staging: comedi: das800: add a local var for the comedi_cmd pointer

For aesthetics, use a local variable to access the comedi_cmd as a
pointer in das800_ai_do_cmd() instead of getting to it from the
comedi_async pointer.

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/das800.c b/drivers/staging/comedi/drivers/das800.c
index 38f6a6d..1e2e3d5 100644 (file)
--- a/drivers/staging/comedi/drivers/das800.c
+++ b/drivers/staging/comedi/drivers/das800.c
@@ -404,9 +404,10 @@ static int das800_ai_do_cmd(struct comedi_device *dev,
        const struct das800_board *thisboard = comedi_board(dev);
        struct das800_private *devpriv = dev->private;
        struct comedi_async *async = s->async;
-       unsigned int gain = CR_RANGE(async->cmd.chanlist[0]);
-       unsigned int start_chan = CR_CHAN(async->cmd.chanlist[0]);
-       unsigned int end_chan = (start_chan + async->cmd.chanlist_len - 1) % 8;
+       struct comedi_cmd *cmd = &async->cmd;
+       unsigned int gain = CR_RANGE(cmd->chanlist[0]);
+       unsigned int start_chan = CR_CHAN(cmd->chanlist[0]);
+       unsigned int end_chan = (start_chan + cmd->chanlist_len - 1) % 8;
        unsigned int scan_chans = (end_chan << 3) | start_chan;
        int conv_bits;
        unsigned long irq_flags;
@@ -424,8 +425,8 @@ static int das800_ai_do_cmd(struct comedi_device *dev,
        gain &= 0xf;
        outb(gain, dev->iobase + DAS800_GAIN);
 
-       if (async->cmd.stop_src == TRIG_COUNT) {
-               devpriv->count = async->cmd.stop_arg * async->cmd.chanlist_len;
+       if (cmd->stop_src == TRIG_COUNT) {
+               devpriv->count = cmd->stop_arg * cmd->chanlist_len;
                devpriv->forever = false;
        } else {        /* TRIG_NONE */
                devpriv->forever = true;
@@ -437,9 +438,9 @@ static int das800_ai_do_cmd(struct comedi_device *dev,
         */
        conv_bits = 0;
        conv_bits |= EACS | IEOC;
-       if (async->cmd.start_src == TRIG_EXT)
+       if (cmd->start_src == TRIG_EXT)
                conv_bits |= DTEN;
-       if (async->cmd.convert_src == TRIG_TIMER) {
+       if (cmd->convert_src == TRIG_TIMER) {
                conv_bits |= CASC | ITE;
                /* set conversion frequency */
                das800_set_frequency(dev);