diff options
| author |   Ian Abbott <abbotti@mev.co.uk> | 2010-05-19 18:09:49 +0100 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@suse.de> | 2010-06-04 13:38:53 -0700 |
| commit | 4772c018e35b6a21e8a8bde54568b59998540a16 (patch) | |
| tree | 15aa77b0981f17e100f8303a4754ad2b5752eeee /drivers/staging | |
| parent | Staging: comedi: don't write to buffer if command finished (diff) | |
| download | linux-dev-4772c018e35b6a21e8a8bde54568b59998540a16.tar.xz linux-dev-4772c018e35b6a21e8a8bde54568b59998540a16.zip | |
Staging: comedi: COMEDI_BUFINFO with no async - report no bytes read or written
When the COMEDI_BUFINFO ioctl is used on a subdevice without
asynchronous streaming command support, set 'bytes_read = 0' and
'bytes_written = 0' in the buffer info returned back to the user.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/staging')
| -rw-r--r-- | drivers/staging/comedi/comedi_fops.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/staging/comedi/comedi_fops.c b/drivers/staging/comedi/comedi_fops.c index 39ed22b80229..75256251250d 100644 --- a/drivers/staging/comedi/comedi_fops.c +++ b/drivers/staging/comedi/comedi_fops.c @@ -584,6 +584,8 @@ static int do_bufinfo_ioctl(struct comedi_device *dev, 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; } |