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| author | Kirill Kapranov <kirill.kirillovich.kapranov@gmail.com> | 2018-02-17 23:01:40 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-03-09 09:37:10 -0800 |
| commit | 687ca6395f10ac8a54fd5285dda91ed9efac9e23 (patch) | |
| tree | b134186b4cf748278c1d21a11c6e7255ccc63c54 /drivers/usb/misc | |
| parent | 092bd5c2b939e63e0e02249f7695ca828fa05049 (diff) | |
| download | talos-obmc-linux-687ca6395f10ac8a54fd5285dda91ed9efac9e23.tar.gz talos-obmc-linux-687ca6395f10ac8a54fd5285dda91ed9efac9e23.zip | |
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 <kirill.kirillovich.kapranov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/misc')
| -rw-r--r-- | drivers/usb/misc/adutux.c | 2 |
1 files changed, 2 insertions, 0 deletions
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); |
