Hi,
the sierra driver does not directly use usb_kill_urb(). It uses a wrapper.
This wrapper means that callbacks which are running are not killed during
close, resubmitting and illicitly pushing data into the tty layer.
The whole purpose of usb_kill_urb() is subverted. The wrapper must be removed.
The same problem as the option driver.
Regards
Oliver
Signed-off-by: Oliver Neukum <[EMAIL PROTECTED]>
-----
--- linux-2.6.21-rc4/drivers/usb/serial/sierra.c.alt 2007-03-20
13:46:15.000000000 +0100
+++ linux-2.6.21-rc4/drivers/usb/serial/sierra.c 2007-03-20
13:46:22.000000000 +0100
@@ -456,12 +456,6 @@
return (0);
}
-static inline void stop_urb(struct urb *urb)
-{
- if (urb && urb->status == -EINPROGRESS)
- usb_kill_urb(urb);
-}
-
static void sierra_close(struct usb_serial_port *port, struct file *filp)
{
int i;
@@ -479,9 +473,9 @@
/* Stop reading/writing urbs */
for (i = 0; i < N_IN_URB; i++)
- stop_urb(portdata->in_urbs[i]);
+ usb_unlink_urb(portdata->in_urbs[i]);
for (i = 0; i < N_OUT_URB; i++)
- stop_urb(portdata->out_urbs[i]);
+ usb_unlink_urb(portdata->out_urbs[i]);
}
port->tty = NULL;
}
@@ -585,9 +579,9 @@
port = serial->port[i];
portdata = usb_get_serial_port_data(port);
for (j = 0; j < N_IN_URB; j++)
- stop_urb(portdata->in_urbs[j]);
+ usb_unlink_urb(portdata->in_urbs[j]);
for (j = 0; j < N_OUT_URB; j++)
- stop_urb(portdata->out_urbs[j]);
+ usb_unlink_urb(portdata->out_urbs[j]);
}
/* Now free them */
-------------------------------------------------------------------------
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