#1017: "rx FIFO overrun" prevents traffic from flowing
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Reporter: [EMAIL PROTECTED] | Owner:
Type: defect | Status: new
Priority: critical | Milestone:
Component: madwifi: driver | Version: trunk
Resolution: | Keywords:
Patch_attached: 0 |
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Comment (by [EMAIL PROTECTED]):
I tried applying the following patch to the current kernel (2.6.24-rc3):
{{{
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 463a5a9..b41440a 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -516,6 +516,9 @@ int pci_scan_bridge(struct pci_bus *bus, struct
pci_dev * dev, int max, int pass
pci_write_config_word(dev, PCI_BRIDGE_CONTROL,
bctl & ~PCI_BRIDGE_CTL_MASTER_ABORT);
+ /* But below we'll turn on MasterAbortMode -- added here for
debugging a PCI problem */
+ bctl |= PCI_BRIDGE_CTL_MASTER_ABORT;
+
pci_enable_crs(dev);
if ((buses & 0xffff00) && !pcibios_assign_all_busses() &&
!is_cardbus) {
}}}
I more-or-less copied this out of the patch linked above. Unfortunately
it doesn't make any difference in the symptoms or the dmesg output as far
as I can see.
With this patch applied, the output of "lspci -vv" differs before and
after the NMI occurs, in three places: the host bridge changes from SERR-
to SERR+, and both the PCI Express Port 2 and the Atheros device change
from MAbort- to MAbort+.
--
Ticket URL: <http://madwifi.org/ticket/1017#comment:105>
madwifi.org <http://madwifi.org/>
Multiband Atheros Driver for Wireless Fidelity
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