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| author | Kai-Heng Feng <kai.heng.feng@canonical.com> | 2019-12-20 03:20:06 +0800 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2020-03-19 16:47:47 -0500 |
| commit | 2880325bda8d53566dcb9725abc929eec871608e (patch) | |
| tree | 2a514e9d56de539abb9731be462743fe5d4344ce /drivers/pci/hotplug/ibmphp_hpc.c | |
| parent | e3cdcfcea363edadebf94576c29d33a441fd5a6f (diff) | |
| download | linux-2880325bda8d53566dcb9725abc929eec871608e.tar.gz linux-2880325bda8d53566dcb9725abc929eec871608e.tar.bz2 linux-2880325bda8d53566dcb9725abc929eec871608e.zip | |
PCI: Avoid ASMedia XHCI USB PME# from D0 defect
The ASMedia USB XHCI Controller claims to support generating PME# while
in D0:
01:00.0 USB controller: ASMedia Technology Inc. Device 2142 (prog-if 30 [XHCI])
Subsystem: SUNIX Co., Ltd. Device 312b
Capabilities: [78] Power Management version 3
Flags: PMEClk- DSI- D1- D2- AuxCurrent=55mA PME(D0+,D1-,D2-,D3hot-,D3cold-)
Status: D0 NoSoftRst+ PME-Enable+ DSel=0 DScale=0 PME-
However PME# only gets asserted when plugging USB 2.0 or USB 1.1 devices,
but not for USB 3.0 devices.
Remove PCI_PM_CAP_PME_D0 to avoid using PME under D0.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=205919
Link: https://lore.kernel.org/r/20191219192006.16270-1-kai.heng.feng@canonical.com
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci/hotplug/ibmphp_hpc.c')
0 files changed, 0 insertions, 0 deletions