On 05/25/2012 01:48 PM, Lan Tianyu wrote: > This patch is to add process of clearing PORT_POWER feature request > for xhci hub. > > Signed-off-by: Lan Tianyu <tianyu.lan@xxxxxxxxx> > --- > drivers/usb/host/xhci-hub.c | 5 +++++ > 1 files changed, 5 insertions(+), 0 deletions(-) > > diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c > index 2732ef6..feb515e 100644 > --- a/drivers/usb/host/xhci-hub.c > +++ b/drivers/usb/host/xhci-hub.c > @@ -827,6 +827,11 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, > xhci_disable_port(hcd, xhci, wIndex, > port_array[wIndex], temp); > break; > + case USB_PORT_FEAT_POWER: > + temp = xhci_readl(xhci, port_array[wIndex]) > + & ~PORT_POWER; You should not read the register again. Simply use temp &= ~PORT_POWER is enough. Otherwise you must call xhci_port_state_to_neutral(temp) again before write it back to register. Thanks, Andiry > + xhci_writel(xhci, temp, port_array[wIndex]); > + break; > default: > goto error; > } -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
