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staging: comedi: ni_670x: use comedi attach_pci callback

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Convert this PCI driver to use the comedi `attach_pci` callback instead
of the `attach` callback for PCI auto-configuration.  There is no need
to support manual attachment of PCI devices supported by this driver, so
remove the `attach` callback altogether.

Note that this driver still uses the list of PCI "mite" devices created
by the "mite" module.  This will be dealt with by a later patch once
dynamic allocation of "mite" structures has been implemented.

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Reviewed-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ian Abbott
2012-09-14 17:34:10 +01:00
committed by Greg Kroah-Hartman
parent b64c0f51cb
commit c33e23f776
1 changed files with 28 additions and 27 deletions
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55
drivers/staging/comedi/drivers/ni_670x.c
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@@ -187,37 +187,36 @@ static int ni_670x_dio_insn_config(struct comedi_device *dev,
return insn->n;
}
static int ni_670x_find_device(struct comedi_device *dev, int bus, int slot)
/* FIXME: remove this when dynamic MITE allocation implemented. */
static struct mite_struct *ni_670x_find_mite(struct pci_dev *pcidev)
{
struct ni_670x_private *devpriv = dev->private;
struct mite_struct *mite;
int i;
for (mite = mite_devices; mite; mite = mite->next) {
if (mite->used)
continue;
if (bus || slot) {
if (bus != mite->pcidev->bus->number
|| slot != PCI_SLOT(mite->pcidev->devfn))
continue;
}
for (i = 0; i < ARRAY_SIZE(ni_670x_boards); i++) {
if (mite_device_id(mite) == ni_670x_boards[i].dev_id) {
dev->board_ptr = ni_670x_boards + i;
devpriv->mite = mite;
return 0;
}
}
if (mite->pcidev == pcidev)
return mite;
}
dev_warn(dev->class_dev, "no device found\n");
mite_list_devices();
return -EIO;
return NULL;
}
static int ni_670x_attach(struct comedi_device *dev,
struct comedi_devconfig *it)
static const struct ni_670x_board *
ni_670x_find_boardinfo(struct pci_dev *pcidev)
{
unsigned int dev_id = pcidev->device;
unsigned int n;
for (n = 0; n < ARRAY_SIZE(ni_670x_boards); n++) {
const struct ni_670x_board *board = &ni_670x_boards[n];
if (board->dev_id == dev_id)
return board;
}
return NULL;
}
static int __devinit ni_670x_attach_pci(struct comedi_device *dev,
struct pci_dev *pcidev)
{
const struct ni_670x_board *thisboard;
struct ni_670x_private *devpriv;
@@ -229,10 +228,12 @@ static int ni_670x_attach(struct comedi_device *dev,
if (ret < 0)
return ret;
devpriv = dev->private;
ret = ni_670x_find_device(dev, it->options[0], it->options[1]);
if (ret < 0)
return ret;
dev->board_ptr = ni_670x_find_boardinfo(pcidev);
if (!dev->board_ptr)
return -ENODEV;
devpriv->mite = ni_670x_find_mite(pcidev);
if (!devpriv->mite)
return -ENODEV;
thisboard = comedi_board(dev);
ret = mite_setup(devpriv->mite);
@@ -311,7 +312,7 @@ static void ni_670x_detach(struct comedi_device *dev)
static struct comedi_driver ni_670x_driver = {
.driver_name = "ni_670x",
.module = THIS_MODULE,
.attach = ni_670x_attach,
.attach_pci = ni_670x_attach_pci,
.detach = ni_670x_detach,
};