diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/serial/kl5kusb105.c | 63 |
1 files changed, 45 insertions, 18 deletions
diff --git a/drivers/usb/serial/kl5kusb105.c b/drivers/usb/serial/kl5kusb105.c index 3a7873806f46..731964b5ded6 100644 --- a/drivers/usb/serial/kl5kusb105.c +++ b/drivers/usb/serial/kl5kusb105.c @@ -212,10 +212,19 @@ static int klsi_105_get_line_state(struct usb_serial_port *port, unsigned long *line_state_p) { int rc; - __u8 status_buf[KLSI_STATUSBUF_LEN] = { -1, -1}; + u8 *status_buf; __u16 status; dev_info(&port->serial->dev->dev, "sending SIO Poll request\n"); + + status_buf = kmalloc(KLSI_STATUSBUF_LEN, GFP_KERNEL); + if (!status_buf) { + dev_err(&port->dev, "%s - out of memory for status buffer.\n", + __func__); + return -ENOMEM; + } + status_buf[0] = 0xff; + status_buf[1] = 0xff; rc = usb_control_msg(port->serial->dev, usb_rcvctrlpipe(port->serial->dev, 0), KL5KUSB105A_SIO_POLL, @@ -236,6 +245,8 @@ static int klsi_105_get_line_state(struct usb_serial_port *port, *line_state_p = klsi_105_status2linestate(status); } + + kfree(status_buf); return rc; } @@ -364,7 +375,7 @@ static int klsi_105_open(struct tty_struct *tty, struct usb_serial_port *port) int rc; int i; unsigned long line_state; - struct klsi_105_port_settings cfg; + struct klsi_105_port_settings *cfg; unsigned long flags; dbg("%s port %d", __func__, port->number); @@ -376,12 +387,18 @@ static int klsi_105_open(struct tty_struct *tty, struct usb_serial_port *port) * Then read the modem line control and store values in * priv->line_state. */ - cfg.pktlen = 5; - cfg.baudrate = kl5kusb105a_sio_b9600; - cfg.databits = kl5kusb105a_dtb_8; - cfg.unknown1 = 0; - cfg.unknown2 = 1; - klsi_105_chg_port_settings(port, &cfg); + cfg = kmalloc(sizeof(*cfg), GFP_KERNEL); + if (!cfg) { + dev_err(&port->dev, "%s - out of memory for config buffer.\n", + __func__); + return -ENOMEM; + } + cfg->pktlen = 5; + cfg->baudrate = kl5kusb105a_sio_b9600; + cfg->databits = kl5kusb105a_dtb_8; + cfg->unknown1 = 0; + cfg->unknown2 = 1; + klsi_105_chg_port_settings(port, cfg); /* set up termios structure */ spin_lock_irqsave(&priv->lock, flags); @@ -391,11 +408,11 @@ static int klsi_105_open(struct tty_struct *tty, struct usb_serial_port *port) priv->termios.c_lflag = tty->termios->c_lflag; for (i = 0; i < NCCS; i++) priv->termios.c_cc[i] = tty->termios->c_cc[i]; - priv->cfg.pktlen = cfg.pktlen; - priv->cfg.baudrate = cfg.baudrate; - priv->cfg.databits = cfg.databits; - priv->cfg.unknown1 = cfg.unknown1; - priv->cfg.unknown2 = cfg.unknown2; + priv->cfg.pktlen = cfg->pktlen; + priv->cfg.baudrate = cfg->baudrate; + priv->cfg.databits = cfg->databits; + priv->cfg.unknown1 = cfg->unknown1; + priv->cfg.unknown2 = cfg->unknown2; spin_unlock_irqrestore(&priv->lock, flags); /* READ_ON and urb submission */ @@ -441,6 +458,7 @@ static int klsi_105_open(struct tty_struct *tty, struct usb_serial_port *port) retval = rc; exit: + kfree(cfg); return retval; } /* klsi_105_open */ @@ -714,10 +732,17 @@ static void klsi_105_set_termios(struct tty_struct *tty, unsigned int old_iflag = old_termios->c_iflag; unsigned int cflag = tty->termios->c_cflag; unsigned int old_cflag = old_termios->c_cflag; - struct klsi_105_port_settings cfg; + struct klsi_105_port_settings *cfg; unsigned long flags; speed_t baud; + cfg = kmalloc(sizeof(*cfg), GFP_KERNEL); + if (!cfg) { + dev_err(&port->dev, "%s - out of memory for config buffer.\n", + __func__); + return; + } + /* lock while we are modifying the settings */ spin_lock_irqsave(&priv->lock, flags); @@ -793,11 +818,11 @@ static void klsi_105_set_termios(struct tty_struct *tty, case CS5: dbg("%s - 5 bits/byte not supported", __func__); spin_unlock_irqrestore(&priv->lock, flags); - return ; + goto err; case CS6: dbg("%s - 6 bits/byte not supported", __func__); spin_unlock_irqrestore(&priv->lock, flags); - return ; + goto err; case CS7: priv->cfg.databits = kl5kusb105a_dtb_7; break; @@ -856,11 +881,13 @@ static void klsi_105_set_termios(struct tty_struct *tty, #endif ; } - memcpy(&cfg, &priv->cfg, sizeof(cfg)); + memcpy(cfg, &priv->cfg, sizeof(*cfg)); spin_unlock_irqrestore(&priv->lock, flags); /* now commit changes to device */ - klsi_105_chg_port_settings(port, &cfg); + klsi_105_chg_port_settings(port, cfg); +err: + kfree(cfg); } /* klsi_105_set_termios */ |