Hello.
On 21-08-2012 8:06, [email protected] wrote:
From: Manoj Iyer <[email protected]>
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 <[email protected]>
---
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
Devices, not ports?
+ * unconditionally switch the ports to xHCI like we do when resume
s/resume/resuming/
+ * from suspend.
+ */
+ if (usb_is_intel_switchable_xhci(pdev))
+ usb_enable_xhci_ports(pdev);
+
WBR, Sergei
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