staging: comedi: mpc624: remove unnecessary test

It's not necessaary to vaidate insn->n passed to the (*insn_read)
function. The for() loop following it will just be a NOP.

Remove the test as well as the printk noise.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 0 insertions, 4 deletions

diff --git a/drivers/staging/comedi/drivers/mpc624.c b/drivers/staging/comedi/drivers/mpc624.c
index 2d6add4f97f7..b105dd98c358 100644
--- a/drivers/staging/comedi/drivers/mpc624.c
+++ b/drivers/staging/comedi/drivers/mpc624.c
@@ -159,10 +159,6 @@ static int mpc624_ai_rinsn(struct comedi_device *dev,
          *  We always write 0 to GNSWA bit, so the channel range is +-/10.1Vdc
          */
         outb(insn->chanspec, dev->iobase + MPC624_GNMUXCH);
-        if (!insn->n) {
-                printk(KERN_INFO "MPC624: Warning, no data to acquire\n");
-                return 0;
-        }
 
         for (n = 0; n < insn->n; n++) {
                 /*  Trigger the conversion */