For COMEDI_BUFINFO ioctl, if subdevice has no async capability, set

bytes_read and bytes_written to 0 in returned structure.

diff --git a/comedi/comedi_fops.c b/comedi/comedi_fops.c
index a638667547d5ac86cac0bed37765b77716536c35..0e9bf33b9cc1610fd6df030f0cc2fdd874c98aad 100644 (file)
--- a/comedi/comedi_fops.c
+++ b/comedi/comedi_fops.c
@@ -594,6 +594,8 @@ static int do_bufinfo_ioctl(comedi_device * dev, void *arg)
                bi.buf_read_ptr = 0;
                bi.buf_write_count = 0;
                bi.buf_read_count = 0;
+               bi.bytes_read = 0;
+               bi.bytes_written = 0;
                goto copyback;
        }