staging: comedi: ni_labpc_common: (!foo) preferred over (foo == NULL)

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>

diff --git a/drivers/staging/comedi/drivers/ni_labpc_common.c b/drivers/staging/comedi/drivers/ni_labpc_common.c
index 74518c5..0dac8cf 100644 (file)
--- a/drivers/staging/comedi/drivers/ni_labpc_common.c
+++ b/drivers/staging/comedi/drivers/ni_labpc_common.c
@@ -428,7 +428,7 @@ static enum scan_mode labpc_ai_scan_mode(const struct comedi_cmd *cmd)
                return MODE_SINGLE_CHAN;
 
        /* chanlist may be NULL during cmdtest */
-       if (cmd->chanlist == NULL)
+       if (!cmd->chanlist)
                return MODE_MULT_CHAN_UP;
 
        chan0 = CR_CHAN(cmd->chanlist[0]);