diff options
| -rw-r--r-- | drivers/staging/comedi/comedi_fops.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/staging/comedi/comedi_fops.c b/drivers/staging/comedi/comedi_fops.c index 04d6040246ee..e625ef2bcb7f 100644 --- a/drivers/staging/comedi/comedi_fops.c +++ b/drivers/staging/comedi/comedi_fops.c @@ -1111,6 +1111,7 @@ static int do_bufinfo_ioctl(struct comedi_device *dev, struct comedi_bufinfo bi; struct comedi_subdevice *s; struct comedi_async *async; + bool become_nonbusy = false; if (copy_from_user(&bi, arg, sizeof(bi))) return -EFAULT; @@ -1149,7 +1150,7 @@ static int do_bufinfo_ioctl(struct comedi_device *dev, if (comedi_is_subdevice_idle(s) && comedi_buf_read_n_available(s) == 0) - do_become_nonbusy(dev, s); + become_nonbusy = true; } bi.bytes_written = 0; } else { @@ -1168,6 +1169,9 @@ copyback_position: bi.buf_read_count = async->buf_read_count; bi.buf_read_ptr = async->buf_read_ptr; + if (become_nonbusy) + do_become_nonbusy(dev, s); + copyback: if (copy_to_user(arg, &bi, sizeof(bi))) return -EFAULT; |