bnx2: return PCI_ERS_RESULT_DISCONNECT on permanent failure

PCI drivers that implement the struct pci_error_handlers' error_detected
callback should return PCI_ERS_RESULT_DISCONNECT if the state passed in is
pci_channel_io_perm_failure. This patch fixes the issue for bnx2.

Signed-off-by: Dean Nelson <dnelson@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/bnx2.c

diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c
index cec1b17..756d4b4 100644
--- a/drivers/net/bnx2.c
+++ b/drivers/net/bnx2.c
@@ -8199,6 +8199,11 @@
 	rtnl_lock();
 	netif_device_detach(dev);
 
+	if (state == pci_channel_io_perm_failure) {
+		rtnl_unlock();
+		return PCI_ERS_RESULT_DISCONNECT;
+	}
+
 	if (netif_running(dev)) {
 		bnx2_netif_stop(bp);
 		del_timer_sync(&bp->timer);