diff options
Diffstat (limited to 'drivers/staging/comedi/drivers/poc.c')
| -rw-r--r-- | drivers/staging/comedi/drivers/poc.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/staging/comedi/drivers/poc.c b/drivers/staging/comedi/drivers/poc.c index 78dfe167b147..d7842c95d982 100644 --- a/drivers/staging/comedi/drivers/poc.c +++ b/drivers/staging/comedi/drivers/poc.c @@ -57,13 +57,18 @@ struct boarddef_struct { const struct comedi_lrange *range; }; +struct poc_private { + unsigned int ao_readback[32]; +}; + static int readback_insn(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data) { + struct poc_private *devpriv = dev->private; int chan; chan = CR_CHAN(insn->chanspec); - data[0] = ((unsigned int *)dev->private)[chan]; + data[0] = devpriv->ao_readback[chan]; return 1; } @@ -75,12 +80,13 @@ static int readback_insn(struct comedi_device *dev, struct comedi_subdevice *s, static int dac02_ao_winsn(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data) { + struct poc_private *devpriv = dev->private; int temp; int chan; int output; chan = CR_CHAN(insn->chanspec); - ((unsigned int *)dev->private)[chan] = data[0]; + devpriv->ao_readback[chan] = data[0]; output = data[0]; #ifdef wrong /* convert to complementary binary if range is bipolar */ @@ -131,6 +137,7 @@ static int pcl734_insn_bits(struct comedi_device *dev, static int poc_attach(struct comedi_device *dev, struct comedi_devconfig *it) { const struct boarddef_struct *board = comedi_board(dev); + struct poc_private *devpriv; struct comedi_subdevice *s; unsigned long iobase; unsigned int iosize; @@ -160,8 +167,10 @@ static int poc_attach(struct comedi_device *dev, struct comedi_devconfig *it) if (ret) return ret; - if (alloc_private(dev, sizeof(unsigned int) * board->n_chan) < 0) + devpriv = kzalloc(sizeof(*devpriv), GFP_KERNEL); + if (!devpriv) return -ENOMEM; + dev->private = devpriv; /* analog output subdevice */ s = &dev->subdevices[0]; |