diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/staging/comedi/comedidev.h | 1 | ||||
| -rw-r--r-- | drivers/staging/comedi/drivers.c | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/drivers/staging/comedi/comedidev.h b/drivers/staging/comedi/comedidev.h index 70de3558c74e..05cc8dbcd515 100644 --- a/drivers/staging/comedi/comedidev.h +++ b/drivers/staging/comedi/comedidev.h @@ -173,6 +173,7 @@ struct comedi_device { struct device *class_dev; int minor; + unsigned int detach_count; /* hw_dev is passed to dma_alloc_coherent when allocating async buffers * for subdevices that have async_dma_dir set to something other than * DMA_NONE */ diff --git a/drivers/staging/comedi/drivers.c b/drivers/staging/comedi/drivers.c index 4f727731a72d..15b1ab885e77 100644 --- a/drivers/staging/comedi/drivers.c +++ b/drivers/staging/comedi/drivers.c @@ -136,6 +136,7 @@ void comedi_device_detach(struct comedi_device *dev) comedi_device_cancel_all(dev); down_write(&dev->attach_lock); dev->attached = false; + dev->detach_count++; if (dev->driver) dev->driver->detach(dev); comedi_device_detach_cleanup(dev); |