[PATCH 001] USB: Error handling bug fix for serial_open()

[Richard Pearman]

From: Richard Pearman <richard.pearman@xxxxxxxxxxxxxxxx>
From: Greg Breen <greg.breen@xxxxxxxxxxxxxxxx>

When an error occurs in serial_open() ensure that port->tty and 
tty->driver_data are set  to NULL, if previously assigned a value in the 
function.

Signed-off-by: Richard S. Pearman <richard.pearman@xxxxxxxxxxxxxxxx>
---
--- linux-2.6.17.1/drivers/usb/serial/usb-serial.c.orig    Mon Oct 22 
11:12:29 2007
+++ linux-2.6.17.1/drivers/usb/serial/usb-serial.c    Mon Oct 22 
11:12:23 2007
@@ -230,6 +230,8 @@ bailout_module_put:
    module_put(serial->type->driver.owner);
bailout_mutex_unlock:
    port->open_count = 0;
+    port->tty = NULL;
+    tty->driver_data = NULL;   
    mutex_unlock(&port->mutex);
bailout_kref_put:
    kref_put(&serial->kref, destroy_serial);
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email;internet:richard.pearman@xxxxxxxxxxxxxxxx
title:Senior embedded systems  engineer
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