diff options
| author | H Hartley Sweeten <hsweeten@visionengravers.com> | 2015-01-20 12:06:01 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-01-25 19:59:09 +0800 |
| commit | a3b2ee1d3ef56d0221fc5b246368dc13cf6b8ba4 (patch) | |
| tree | 37b7444e6f05715d5c06fd88bb159fb93fbb29a2 /drivers/staging/comedi/drivers/das16.c | |
| parent | 84bb0bccd26ec3029124a9dd200b985c1cde77bd (diff) | |
staging: comedi: das16: use COMEDI_CB_CANCEL_MASK to see if command is running
In das16_interrupt(), use COMEDI_CB_CANCEL_MASK to determine if the async
command is still running and the dma needs to be re-enabled. This will
cause the driver not re-enable the dma if the async buffer overflows
(COMEDI_CB_OVERFLOW), a hardware error occurs (COMEDI_CB_ERROR), or the
command completes (COMEDI_CB_EOA).
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/comedi/drivers/das16.c')
| -rw-r--r-- | drivers/staging/comedi/drivers/das16.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/staging/comedi/drivers/das16.c b/drivers/staging/comedi/drivers/das16.c index 466d4ef45f3a..4608b0106b67 100644 --- a/drivers/staging/comedi/drivers/das16.c +++ b/drivers/staging/comedi/drivers/das16.c @@ -523,7 +523,7 @@ static void das16_interrupt(struct comedi_device *dev) devpriv->adc_byte_count -= num_bytes; /* re-enable dma */ - if ((async->events & COMEDI_CB_EOA) == 0) { + if (!(async->events & COMEDI_CB_CANCEL_MASK)) { struct comedi_isadma_desc *nxt_desc = &dma->desc[dma->cur_dma]; nxt_desc->size = nxt_desc->maxsize; |