bcm47xx: add testing support for kernel 6.1

[openwrt/openwrt.git] / target / linux / bcm47xx / patches-6.1 / 791-tg3-no-pci-sleep.patch

diff --git a/target/linux/bcm47xx/patches-6.1/791-tg3-no-pci-sleep.patch b/target/linux/bcm47xx/patches-6.1/791-tg3-no-pci-sleep.patch
new file mode 100644 (file)
index 0000000..76e979a
--- /dev/null
+++ b/target/linux/bcm47xx/patches-6.1/791-tg3-no-pci-sleep.patch
@@ -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, u32 *speed, u8 *duplex)