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pci: Introduce pci_find_present

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This works like pci_dev_present but instead of returning boolean returns
the matching pci_device_id entry.  This makes it much more useful.  Code
bloat is basically nil as the old boolean function is rewritten in terms of
the new one.

This will be used by the updated VIA PCI quirks for one

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Alan Cox
2006-12-04 15:14:44 -08:00
committed by Greg Kroah-Hartman
parent 83e42bcdd3
commit d86f90f991
2 changed files with 24 additions and 17 deletions
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39
drivers/pci/search.c
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@@ -413,6 +413,24 @@ exit:
return dev;
}
const struct pci_device_id *pci_find_present(const struct pci_device_id *ids)
{
struct pci_dev *dev;
struct pci_device_id * found = NULL;
WARN_ON(in_interrupt());
down_read(&pci_bus_sem);
while (ids->vendor || ids->subvendor || ids->class_mask) {
list_for_each_entry(dev, &pci_devices, global_list) {
if ((found = pci_match_one_device(ids, dev)) != NULL)
break;
}
ids++;
}
up_read(&pci_bus_sem);
return found;
}
/**
* pci_dev_present - Returns 1 if device matching the device list is present, 0 if not.
* @ids: A pointer to a null terminated list of struct pci_device_id structures
@@ -424,27 +442,14 @@ exit:
* find devices that are usually built into a system, or for a general hint as
* to if another device happens to be present at this specific moment in time.
*/
int pci_dev_present(const struct pci_device_id *ids)
{
struct pci_dev *dev;
int found = 0;
WARN_ON(in_interrupt());
down_read(&pci_bus_sem);
while (ids->vendor || ids->subvendor || ids->class_mask) {
list_for_each_entry(dev, &pci_devices, global_list) {
if (pci_match_one_device(ids, dev)) {
found = 1;
goto exit;
}
}
ids++;
}
exit:
up_read(&pci_bus_sem);
return found;
return pci_find_present(ids) == NULL ? 0 : 1;
}
EXPORT_SYMBOL(pci_dev_present);
EXPORT_SYMBOL(pci_find_present);
EXPORT_SYMBOL(pci_find_device);
EXPORT_SYMBOL(pci_find_device_reverse);