diff options
Diffstat (limited to 'drivers/staging/comedi/comedi_fops.c')
| -rw-r--r-- | drivers/staging/comedi/comedi_fops.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/staging/comedi/comedi_fops.c b/drivers/staging/comedi/comedi_fops.c index c54ed42f8310..d4904cc50f77 100644 --- a/drivers/staging/comedi/comedi_fops.c +++ b/drivers/staging/comedi/comedi_fops.c @@ -997,7 +997,7 @@ static int do_bufinfo_ioctl(struct comedi_device *dev, comedi_buf_read_free(s, bi.bytes_read); if (comedi_is_subdevice_idle(s) && - async->buf_write_count == async->buf_read_count) { + comedi_buf_n_bytes_ready(s) == 0) { do_become_nonbusy(dev, s); } } @@ -2303,8 +2303,7 @@ static ssize_t comedi_read(struct file *file, char __user *buf, size_t nbytes, new_s = comedi_read_subdevice(dev, minor); if (dev->attached && old_detach_count == dev->detach_count && s == new_s && new_s->async == async) { - if (become_nonbusy || - async->buf_read_count - async->buf_write_count == 0) + if (become_nonbusy || comedi_buf_n_bytes_ready(s) == 0) do_become_nonbusy(dev, s); } mutex_unlock(&dev->mutex); |