After we implement the bus_suspend/resume, auto suspend id enabled. The root hub will be auto suspend if there is no device connected, we need to resume the root hub when a device connect detect. This patch tested on rk3288. Signed-off-by: Roy Li <roy.li@xxxxxxxxxxxxxx> Signed-off-by: Kever Yang <kever.yang@xxxxxxxxxxxxxx> --- drivers/usb/dwc2/hcd_intr.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/usb/dwc2/hcd_intr.c b/drivers/usb/dwc2/hcd_intr.c index 551ba87..c8299fd 100644 --- a/drivers/usb/dwc2/hcd_intr.c +++ b/drivers/usb/dwc2/hcd_intr.c @@ -355,6 +355,13 @@ static void dwc2_port_intr(struct dwc2_hsotg *hsotg) hprt0_modify |= HPRT0_CONNDET; /* + * Check if root hub is in suspend state + * if root hub in suspend, resume it. + */ + if ((bus->root_hub) && (hcd->state == HC_STATE_SUSPENDED)) + usb_hcd_resume_root_hub(hcd); + + /* * The Hub driver asserts a reset when it sees port connect * status change flag */ -- 1.9.1 -- 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
