openwrt/target/linux/brcm47xx/patches-4.9/791-tg3-no-pci-sleep.patch
Hauke Mehrtens 1f991bb365 brcm47xx: Add support for kernel 4.9
I tested this on a WRT54GS and a WRT610N V1.
The WRT610N does not boot when the kernel is too big, so I deactivated KALLSYMS

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
2017-07-02 23:10:06 +02:00

18 lines
712 B
Diff

When the Ethernet controller is powered down and someone wants to
access the mdio bus like the witch driver (b53) the system crashed if
PCI_D3hot was set before. This patch deactivates this power sawing mode
when a switch driver is in use.
--- a/drivers/net/ethernet/broadcom/tg3.c
+++ b/drivers/net/ethernet/broadcom/tg3.c
@@ -4261,7 +4261,8 @@ static int tg3_power_down_prepare(struct
static void tg3_power_down(struct tg3 *tp)
{
pci_wake_from_d3(tp->pdev, tg3_flag(tp, WOL_ENABLE));
- pci_set_power_state(tp->pdev, PCI_D3hot);
+ if (!tg3_flag(tp, ROBOSWITCH))
+ pci_set_power_state(tp->pdev, PCI_D3hot);
}
static void tg3_aux_stat_to_speed_duplex(struct tg3 *tp, u32 val, u16 *speed, u8 *duplex)