diff options
| author | Johan Hovold <johan@kernel.org> | 2016-11-29 16:55:01 +0100 |
|---|---|---|
| committer | Johan Hovold <johan@kernel.org> | 2016-11-30 10:54:30 +0100 |
| commit | 6774d5f53271d5f60464f824748995b71da401ab (patch) | |
| tree | 741e831043964b455494fb9929a575c56310a574 /drivers/usb | |
| parent | 0c9bd6004d258d465a69c7612fa8c80d83f7865b (diff) | |
| download | linux-6774d5f53271d5f60464f824748995b71da401ab.tar.bz2 | |
USB: serial: kl5kusb105: fix open error path
Kill urbs and disable read before returning from open on failure to
retrieve the line state.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/serial/kl5kusb105.c | 33 |
1 files changed, 24 insertions, 9 deletions
diff --git a/drivers/usb/serial/kl5kusb105.c b/drivers/usb/serial/kl5kusb105.c index fc5d3a791e08..6f29bfadbe33 100644 --- a/drivers/usb/serial/kl5kusb105.c +++ b/drivers/usb/serial/kl5kusb105.c @@ -296,7 +296,7 @@ static int klsi_105_open(struct tty_struct *tty, struct usb_serial_port *port) rc = usb_serial_generic_open(tty, port); if (rc) { retval = rc; - goto exit; + goto err_free_cfg; } rc = usb_control_msg(port->serial->dev, @@ -315,17 +315,32 @@ static int klsi_105_open(struct tty_struct *tty, struct usb_serial_port *port) dev_dbg(&port->dev, "%s - enabled reading\n", __func__); rc = klsi_105_get_line_state(port, &line_state); - if (rc >= 0) { - spin_lock_irqsave(&priv->lock, flags); - priv->line_state = line_state; - spin_unlock_irqrestore(&priv->lock, flags); - dev_dbg(&port->dev, "%s - read line state 0x%lx\n", __func__, line_state); - retval = 0; - } else + if (rc < 0) { retval = rc; + goto err_disable_read; + } + + spin_lock_irqsave(&priv->lock, flags); + priv->line_state = line_state; + spin_unlock_irqrestore(&priv->lock, flags); + dev_dbg(&port->dev, "%s - read line state 0x%lx\n", __func__, + line_state); + + return 0; -exit: +err_disable_read: + usb_control_msg(port->serial->dev, + usb_sndctrlpipe(port->serial->dev, 0), + KL5KUSB105A_SIO_CONFIGURE, + USB_TYPE_VENDOR | USB_DIR_OUT, + KL5KUSB105A_SIO_CONFIGURE_READ_OFF, + 0, /* index */ + NULL, 0, + KLSI_TIMEOUT); + usb_serial_generic_close(port); +err_free_cfg: kfree(cfg); + return retval; } |