diff options
| author | H Hartley Sweeten <hsweeten@visionengravers.com> | 2014-11-05 10:21:03 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-11-05 14:59:47 -0800 |
| commit | aee15aea0d8e879ec22142491611d98ab987d2ba (patch) | |
| tree | cfbef48d780c0e824edc0c43f2aaf86305526227 | |
| parent | b03130b649840f5a25941a7e8ae78dea6d750c85 (diff) | |
staging: comedi: s626: use comedi_async 'scans_done' to detect EOA
Remove the private data member 'ai_sample_count' and use the comedi_async
'scans_done' member to detect the end-of-acquisition.
Also, remove the unnecessary COMEDI_CB_EOS event. The core automatically
detects and adds that event.
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>
| -rw-r--r-- | drivers/staging/comedi/drivers/s626.c | 16 |
1 files changed, 4 insertions, 12 deletions
diff --git a/drivers/staging/comedi/drivers/s626.c b/drivers/staging/comedi/drivers/s626.c index 6976bb098f54..fc7d8a572bf3 100644 --- a/drivers/staging/comedi/drivers/s626.c +++ b/drivers/staging/comedi/drivers/s626.c @@ -78,7 +78,6 @@ struct s626_buffer_dma { struct s626_private { uint8_t ai_cmd_running; /* ai_cmd is running */ - int ai_sample_count; /* number of samples to acquire */ unsigned int ai_sample_timer; /* time between samples in * units of the timer */ int ai_convert_count; /* conversion counter */ @@ -1496,16 +1495,11 @@ static bool s626_handle_eos_interrupt(struct comedi_device *dev) comedi_buf_write_samples(s, &tempdata, 1); } - /* end of scan occurs */ - async->events |= COMEDI_CB_EOS; + if (cmd->stop_src == TRIG_COUNT && async->scans_done >= cmd->stop_arg) + async->events |= COMEDI_CB_EOA; - if (cmd->stop_src == TRIG_COUNT) { - devpriv->ai_sample_count--; - if (devpriv->ai_sample_count <= 0) { - devpriv->ai_cmd_running = 0; - async->events |= COMEDI_CB_EOA; - } - } + if (async->events & COMEDI_CB_CANCEL_MASK) + devpriv->ai_cmd_running = 0; if (devpriv->ai_cmd_running && cmd->scan_begin_src == TRIG_EXT) s626_dio_set_irq(dev, cmd->scan_begin_arg); @@ -2091,8 +2085,6 @@ static int s626_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s) break; } - devpriv->ai_sample_count = cmd->stop_arg; - s626_reset_adc(dev, ppl); switch (cmd->start_src) { |