staging: comedi: cb_das16_cs: remove unneeded default case in analog in read

The default (return -EINVAL) case is not needed when working
out the correct value to set the analog input range. As pointed
out by Ian Abbott, the comedi core checks the range in
comedi_check_chanlist() before calling the insn_read() function.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reported-by: Ian Abbott <abbotti@mev.co.uk>
Cc: Frank Mori Hess <fmhess@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 0 insertions, 2 deletions

diff --git a/drivers/staging/comedi/drivers/cb_das16_cs.c b/drivers/staging/comedi/drivers/cb_das16_cs.c
index 95fa7e2fea9d..58d45299bf85 100644
--- a/drivers/staging/comedi/drivers/cb_das16_cs.c
+++ b/drivers/staging/comedi/drivers/cb_das16_cs.c
@@ -136,8 +136,6 @@ static int das16cs_ai_rinsn(struct comedi_device *dev,
         case 3:
                 devpriv->status2 |= 0x200;
                 break;
-        default:
-                return -EINVAL;
         }
         outw(devpriv->status2, dev->iobase + DAS16CS_MISC2);