net: axienet: stop interface during shutdown

On some platforms, such as iMX6 with PCIe devices, crashes or hangs can
occur if the axienet device continues to perform DMA transfers after
parent devices/busses have been shut down. Shut down the axienet
interface during its shutdown callback in order to avoid this.

Signed-off-by: Robert Hancock <hancock@sedsystems.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Robert Hancock 2019-06-06 16:28:19 -06:00 committed by David S. Miller
parent d05a9ed5c3
commit 70c50265c4

View File

@ -1797,9 +1797,23 @@ static int axienet_remove(struct platform_device *pdev)
return 0;
}
static void axienet_shutdown(struct platform_device *pdev)
{
struct net_device *ndev = platform_get_drvdata(pdev);
rtnl_lock();
netif_device_detach(ndev);
if (netif_running(ndev))
dev_close(ndev);
rtnl_unlock();
}
static struct platform_driver axienet_driver = {
.probe = axienet_probe,
.remove = axienet_remove,
.shutdown = axienet_shutdown,
.driver = {
.name = "xilinx_axienet",
.of_match_table = axienet_of_match,