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>
---
Changes in v2:
- add definition for hcd structure
- remove check for bus->root_hub
drivers/usb/dwc2/hcd_intr.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/usb/dwc2/hcd_intr.c b/drivers/usb/dwc2/hcd_intr.c
index 551ba87..680206f 100644
--- a/drivers/usb/dwc2/hcd_intr.c
+++ b/drivers/usb/dwc2/hcd_intr.c
@@ -329,6 +329,7 @@ static void dwc2_port_intr(struct dwc2_hsotg *hsotg)
{
u32 hprt0;
u32 hprt0_modify;
+ struct usb_hcd *hcd = (struct usb_hcd *)hsotg->priv;
dev_vdbg(hsotg->dev, "--Port Interrupt--\n");
@@ -354,6 +355,10 @@ static void dwc2_port_intr(struct dwc2_hsotg *hsotg)
hsotg->flags.b.port_connect_status = 1;
hprt0_modify |= HPRT0_CONNDET;
+ /* resume root hub? */
+ if (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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