diff options
Diffstat (limited to 'drivers/staging/comedi')
| -rw-r--r-- | drivers/staging/comedi/drivers/dt2814.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/staging/comedi/drivers/dt2814.c b/drivers/staging/comedi/drivers/dt2814.c index d18f9a5a9fb1..ed44ce0d151b 100644 --- a/drivers/staging/comedi/drivers/dt2814.c +++ b/drivers/staging/comedi/drivers/dt2814.c @@ -346,11 +346,24 @@ static int dt2814_attach(struct comedi_device *dev, struct comedi_devconfig *it) return 0; } +static void dt2814_detach(struct comedi_device *dev) +{ + if (dev->irq) { + /* + * An extra conversion triggered on termination of an + * asynchronous command may still be in progress. Wait for + * it to finish and clear the data or error status. + */ + dt2814_ai_clear(dev); + } + comedi_legacy_detach(dev); +} + static struct comedi_driver dt2814_driver = { .driver_name = "dt2814", .module = THIS_MODULE, .attach = dt2814_attach, - .detach = comedi_legacy_detach, + .detach = dt2814_detach, }; module_comedi_driver(dt2814_driver); |