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...@rock-chips.com>
Signed-off-by: Kever Yang <kever.y...@rock-chips.com>
---
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
--
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