4.17-stable review patch. If anyone has any objections, please let me know.
------------------ From: Minas Harutyunyan <[email protected]> [ Upstream commit 1ffba9058737af2ddeebc813faa8ea9b16bc892a ] In case of requests queue is empty reset EP target_frame to initial value. This allow restarting ISOC traffic in case when function driver queued requests with interruptions. Tested-by: Zeng Tao <[email protected]> Signed-off-by: Minas Harutyunyan <[email protected]> Signed-off-by: Felipe Balbi <[email protected]> Signed-off-by: Sasha Levin <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/usb/dwc2/gadget.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -892,6 +892,7 @@ static void dwc2_gadget_start_isoc_ddma( u32 ctrl; if (list_empty(&hs_ep->queue)) { + hs_ep->target_frame = TARGET_FRAME_INITIAL; dev_dbg(hsotg->dev, "%s: No requests in queue\n", __func__); return; }
