tjh.dev / kernel
Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
1
fork

Configure Feed

Select the types of activity you want to include in your feed.

PCI/ASPM: Avoid L0s and L1 on PA Semi [1959:a002] Root Ports

Christian reported that f3ac2ff14834 ("PCI/ASPM: Enable all ClockPM and
ASPM states for devicetree platforms") broke booting on the A-EON AmigaOne
X1000.

Override the L0s and L1 Support advertised in Link Capabilities by the
X1000 Root Ports ([1959:a002]) so we don't try to enable those states.

Fixes: f3ac2ff14834 ("PCI/ASPM: Enable all ClockPM and ASPM states for devicetree platforms")
Fixes: df5192d9bb0e ("PCI/ASPM: Enable only L0s and L1 for devicetree platforms")
Reported-by: Christian Zigotzky <chzigotzky@xenosoft.de>
Link: https://lore.kernel.org/r/a41d2ca1-fcd9-c416-b111-a958e92e94bf@xenosoft.de
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

Bjorn Helgaas 823576c8 5b40a508

+1
+1
drivers/pci/quirks.c
··· 2524 2524 */ 2525 2525 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ASMEDIA, 0x1080, quirk_disable_aspm_l0s_l1); 2526 2526 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_FREESCALE, 0x0451, quirk_disable_aspm_l0s_l1); 2527 + DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_PASEMI, 0xa002, quirk_disable_aspm_l0s_l1); 2527 2528 2528 2529 /* 2529 2530 * Some Pericom PCIe-to-PCI bridges in reverse mode need the PCIe Retrain