Commit 07340eaf authored by Johan Hovold's avatar Johan Hovold Committed by Sasha Levin

USB: serial: kl5kusb105: fix open error path

[ Upstream commit 6774d5f5 ]

Kill urbs and disable read before returning from open on failure to
retrieve the line state.

Fixes: 1da177e4 ("Linux-2.6.12-rc2")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: default avatarJohan Hovold <johan@kernel.org>
Signed-off-by: default avatarSasha Levin <alexander.levin@verizon.com>
parent b4fa7414
......@@ -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;
}
......
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