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staging: comedi: amplc_dio200: cleanup "find pci device" code

Browse source 
For aesthetic reasons, rename the function and pass the
comedi_devconfig struct instead of pre-parsing out the bus/slot
information.

Use for_each_pci_dev() instead of open-coding the loop using
pci_get_device().

Consolidate the dev_err messages when a pci device is not found.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
H Hartley Sweeten 2012-07-18 18:37:31 -07:00 committed by Greg Kroah-Hartman
parent c2eb50bbdb
commit dd90576838
1 changed files with 15 additions and 27 deletions
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42
drivers/staging/comedi/drivers/amplc_dio200.c
View file

@ -469,23 +469,23 @@ dio200_find_pci_board(struct pci_dev *pci_dev)
* This function looks for a PCI device matching the requested board name,
* bus and slot.
*/
static struct pci_dev *
dio200_find_pci(struct comedi_device *dev, int bus, int slot)
static struct pci_dev *dio200_find_pci_dev(struct comedi_device *dev,
struct comedi_devconfig *it)
{
const struct dio200_board *thisboard = comedi_board(dev);
struct pci_dev *pci_dev = NULL;
int bus = it->options[0];
int slot = it->options[1];
/* Look for matching PCI device. */
for (pci_dev = pci_get_device(PCI_VENDOR_ID_AMPLICON, PCI_ANY_ID, NULL);
pci_dev != NULL;
pci_dev = pci_get_device(PCI_VENDOR_ID_AMPLICON,
PCI_ANY_ID, pci_dev)) {
/* If bus/slot specified, check them. */
for_each_pci_dev(pci_dev) {
if (bus || slot) {
if (bus != pci_dev->bus->number
|| slot != PCI_SLOT(pci_dev->devfn))
if (bus != pci_dev->bus->number ||
slot != PCI_SLOT(pci_dev->devfn))
continue;
}
if (pci_dev->vendor != PCI_VENDOR_ID_AMPLICON)
continue;
if (thisboard->model == anypci_model) {
/* Wildcard board matches any supported PCI board. */
const struct dio200_board *foundboard;
@ -495,25 +495,16 @@ dio200_find_pci(struct comedi_device *dev, int bus, int slot)
continue;
/* Replace wildcard board_ptr. */
dev->board_ptr = foundboard;
thisboard = comedi_board(dev);
} else {
/* Match specific model name. */
if (pci_dev->device != thisboard->devid)
continue;
}
/* Found a match. */
return pci_dev;
}
/* No match found. */
if (bus || slot) {
dev_err(dev->class_dev,
"error! no %s found at pci %02x:%02x!\n",
thisboard->name, bus, slot);
} else {
dev_err(dev->class_dev, "error! no %s found!\n",
thisboard->name);
}
dev_err(dev->class_dev,
"No supported board found! (req. bus %d, slot %d)\n",
bus, slot);
return NULL;
}
@ -1385,12 +1376,9 @@ static int dio200_attach(struct comedi_device *dev, struct comedi_devconfig *it)
} else if (IS_ENABLED(CONFIG_COMEDI_AMPLC_DIO200_PCI) &&
thisboard->bustype == pci_bustype) {
struct pci_dev *pci_dev;
int bus, slot;
bus = it->options[0];
slot = it->options[1];
pci_dev = dio200_find_pci(dev, bus, slot);
if (pci_dev == NULL)
pci_dev = dio200_find_pci_dev(dev, it);
if (!pci_dev)
return -EIO;
return dio200_pci_common_attach(dev, pci_dev);
} else {