static int pcan_usb_stop(struct pcandev *dev)
{
int err = 0;
USB_PORT *u = &dev->port.usb;
struct pcan_usb_interface *usb_if = u->usb_if;
DPRINTK(KERN_DEBUG "%s: %s(CAN#%d), minor=%d\n",
DEVICE_NAME, __FUNCTION__, u->dev_ctrl_index, dev->nMinor);
if (usb_if->device_ctrl_close)
err = usb_if->device_ctrl_close(dev);
err = usb_if->device_ctrl_set_bus_off(dev);
#if 1
/* let bus_off handler decide if we should wait or not */
#else
// wait until all has settled
mdelay(5);
#endif
// unlink URBs for device/controller
pcan_kill_sync_urb(&u->write_data);
DPRINTK(KERN_ERR "%s: have still %d active URBs on interface\n",
DEVICE_NAME, atomic_read(&usb_if->active_urbs));
return err;
}
static void pcan_usb_plugout(struct usb_interface *interface)
{
struct pcan_usb_interface *usb_if = usb_get_intfdata(interface);
if (usb_if)
{
int c;
struct pcandev *dev;
for (dev=&usb_if->dev[c=0]; c < usb_if->dev_ctrl_count; c++, dev++)
{
DPRINTK(KERN_DEBUG "%s: %s(%d)\n",
DEVICE_NAME, __FUNCTION__, dev->nMinor);
#ifdef NETDEV_SUPPORT
pcan_usb_plugout_netdev(dev);
#endif
// mark this device as plugged out
dev->ucPhysicallyInstalled = 0;
// do not remove resources if the device is still in use
if (!dev->nOpenPaths)
pcan_usb_cleanup(dev);
pcan_kill_sync_urb(&dev->port.usb.write_data);
interface->minor = dev->nMinor;
usb_deregister_dev(interface, &pcan_class);
}
pcan_kill_sync_urb(&usb_if->urb_cmd_sync);
pcan_kill_sync_urb(&usb_if->urb_cmd_async);
pcan_kill_sync_urb(&usb_if->read_data);
kfree(usb_if->read_buffer_addr[0]);
if (usb_if->device_free)
usb_if->device_free(usb_if);
usb_reset_device(usb_if->usb_dev);
kfree(usb_if);
usb_set_intfdata(interface, NULL);
}
}
static void pcan_usb_plugout(struct usb_interface *interface)
{
struct pcan_usb_interface *usb_if = usb_get_intfdata(interface);
DPRINTK(KERN_DEBUG "%s: %s(): usb_if=%p\n",
DEVICE_NAME, __func__, usb_if);
if (usb_if) {
int c;
struct pcandev *dev;
for (dev=&usb_if->dev[c=0]; c < usb_if->dev_ctrl_count;
c++, dev++) {
DPRINTK(KERN_DEBUG "%s: %s(%d)\n",
DEVICE_NAME, __func__, dev->nMinor);
#ifdef PCAN_DEV_USES_ALT_NUM
pcan_sysfs_del_attrs(dev->mapped_dev,
pcan_usb_sysfs_attrs[c]);
#endif
#ifdef NETDEV_SUPPORT
pcan_usb_plugout_netdev(dev);
#endif
// mark this device as plugged out
dev->ucPhysicallyInstalled = 0;
#if 0
// do not remove resources if the device is still in use
if (!dev->nOpenPaths)
pcan_usb_cleanup(dev);
#else
/*
* Should close all dev resources EVEN if the device is
* in use, otherwise application may not be noticed
* that the device was removed:
* CAN_Open(); while (1) CAN_Read(h);
*/
pcan_usb_cleanup(dev);
#endif
/*
* don't forget to remove link to USB interface object
* from the device object (the USB interface will be
* freed next)
*/
dev->port.usb.usb_if = NULL;
pcan_kill_sync_urb(&dev->port.usb.write_data);
interface->minor = dev->nMinor;
usb_deregister_dev(interface, &pcan_class);
}
pcan_kill_sync_urb(&usb_if->urb_cmd_sync);
pcan_kill_sync_urb(&usb_if->urb_cmd_async);
pcan_kill_sync_urb(&usb_if->read_data);
kfree(usb_if->read_buffer_addr[0]);
kfree(usb_if->cout_baddr);
if (usb_if->device_free)
usb_if->device_free(usb_if);
usb_reset_device(usb_if->usb_dev);
kfree(usb_if);
usb_set_intfdata(interface, NULL);
}
}
