From 4e719183667e1363b0d81add5212aee2f149d727 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Thu, 22 Sep 2016 15:58:29 -0500 Subject: [PATCH] usb: musb: Fix PM runtime for disconnect after unconfigure If we unconfigure musb as a USB peripheral with cable connected, and then remove the cable, no interrupts will happen. And musb thinks we're still connected keeping the device active. Now with the session bit based PM runtime working for musb, we can fix this issue by calling musb irq_work. That rechecks the devctl register and reconfigures PM runtime based on the devctl. Fixes: 467d5c980709 ("usb: musb: Implement session bit based runtime PM for musb-core") Signed-off-by: Tony Lindgren Signed-off-by: Bin Liu Signed-off-by: Greg Kroah-Hartman --- drivers/usb/musb/musb_gadget.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c index 6d1e975e9605..bff4869a57cd 100644 --- a/drivers/usb/musb/musb_gadget.c +++ b/drivers/usb/musb/musb_gadget.c @@ -1964,6 +1964,9 @@ static int musb_gadget_stop(struct usb_gadget *g) * that currently misbehaves. */ + /* Force check of devctl register for PM runtime */ + schedule_work(&musb->irq_work); + pm_runtime_mark_last_busy(musb->controller); pm_runtime_put_autosuspend(musb->controller);