diff options
Diffstat (limited to 'drivers/staging/comedi')
| -rw-r--r-- | drivers/staging/comedi/drivers.c | 26 |
1 files changed, 13 insertions, 13 deletions
diff --git a/drivers/staging/comedi/drivers.c b/drivers/staging/comedi/drivers.c index 9d733471ca2e..57dd63d548b7 100644 --- a/drivers/staging/comedi/drivers.c +++ b/drivers/staging/comedi/drivers.c @@ -473,21 +473,21 @@ unsigned int comedi_nsamples_left(struct comedi_subdevice *s, { struct comedi_async *async = s->async; struct comedi_cmd *cmd = &async->cmd; + unsigned long long scans_left; + unsigned long long samples_left; - if (cmd->stop_src == TRIG_COUNT) { - unsigned int scans_left = __comedi_nscans_left(s, cmd->stop_arg); - unsigned int scan_pos = - comedi_bytes_to_samples(s, async->scan_progress); - unsigned long long samples_left = 0; - - if (scans_left) { - samples_left = ((unsigned long long)scans_left * - cmd->scan_end_arg) - scan_pos; - } + if (cmd->stop_src != TRIG_COUNT) + return nsamples; - if (samples_left < nsamples) - nsamples = samples_left; - } + scans_left = __comedi_nscans_left(s, cmd->stop_arg); + if (!scans_left) + return 0; + + samples_left = scans_left * cmd->scan_end_arg - + comedi_bytes_to_samples(s, async->scan_progress); + + if (samples_left < nsamples) + return samples_left; return nsamples; } EXPORT_SYMBOL_GPL(comedi_nsamples_left); |