| commit | 41add2e84bff0c887949698e01dab28105f11a6b | [log] [tgz] |
|---|---|---|
| author | Ian Abbott <abbotti@mev.co.uk> | Mon Jan 09 15:47:30 2012 +0000 |
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | Thu Feb 09 10:00:36 2012 -0800 |
| tree | f5488d770c5178b6f502614b82bac19fb0025765 | |
| parent | 9e77e6b62e699fe23a4648ac438115c5fc952e42 [diff] |
staging: comedi: ni_pcidio: Mark buffer for writing when setting up DMA. When setting up the DMA for 'read' streaming acquisition on the DIO subdevice, mark the whole buffer as writable before starting the DMA. This prevents a spurious detection of a DMA overwrite of good data during the first interrupt. Problem reported by Nicholas Nell. Fix suggested by Frank Mori Hess. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>