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staging: comedi: amplc_dio200: Change return type of dio200_find_pci()

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dio200_find_pci() finds a supported PCI device, returning 0 on success
or -EIO on failure and returning the pointer to the PCI device via a
struct pci_dev ** parameter.  Change it to return the struct pci_dev *
on success or NULL on failure.

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ian Abbott 2012-05-31 14:08:35 +01:00 committed by Greg Kroah-Hartman
parent 485455d01b
commit 181ad5edbf
1 changed files with 8 additions and 12 deletions
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20
drivers/staging/comedi/drivers/amplc_dio200.c
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@ -463,14 +463,11 @@ struct dio200_subdev_intr {
* This function looks for a PCI device matching the requested board name,
* bus and slot.
*/
static int
dio200_find_pci(struct comedi_device *dev, int bus, int slot,
struct pci_dev **pci_dev_p)
static struct pci_dev *
dio200_find_pci(struct comedi_device *dev, int bus, int slot)
{
struct pci_dev *pci_dev = NULL;
*pci_dev_p = NULL;
/* Look for matching PCI device. */
for (pci_dev = pci_get_device(PCI_VENDOR_ID_AMPLICON, PCI_ANY_ID, NULL);
pci_dev != NULL;
@ -504,8 +501,7 @@ dio200_find_pci(struct comedi_device *dev, int bus, int slot,
}
/* Found a match. */
*pci_dev_p = pci_dev;
return 0;
return pci_dev;
}
/* No match found. */
if (bus || slot) {
@ -516,7 +512,7 @@ dio200_find_pci(struct comedi_device *dev, int bus, int slot,
dev_err(dev->class_dev, "error! no %s found!\n",
thisboard->name);
}
return -EIO;
return NULL;
}
/*
@ -1293,15 +1289,15 @@ static int dio200_attach(struct comedi_device *dev, struct comedi_devconfig *it)
return ret;
} else if (IS_ENABLED(CONFIG_COMEDI_AMPLC_DIO200_PCI) &&
thisboard->bustype == pci_bustype) {
struct pci_dev *pci_dev = NULL;
struct pci_dev *pci_dev;
int bus, slot;
bus = it->options[0];
slot = it->options[1];
share_irq = 1;
ret = dio200_find_pci(dev, bus, slot, &pci_dev);
if (ret < 0)
return ret;
pci_dev = dio200_find_pci(dev, bus, slot);
if (pci_dev == NULL)
return -EIO;
devpriv->pci_dev = pci_dev;
ret = comedi_pci_enable(pci_dev, DIO200_DRIVER_NAME);
if (ret < 0) {