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authorLinus Torvalds <torvalds@linux-foundation.org>2020-07-30 12:01:42 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-07-30 12:01:42 -0700
commitd9644712a243ac47af4fe9cf65472d85c57753c7 (patch)
treec8de085e46fa5a1ac8f2f25f567e9f0d7e59704c /drivers
parente2c46b5762c616c249201688d3b9846627f78d2c (diff)
parentb361663c5a40c8bc758b7f7f2239f7a192180e7c (diff)
Merge tag 'pci-v5.8-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI fix from Bjorn Helgaas: "Disable ASPM on ASM1083/1085 PCIe-to-PCI bridge (Robert Hancock)" * tag 'pci-v5.8-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: PCI/ASPM: Disable ASPM on ASMedia ASM1083/1085 PCIe-to-PCI bridge
Diffstat (limited to 'drivers')
-rw-r--r--drivers/pci/quirks.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 812bfc32ecb8..2ea61abd5830 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -2330,6 +2330,19 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f1, quirk_disable_aspm_l0s);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f4, quirk_disable_aspm_l0s);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1508, quirk_disable_aspm_l0s);
+static void quirk_disable_aspm_l0s_l1(struct pci_dev *dev)
+{
+ pci_info(dev, "Disabling ASPM L0s/L1\n");
+ pci_disable_link_state(dev, PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1);
+}
+
+/*
+ * ASM1083/1085 PCIe-PCI bridge devices cause AER timeout errors on the
+ * upstream PCIe root port when ASPM is enabled. At least L0s mode is affected;
+ * disable both L0s and L1 for now to be safe.
+ */
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ASMEDIA, 0x1080, quirk_disable_aspm_l0s_l1);
+
/*
* Some Pericom PCIe-to-PCI bridges in reverse mode need the PCIe Retrain
* Link bit cleared after starting the link retrain process to allow this