target/linux/brcm47xx/patches-3.18/791-tg3-no-pci-sleep.patch

   1 When the Ethernet controller is powered down and someone wants to
   2 access the mdio bus like the witch driver (b53) the system crashed if
   3 PCI_D3hot was set before. This patch deactivates this power sawing mode
   4 when a switch driver is in use.
   5
   6 --- a/drivers/net/ethernet/broadcom/tg3.c
   7 +++ b/drivers/net/ethernet/broadcom/tg3.c
   8 @@ -4263,7 +4263,8 @@ static int tg3_power_down_prepare(struct
   9  static void tg3_power_down(struct tg3 *tp)
  10  {
  11         pci_wake_from_d3(tp->pdev, tg3_flag(tp, WOL_ENABLE));
  12 -       pci_set_power_state(tp->pdev, PCI_D3hot);
  13 +       if (!tg3_flag(tp, ROBOSWITCH))
  14 +               pci_set_power_state(tp->pdev, PCI_D3hot);
  15  }
  16
  17  static void tg3_aux_stat_to_speed_duplex(struct tg3 *tp, u32 val, u16 *speed, u8 *duplex)