staging: comedi: dt9812: pass the comedi_device * to dt9812_analog_out()

For aesthetic reasons, instead of passing the struct usb_dt9812 pointer,
pass the comedi_device pointer to this function and rename the local
variable 'result' to simply 'ret'.

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

diff --git a/drivers/staging/comedi/drivers/dt9812.c b/drivers/staging/comedi/drivers/dt9812.c
index 965e96ddb8d15531ae2710ee518ae937fef1a7ad..3e471baaea0edbb6f0f45fec27925781717a99da 100644 (file)
--- a/drivers/staging/comedi/drivers/dt9812.c
+++ b/drivers/staging/comedi/drivers/dt9812.c
@@ -603,9 +603,11 @@ static int dt9812_analog_out_shadow(struct slot_dt9812 *slot, int channel,
        return result;
 }
 
-static int dt9812_analog_out(struct slot_dt9812 *slot, int channel, u16 value)
+static int dt9812_analog_out(struct comedi_device *dev, int channel, u16 value)
 {
-       int result = -ENODEV;
+       struct dt9812_private *devpriv = dev->private;
+       struct slot_dt9812 *slot = devpriv->slot;
+       int ret = -ENODEV;
 
        down(&slot->mutex);
        if (slot->usb) {
@@ -648,12 +650,12 @@ static int dt9812_analog_out(struct slot_dt9812 *slot, int channel, u16 value)
                        rmw[2].or_value = (value >> 8) & 0xf;
                        break;
                }
-               result = dt9812_rmw_multiple_registers(slot->usb, 3, rmw);
+               ret = dt9812_rmw_multiple_registers(slot->usb, 3, rmw);
                slot->usb->analog_out_shadow[channel] = value;
        }
        up(&slot->mutex);
 
-       return result;
+       return ret;
 }
 
 static int dt9812_di_rinsn(struct comedi_device *dev,
@@ -727,12 +729,11 @@ static int dt9812_ao_winsn(struct comedi_device *dev,
                           struct comedi_subdevice *s, struct comedi_insn *insn,
                           unsigned int *data)
 {
-       struct dt9812_private *devpriv = dev->private;
        unsigned int channel = CR_CHAN(insn->chanspec);
        int n;
 
        for (n = 0; n < insn->n; n++)
-               dt9812_analog_out(devpriv->slot, channel, data[n]);
+               dt9812_analog_out(dev, channel, data[n]);
        return n;
 }