This is a note to let you know that I've just added the patch titled
r8169: disable ASPM
to the 2.6.32-longterm tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/longterm/longterm-queue-2.6.32.git;a=summary
The filename of the patch is:
r8169-disable-aspm.patch
and it can be found in the queue-2.6.32 subdirectory.
If you, or anyone else, feels it should not be added to the 2.6.32 longterm
tree,
please let <[email protected]> know about it.
>From ba04c7c93bbcb48ce880cf75b6e9dffcd79d4c7b Mon Sep 17 00:00:00 2001
From: Stanislaw Gruszka <[email protected]>
Date: Tue, 22 Feb 2011 02:00:11 +0000
Subject: r8169: disable ASPM
From: Stanislaw Gruszka <[email protected]>
commit ba04c7c93bbcb48ce880cf75b6e9dffcd79d4c7b upstream.
For some time is known that ASPM is causing troubles on r8169, i.e. make
device randomly stop working without any errors in dmesg.
Currently Tomi Leppikangas reports that system with r8169 device hangs
with MCE errors when ASPM is enabled:
https://bugzilla.redhat.com/show_bug.cgi?id=642861#c4
Lets disable ASPM for r8169 devices at all, to avoid problems with
r8169 PCIe devices at least for some users.
Reported-by: Tomi Leppikangas <[email protected]>
Signed-off-by: Stanislaw Gruszka <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/net/r8169.c | 6 ++++++
1 file changed, 6 insertions(+)
--- a/drivers/net/r8169.c
+++ b/drivers/net/r8169.c
@@ -23,6 +23,7 @@
#include <linux/tcp.h>
#include <linux/init.h>
#include <linux/dma-mapping.h>
+#include <linux/pci-aspm.h>
#include <asm/system.h>
#include <asm/io.h>
@@ -3030,6 +3031,11 @@ rtl8169_init_one(struct pci_dev *pdev, c
mii->reg_num_mask = 0x1f;
mii->supports_gmii = !!(cfg->features & RTL_FEATURE_GMII);
+ /* disable ASPM completely as that cause random device stop working
+ * problems as well as full system hangs for some PCIe devices users */
+ pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1 |
+ PCIE_LINK_STATE_CLKPM);
+
/* enable device (incl. PCI PM wakeup and hotplug setup) */
rc = pci_enable_device(pdev);
if (rc < 0) {
Patches currently in longterm-queue-2.6.32 which might be from
[email protected] are
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