From 687ca6395f10ac8a54fd5285dda91ed9efac9e23 Mon Sep 17 00:00:00 2001 From: Kirill Kapranov Date: Sat, 17 Feb 2018 23:01:40 +0200 Subject: [PATCH] USB: adutux: Add waiting in transfer abortion Add waiting for an URB transmit finish that let the last URB to be sent (to be not discarded) during 'release' procedure. W/o this waiting,the last frame will be nearly always lost. A test case: an attempt of sending a single frame: echo -en "\001mk255" >/dev/adutux0 Signed-off-by: Kirill Kapranov Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/adutux.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/usb/misc/adutux.c b/drivers/usb/misc/adutux.c index f7a2fe42396f..b3160afe0458 100644 --- a/drivers/usb/misc/adutux.c +++ b/drivers/usb/misc/adutux.c @@ -132,6 +132,8 @@ static void adu_abort_transfers(struct adu_device *dev) spin_lock_irqsave(&dev->buflock, flags); if (!dev->out_urb_finished) { spin_unlock_irqrestore(&dev->buflock, flags); + wait_event_timeout(dev->write_wait, dev->out_urb_finished, + COMMAND_TIMEOUT); usb_kill_urb(dev->interrupt_out_urb); } else spin_unlock_irqrestore(&dev->buflock, flags); -- 2.45.2