Michael, Hope you are ok I have changed your patches. Hi Alan, At the first patch, it defines one hcd driver's API .port_power, which is used to power on/off dedicated port, the implementation of this API is the same which it used to replace, and the platform can override it if necessary. At the second patch, the chipidea host override .port_power to control regulator during the port power control. Michael Grzeschik (2): usb: ehci: add port_power callback and override usb: chipidea: host: add portpower override drivers/usb/chipidea/host.c | 69 ++++++++++++++++++++++++++++++------------- drivers/usb/host/ehci-hcd.c | 10 ++++++- drivers/usb/host/ehci-hub.c | 41 ++++++++++++++++++------- drivers/usb/host/ehci.h | 3 ++ include/linux/usb/hcd.h | 3 ++ 5 files changed, 94 insertions(+), 32 deletions(-) -- 1.7.9.5 -- 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