diff options
Diffstat (limited to 'drivers/staging/comedi/comedi_fops.c')
| -rw-r--r-- | drivers/staging/comedi/comedi_fops.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/staging/comedi/comedi_fops.c b/drivers/staging/comedi/comedi_fops.c index 8647518259f6..6cdef9d5f8d0 100644 --- a/drivers/staging/comedi/comedi_fops.c +++ b/drivers/staging/comedi/comedi_fops.c @@ -1705,6 +1705,7 @@ static int do_cancel_ioctl(struct comedi_device *dev, unsigned int arg, void *file) { struct comedi_subdevice *s; + int ret; if (arg >= dev->n_subdevices) return -EINVAL; @@ -1721,7 +1722,11 @@ static int do_cancel_ioctl(struct comedi_device *dev, unsigned int arg, if (s->busy != file) return -EBUSY; - return do_cancel(dev, s); + ret = do_cancel(dev, s); + if (comedi_get_subdevice_runflags(s) & SRF_USER) + wake_up_interruptible(&s->async->wait_head); + + return ret; } /* |