Hello
I am porting a usb test driver from kernel version 3.0.8 to
kernel version 3.7.1.
The release function was working on V3.0.0. On V3.7.1, the
private data stored in serial->port.device->p->driver_data
seems already to be deallocated (or never correctly be
allocated): usb_get_serial_port_data returns a null pointer.
Is there any function as part of the usb kernel framework
that releases the private data before calling the release
function ?
static void usbrsa_test_release(struct usb_serial *serial)
{
int i;
struct usbrsa_port_private* priv;
dev_dbg(&serial->dev->dev,"%s():entered\n",__func__);
printk("%s():entered\n",__func__);
for (i = 0; i < serial->num_ports; i++)
{
pr_debug("%s():portnum=%d\n",__func__,i);
printk("%s():portnum=%d\n",__func__,i);
priv = usb_get_serial_port_data(serial->port[i]);
if (priv == NULL)
{
printk("%s: ERROR: priv == NULL\n",__func__);
}
else
{
release_status_urb(priv);
release_write_urb(priv);
release_read_urb(priv);
kfree(priv);
}
}
}
Thanks
Tilman
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