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Code Issues

brcm47xx: fix bcm4705 rebooting when initializing the switch.

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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)