e1000: add dropped DMA receive enable back in for WoL

commit b868179c47e9e8eadcd04c1f3105998e528988a3 upstream.

Commit d5bc77a223b0e9b9dfb002048d2b34a79e7d0b48 broke Wake-on-LAN by
inadvertently dropping the enabling of DMA receives.

Restore the enabling of DMA receives for WoL.

This is applicable to 3.1+ stable trees.

Reported-by: Tobias Klausmann <klausman@schwarzvogel.de>
Signed-off-by: Dean Nelson <dnelson@redhat.com>
Tested-by: Tobias Klausmann <klausman@schwarzvogel.de>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

diff --git a/drivers/net/ethernet/intel/e1000/e1000_main.c b/drivers/net/ethernet/intel/e1000/e1000_main.c
index de00805..0549261 100644 (file)
--- a/drivers/net/ethernet/intel/e1000/e1000_main.c
+++ b/drivers/net/ethernet/intel/e1000/e1000_main.c
@@ -4743,12 +4743,14 @@ static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake)
                e1000_setup_rctl(adapter);
                e1000_set_rx_mode(netdev);
 
+               rctl = er32(RCTL);
+
                /* turn on all-multi mode if wake on multicast is enabled */
-               if (wufc & E1000_WUFC_MC) {
-                       rctl = er32(RCTL);
+               if (wufc & E1000_WUFC_MC)
                        rctl |= E1000_RCTL_MPE;
-                       ew32(RCTL, rctl);
-               }
+
+               /* enable receives in the hardware */
+               ew32(RCTL, rctl | E1000_RCTL_EN);
 
                if (hw->mac_type >= e1000_82540) {
                        ctrl = er32(CTRL);