/tty.h> #include <linux/tty_driver.h> +#include <linux/slab.h> #include <linux/tty_flip.h> #include <linux/serial.h> #include <linux/module.h> @@ -22,7 +23,7 @@ static int debug; -static struct usb_device_id id_table[] = { +static const struct usb_device_id id_table[] = { { USB_DEVICE(0x065a, 0x0009) }, { }, }; @@ -55,7 +56,6 @@ static void opticon_bulk_callback(struct urb *urb) int status = urb->status; struct tty_struct *tty; int result; - int available_room = 0; int data_length; dbg("%s - port %d", __func__, port->number); @@ -96,13 +96,9 @@ static void opticon_bulk_callback(struct urb *urb) /* real data, send it to the tty layer */ tty = tty_port_tty_get(&port->port); if (tty) { - available_room = tty_buffer_request_room(tty, - data_length); - if (available_room) { - tty_insert_flip_string(tty, data, - available_room); - tty_flip_buffer_push(tty); - } + tty_insert_flip_string(tty, data, + data_length); + tty_flip_buffer_push(tty); tty_kref_put(tty); } } else { @@ -120,7 +116,7 @@ static void opticon_bulk_callback(struct urb *urb) } } else { dev_dbg(&priv->udev->dev, - "Improper ammount of data received from the device, " + "Improper amount of data received from the device, " "%d bytes", urb->actual_length); } @@ -217,7 +213,7 @@ static int opticon_write(struct tty_struct *tty, struct usb_serial_port *port, spin_lock_irqsave(&priv->lock, flags); if (priv->outstanding_urbs > URB_UPPER_LIMIT) { spin_unlock_irqrestore(&priv->lock, flags); - dbg("%s - write limit hit\n", __func__); + dbg("%s - write limit hit", __func__); return 0; } priv->outstanding_urbs++; @@ -288,7 +284,7 @@ static int opticon_write_room(struct tty_struct *tty) spin_lock_irqsave(&priv->lock, flags); if (priv->outstanding_urbs > URB_UPPER_LIMIT * 2 / 3) { spin_unlock_irqrestore(&priv->lock, flags); - dbg("%s - write limit hit\n", __func__); + dbg("%s - write limit hit", __func__); return 0; } spin_unlock_irqrestore(&priv->lock, flags); |