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brcm47xx: fix bcm4705 rebooting when initializing the switch. 

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.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

SVN-Revision: 41527
This commit is contained in:
Hauke Mehrtens 2014-07-06 13:45:43 +00:00
parent ed0dc1c97e
commit df8741f92b
2 changed files with 34 additions and 0 deletions
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17
target/linux/brcm47xx/patches-3.10/791-tg3-no-pci-sleep.patch Normal file
View File

@ -0,0 +1,17 @@
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
@@ -4221,7 +4221,8 @@ static void tg3_power_down(struct tg3 *t
tg3_power_down_prepare(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)

17
target/linux/brcm47xx/patches-3.14/791-tg3-no-pci-sleep.patch Normal file
View File

@ -0,0 +1,17 @@
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
@@ -4269,7 +4269,8 @@ 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)