- if (CR_AREF(chanlist[0]) == AREF_DIFF)
- differencial = 1; /* all input must be diff */
- if (CR_RANGE(chanlist[0]) < PCI9118_BIPOLAR_RANGES)
- bipolar = 1; /* all input must be bipolar */
- if (n_chan > 1)
- for (i = 1; i < n_chan; i++) { /* check S.E/diff */
- if ((CR_AREF(chanlist[i]) == AREF_DIFF) !=
- (differencial)) {
- dev_err(dev->class_dev,
- "Differential and single ended inputs can't be mixed!\n");
- return 0;
- }
- if ((CR_RANGE(chanlist[i]) < PCI9118_BIPOLAR_RANGES) !=
- (bipolar)) {
- dev_err(dev->class_dev,
- "Bipolar and unipolar ranges can't be mixed!\n");
- return 0;
- }
- if (!devpriv->usemux && differencial &&
- (CR_CHAN(chanlist[i]) >= (s->n_chan / 2))) {
- dev_err(dev->class_dev,
- "AREF_DIFF is only available for the first 8 channels!\n");
- return 0;
- }
+ for (i = 1; i < cmd->chanlist_len; i++) {
+ unsigned int chan = CR_CHAN(cmd->chanlist[i]);
+ unsigned int range = CR_RANGE(cmd->chanlist[i]);
+ unsigned int aref = CR_AREF(cmd->chanlist[i]);
+
+ if (aref != aref0) {
+ dev_err(dev->class_dev,
+ "Differential and single ended inputs can't be mixed!\n");
+ return -EINVAL;
+ }
+ if (comedi_range_is_bipolar(s, range) !=
+ comedi_range_is_bipolar(s, range0)) {
+ dev_err(dev->class_dev,
+ "Bipolar and unipolar ranges can't be mixed!\n");
+ return -EINVAL;