Patch #3/4.
Thanks
Guennadi
---
Guennadi Liakhovetski
Prevent NULL dereference when used as a USB-serial console.
Signed-off-by: Guennadi Liakhovetski <[EMAIL PROTECTED]>
diff -u a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
--- a/drivers/usb/serial/ftdi_sio.c 30 Mar 2006 19:18:07 -0000
+++ b/drivers/usb/serial/ftdi_sio.c 11 Apr 2006 18:12:53 -0000
@@ -1254,7 +1254,6 @@
static int ftdi_open (struct usb_serial_port *port, struct file *filp)
{ /* ftdi_open */
- struct termios tmp_termios;
struct usb_device *dev = port->serial->dev;
struct ftdi_private *priv = usb_get_serial_port_data(port);
unsigned long flags;
@@ -1264,8 +1263,8 @@
dbg("%s", __FUNCTION__);
-
- port->tty->low_latency = (priv->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
+ if (port->tty)
+ port->tty->low_latency = (priv->flags & ASYNC_LOW_LATENCY) ? 1
: 0;
/* No error checking for this (will get errors later anyway) */
/* See ftdi_sio.h for description of what is reset */
@@ -1279,7 +1278,8 @@
This is same behaviour as serial.c/rs_open() - Kuba */
/* ftdi_set_termios will send usb control messages */
- ftdi_set_termios(port, &tmp_termios);
+ if (port->tty)
+ ftdi_set_termios(port, NULL);
/* FIXME: Flow control might be enabled, so it should be checked -
we have no control of defaults! */
@@ -1860,7 +1860,7 @@
err("%s urb failed to set baudrate", __FUNCTION__);
}
/* Ensure RTS and DTR are raised when baudrate changed from 0 */
- if ((old_termios->c_cflag & CBAUD) == B0) {
+ if (!old_termios || (old_termios->c_cflag & CBAUD) == B0) {
set_mctrl(port, TIOCM_DTR | TIOCM_RTS);
}
}
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