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authorStanislaw Gruszka <sgruszka@redhat.com>2011-02-22 02:00:11 +0000
committerDavid S. Miller <davem@davemloft.net>2011-03-03 11:55:43 -0800
commitba04c7c93bbcb48ce880cf75b6e9dffcd79d4c7b (patch)
tree32accc8c42e605628367efb5bfbf4fbf2fce4f80 /drivers
parentf009918a1c1bbf8607b8aab3959876913a30193a (diff)
r8169: disable ASPM
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 <tomi.leppikangas@gmail.com> Cc: stable@kernel.org Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/r8169.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/net/r8169.c b/drivers/net/r8169.c
index ef2133b16f8..7ffdb80adf4 100644
--- a/drivers/net/r8169.c
+++ b/drivers/net/r8169.c
@@ -25,6 +25,7 @@
#include <linux/dma-mapping.h>
#include <linux/pm_runtime.h>
#include <linux/firmware.h>
+#include <linux/pci-aspm.h>
#include <asm/system.h>
#include <asm/io.h>
@@ -3020,6 +3021,11 @@ rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
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) {