From: Ian Abbott Date: Wed, 19 May 2010 17:09:49 +0000 (+0100) Subject: Staging: comedi: COMEDI_BUFINFO with no async - report no bytes read or written X-Git-Tag: v2.6.35-rc2~14^2~19 X-Git-Url: http://bbs.cooldavid.org/git/?a=commitdiff_plain;ds=sidebyside;h=4772c018e35b6a21e8a8bde54568b59998540a16;p=net-next-2.6.git 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 Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/comedi/comedi_fops.c b/drivers/staging/comedi/comedi_fops.c index 39ed22b8022..75256251250 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; }