X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;ds=sidebyside;f=drivers%2Fpci%2Fsearch.c;h=c6e79d01ce3d1a8e4f747a762f8e052712320102;hb=ce9d3c9a6a9aef61525be07fe6ba27d937236aa2;hp=2dd8681d6b312a3b6c3c2362315dadddf9bf1de5;hpb=e049d1ca3094f3d1d94617f456a9961202f96e3a;p=mv-sheeva.git

diff --git a/drivers/pci/search.c b/drivers/pci/search.c
index 2dd8681d6b3..c6e79d01ce3 100644
--- a/drivers/pci/search.c
+++ b/drivers/pci/search.c
@@ -15,8 +15,7 @@
 
 DECLARE_RWSEM(pci_bus_sem);
 
-static struct pci_bus *
-pci_do_find_bus(struct pci_bus* bus, unsigned char busnr)
+static struct pci_bus *pci_do_find_bus(struct pci_bus *bus, unsigned char busnr)
 {
 	struct pci_bus* child;
 	struct list_head *tmp;
@@ -140,12 +139,14 @@ struct pci_dev * pci_get_slot(struct pci_bus *bus, unsigned int devfn)
 }
 
 /**
- * pci_get_bus_and_slot - locate PCI device from a given PCI slot
+ * pci_get_bus_and_slot - locate PCI device from a given PCI bus & slot
  * @bus: number of PCI bus on which desired PCI device resides
  * @devfn: encodes number of PCI slot in which the desired PCI
  * device resides and the logical device number within that slot
  * in case of multi-function devices.
  *
+ * Note: the bus/slot search is limited to PCI domain (segment) 0.
+ *
  * Given a PCI bus and slot/function number, the desired PCI device
  * is located in system global list of PCI devices.  If the device
  * is found, a pointer to its data structure is returned.  If no
@@ -158,7 +159,8 @@ struct pci_dev * pci_get_bus_and_slot(unsigned int bus, unsigned int devfn)
 	struct pci_dev *dev = NULL;
 
 	while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
-		if (dev->bus->number == bus && dev->devfn == devfn)
+		if (pci_domain_nr(dev->bus) == 0 &&
+		   (dev->bus->number == bus && dev->devfn == devfn))
 			return dev;
 	}
 	return NULL;
@@ -200,7 +202,7 @@ static struct pci_dev * pci_find_subsys(unsigned int vendor,
 	 * can cause some machines to crash.  So here we detect and flag that
 	 * situation and bail out early.
 	 */
-	if (unlikely(list_empty(&pci_devices)))
+	if (unlikely(no_pci_devices()))
 		return NULL;
 	down_read(&pci_bus_sem);
 	n = from ? from->global_list.next : pci_devices.next;
@@ -275,7 +277,7 @@ pci_get_subsys(unsigned int vendor, unsigned int device,
 	 * can cause some machines to crash.  So here we detect and flag that
 	 * situation and bail out early.
 	 */
-	if (unlikely(list_empty(&pci_devices)))
+	if (unlikely(no_pci_devices()))
 		return NULL;
 	down_read(&pci_bus_sem);
 	n = from ? from->global_list.next : pci_devices.next;
@@ -404,10 +406,11 @@ const struct pci_device_id *pci_find_present(const struct pci_device_id *ids)
 	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;
+				goto exit;
 		}
 		ids++;
 	}
+exit:
 	up_read(&pci_bus_sem);
 	return found;
 }