On Wed, 4 Jul 2012, Lan Tianyu wrote: > Change since v5: Add usb_autopm_get/put_interface() around the port > power operations in the control attribute's callback to deal with > situation that control attribute is changed when the usb hub is suspended. > > Change since v4: Add clear PORT_POWER if power policy is "off" in the > hub_power_on(). Return -EIO if set/clear PORT_POWER fails in the store_port_power_control() > > This patch is to add two attributes for each usb hub ports to control port's power. > Control port's power through setting or clearing PORT_POWER feature. > > control has two options. "auto", "on" and "off" > "on" - port power must be on. > "off" - port power must be off. > > state reports usb port's power state > "on" - power on > "off" - power off > "error" - can't get power state > > Signed-off-by: Lan Tianyu <tianyu.lan@xxxxxxxxx> Acked-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
