1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/staging/comedi/drivers/das08.c b/drivers/staging/comedi/drivers/das08.c
index 5fd21fa6c1c7..c304528cfb13 100644
--- a/drivers/staging/comedi/drivers/das08.c
+++ b/drivers/staging/comedi/drivers/das08.c
@@ -846,6 +846,8 @@ static void __maybe_unused das08_detach(struct comedi_device *dev)
 {
         const struct das08_board_struct *thisboard = comedi_board(dev);
 
+        if (!thisboard)
+                return;
         das08_common_detach(dev);
         if (is_isa_board(thisboard)) {
                 if (dev->iobase)