};
-/*
- * most drivers define the following macro to make it easy to
- * access the private structure.
- */
-#define devpriv ((struct dmm32at_private *)dev->private)
-
/*
* "instructions" read/write data in "one-shot" or "software-triggered"
* mode.
static int dmm32at_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
{
+ struct dmm32at_private *devpriv = dev->private;
struct comedi_cmd *cmd = &s->async->cmd;
int i, range;
unsigned char chanlo, chanhi, status;
static int dmm32at_ai_cancel(struct comedi_device *dev,
struct comedi_subdevice *s)
{
+ struct dmm32at_private *devpriv = dev->private;
+
devpriv->ai_scans_left = 1;
return 0;
}
static irqreturn_t dmm32at_isr(int irq, void *d)
{
+ struct comedi_device *dev = d;
+ struct dmm32at_private *devpriv = dev->private;
unsigned char intstat;
unsigned int samp;
unsigned short msb, lsb;
int i;
- struct comedi_device *dev = d;
if (!dev->attached) {
comedi_error(dev, "spurious interrupt");
struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data)
{
+ struct dmm32at_private *devpriv = dev->private;
int i;
int chan = CR_CHAN(insn->chanspec);
unsigned char hi, lo, status;
struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data)
{
+ struct dmm32at_private *devpriv = dev->private;
int i;
int chan = CR_CHAN(insn->chanspec);
struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data)
{
+ struct dmm32at_private *devpriv = dev->private;
unsigned char diobits;
/* The insn data is a mask in data[0] and the new data
struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data)
{
+ struct dmm32at_private *devpriv = dev->private;
unsigned char chanbit;
int chan = CR_CHAN(insn->chanspec);
struct comedi_devconfig *it)
{
const struct dmm32at_board *board = comedi_board(dev);
+ struct dmm32at_private *devpriv;
int ret;
struct comedi_subdevice *s;
unsigned char aihi, ailo, fifostat, aistat, intstat, airback;
* Allocate the private structure area. alloc_private() is a
* convenient macro defined in comedidev.h.
*/
- if (alloc_private(dev, sizeof(struct dmm32at_private)) < 0)
+ if (alloc_private(dev, sizeof(*devpriv)) < 0)
return -ENOMEM;
+ devpriv = dev->private;
ret = comedi_alloc_subdevices(dev, 3);
if (ret)