diff options
| author |   Mathias Nyman <mathias.nyman@linux.intel.com> | 2022-10-24 17:27:18 +0300 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-10-25 19:53:41 +0200 |
| commit | 34cd2db408d591bc15771cbcc90939ade0a99a21 (patch) | |
| tree | 69e081cf98580ae6c1e0b0c08fc3ece4744e9185 /drivers/usb/host/xhci-pci.c | |
| parent | usb: xhci: add XHCI_SPURIOUS_SUCCESS to ASM1042 despite being a V0.96 controller (diff) | |
| download | linux-dev-34cd2db408d591bc15771cbcc90939ade0a99a21.tar.xz linux-dev-34cd2db408d591bc15771cbcc90939ade0a99a21.zip | |
xhci: Add quirk to reset host back to default state at shutdown
Systems based on Alder Lake P see significant boot time delay if
boot firmware tries to control usb ports in unexpected link states.
This is seen with self-powered usb devices that survive in U3 link
suspended state over S5.
A more generic solution to power off ports at shutdown was attempted in
commit 83810f84ecf1 ("xhci: turn off port power in shutdown")
but it caused regression.
Add host specific XHCI_RESET_TO_DEFAULT quirk which will reset host and
ports back to default state in shutdown.
Cc: stable@vger.kernel.org
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20221024142720.4122053-3-mathias.nyman@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host/xhci-pci.c')
| -rw-r--r-- | drivers/usb/host/xhci-pci.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 6dd3102749b7..fbbd547ba12a 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -258,6 +258,10 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci) xhci->quirks |= XHCI_MISSING_CAS; if (pdev->vendor == PCI_VENDOR_ID_INTEL && + pdev->device == PCI_DEVICE_ID_INTEL_ALDER_LAKE_PCH_XHCI) + xhci->quirks |= XHCI_RESET_TO_DEFAULT; + + if (pdev->vendor == PCI_VENDOR_ID_INTEL && (pdev->device == PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_2C_XHCI || pdev->device == PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_4C_XHCI || pdev->device == PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_LP_XHCI || |