add pci latency timer workaround for atheros cards (from #1546)

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@6867 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/target/linux/brcm47xx-2.6/files/drivers/ssb/driver_pci/pcicore.c b/target/linux/brcm47xx-2.6/files/drivers/ssb/driver_pci/pcicore.c
index d9aa22b..e18e486 100644 (file)
--- a/target/linux/brcm47xx-2.6/files/drivers/ssb/driver_pci/pcicore.c
+++ b/target/linux/brcm47xx-2.6/files/drivers/ssb/driver_pci/pcicore.c
@@ -92,6 +92,9 @@ static void __init ssb_fixup_pcibridge(struct pci_dev *dev)
 
        /* Enable PCI bridge BAR1 prefetch and burst */
        pci_write_config_dword(dev, SSB_BAR1_CONTROL, 3);
+
+       /* Make sure our latency is high enough to handle the devices behind us */
+       pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0xa8);
 }
 DECLARE_PCI_FIXUP_EARLY(PCI_ANY_ID, PCI_ANY_ID, ssb_fixup_pcibridge);