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authorAlan Cox <alan@redhat.com>2006-12-04 15:14:44 -0800
committerGreg Kroah-Hartman <gregkh@suse.de>2006-12-20 10:54:42 -0800
commitd86f90f9913d27bb968132bf63499c56bca56db6 (patch)
treeae7fc2cb3f4f0fd4a7155224918875d53e54c99a /drivers/pci/search.c
parent83e42bcdd3be31a0df8b1a8d2d3fa1a65e43815c (diff)
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pci: Introduce pci_find_present
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>
Diffstat (limited to 'drivers/pci/search.c')
-rw-r--r--drivers/pci/search.c39
1 files changed, 22 insertions, 17 deletions
diff --git a/drivers/pci/search.c b/drivers/pci/search.c
index 2f13eba..2bbafe0 100644
--- a/drivers/pci/search.c
+++ b/drivers/pci/search.c
@@ -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);