Messages in this thread Patch in this message | | | Date | Mon, 16 Jul 2012 19:46:06 +0300 | From | Denis Turischev <> | Subject | [PATCH] xhci: EHCI/xHCI ports switching on Intense-PC. |
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Intense-PC is Compulab's mini-desktop with Intel Panther Point chipset.
Unconditional ports switching provided by function usb_enable_xhci_ports() leads to surprising results, after shutdown system powered-on again after a few seconds. On Windows power related problems were not observed.
The patch avoids ports switching for Intense-PC.
Signed-off-by: Denis Turischev <denis@compulab.co.il> --- drivers/usb/host/pci-quirks.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c index df0828c..6f72593 100644 --- a/drivers/usb/host/pci-quirks.c +++ b/drivers/usb/host/pci-quirks.c @@ -759,6 +759,13 @@ void usb_enable_xhci_ports(struct pci_dev *xhci_pdev) { u32 ports_available;
+ const char *brd_name; + brd_name = dmi_get_system_info(DMI_BOARD_NAME); + + /* quirk for Compulab's Intense-PC board */ + if (brd_name && strstr(brd_name, "Intense-PC")) + return; + /* Don't switchover the ports if the user hasn't compiled the xHCI * driver. Otherwise they will see "dead" USB ports that don't power * the devices. -- 1.7.9.5
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