Currently the 'detach' function in this driver walks thru the
boardinfo in order to find the subdevice index for any sdio
subdevices in order to call the subdev_8255_cleanup(). Then
it goes thru all the subdevices to clean the s->private pointer.
All the sdio subdevices are unique in that the s->type is
COMEDI_SUBD_DIO. Use that to know when to call the cleanup
for the 8255 subdevice.
Signed-off-by: H Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx>
Cc: Ian Abbott <abbotti@xxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/staging/comedi/drivers/adv_pci_dio.c | 27 +++------------------------
1 file changed, 3 insertions(+), 24 deletions(-)
diff --git a/drivers/staging/comedi/drivers/adv_pci_dio.c b/drivers/staging/comedi/drivers/adv_pci_dio.c
index 2c3dbf0..4da0e7b 100644
--- a/drivers/staging/comedi/drivers/adv_pci_dio.c
+++ b/drivers/staging/comedi/drivers/adv_pci_dio.c
@@ -1176,39 +1176,18 @@ static int pci_dio_attach_pci(struct comedi_device *dev,
static void pci_dio_detach(struct comedi_device *dev)
{
- const struct dio_boardtype *this_board = comedi_board(dev);
struct pci_dio_private *devpriv = dev->private;
struct pci_dev *pcidev = comedi_to_pci_dev(dev);
- int i, j;
struct comedi_subdevice *s;
- int subdev;
+ int i;
if (devpriv) {
if (devpriv->valid)
pci_dio_reset(dev);
- subdev = 0;
- for (i = 0; i < MAX_DI_SUBDEVS; i++) {
- if (this_board->sdi[i].chans)
- subdev++;
- }
- for (i = 0; i < MAX_DO_SUBDEVS; i++) {
- if (this_board->sdo[i].chans)
- subdev++;
- }
- for (i = 0; i < MAX_DIO_SUBDEVG; i++) {
- for (j = 0; j < this_board->sdio[i].regs; j++) {
- s = dev->subdevices + subdev;
- subdev_8255_cleanup(dev, s);
- subdev++;
- }
- }
- if (this_board->boardid.chans)
- subdev++;
- for (i = 0; i < MAX_8254_SUBDEVS; i++)
- if (this_board->s8254[i].chans)
- subdev++;
for (i = 0; i < dev->n_subdevices; i++) {
s = dev->subdevices + i;
+ if (s->type == COMEDI_SUBD_DIO)
+ subdev_8255_cleanup(dev, s);
s->private = NULL;
}
}
--
1.7.11
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