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path: root/drivers/comedi/drivers/comedi_test.c
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Diffstat (limited to 'drivers/comedi/drivers/comedi_test.c')
-rw-r--r--drivers/comedi/drivers/comedi_test.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/comedi/drivers/comedi_test.c b/drivers/comedi/drivers/comedi_test.c
index 9747e6d1f6eb..7984950f0f99 100644
--- a/drivers/comedi/drivers/comedi_test.c
+++ b/drivers/comedi/drivers/comedi_test.c
@@ -792,7 +792,7 @@ static void waveform_detach(struct comedi_device *dev)
{
struct waveform_private *devpriv = dev->private;
- if (devpriv) {
+ if (devpriv && dev->n_subdevices) {
timer_delete_sync(&devpriv->ai_timer);
timer_delete_sync(&devpriv->ao_timer);
}