Hi,
On Mon, Jun 03, 2024, Mike Looijmans wrote:
When disconnecting the USB cable on an LS1028 device, nothing happensOn disconnection, did you see disconnect interrupt? If so, it should
in userspace, which keeps thinking everything is still up and running.
Turns out that the DWC3 controller only sends DWC3_DEVICE_EVENT_SUSPEND
in that case, and not a DWC3_DEVICE_EVENT_DISCONNECT as one would
expect. As a result, sysfs attribute "state" remains "configured"
until something resets it.
Forward the "suspended" state to sysfs, so that the "state" at least
changes into "suspended" when one removes the cable, and hence also
matches the gadget's state when really suspended.
transition to USB_STATE_NOATTACHED. This change doesn't seem to directly
address your issue. Can you provide the driver tracepoints?
Thanks,
Thinh
Signed-off-by: Mike Looijmans <mike.looijmans@xxxxxxxx>
---
drivers/usb/dwc3/gadget.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 4df2661f6675..99e8ea9db600 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -4343,6 +4343,7 @@ static void dwc3_gadget_suspend_interrupt(struct dwc3 *dwc,
if (!dwc->suspended && next == DWC3_LINK_STATE_U3) {
dwc->suspended = true;
dwc3_suspend_gadget(dwc);
+ usb_gadget_set_state(dwc->gadget, USB_STATE_SUSPENDED);
}
dwc->link_state = next;
--
2.34.1
Met vriendelijke groet / kind regards,
Mike Looijmans