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Date: Mon, 20 Aug 2012 23:06:55 -0500 From: manoj.iyer@...onical.com To: linux-kernel@...r.kernel.org Cc: sarah.a.sharp@...ux.intel.com, gregkh@...uxfoundation.org, linux-usb@...r.kernel.org, manoj.iyer@...onical.com Subject: [PATCH 1/1] xhci: Unconditionally switch ports to xHCI on powerup From: Manoj Iyer <manoj.iyer@...onical.com> USB 3.0 devices show up as high-speed devices on powerup, after an s3 cycle they are correctly recognized as SuperSpeed. At powerup unconditionally switch the port to xHCI like we do when we resume from suspend. BugLink: http://bugs.launchpad.net/bugs/1000424 Signed-off-by: Manoj Iyer <manoj.iyer@...onical.com> --- drivers/usb/host/xhci-pci.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 9bfd4ca11..5c8dbea 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -48,6 +48,14 @@ static int xhci_pci_reinit(struct xhci_hcd *xhci, struct pci_dev *pdev) if (!pci_set_mwi(pdev)) xhci_dbg(xhci, "MWI active\n"); + /* + * USB SuperSpeed ports are recognized as HighSpeed ports on powerup + * unconditionally switch the ports to xHCI like we do when resume + * from suspend. + */ + if (usb_is_intel_switchable_xhci(pdev)) + usb_enable_xhci_ports(pdev); + xhci_dbg(xhci, "Finished xhci_pci_reinit\n"); return 0; } -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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