PARISC: fix wrong assumption about bus->self

Kenji Kaneshige <[email protected]> posted a patch series to linux-pci to fix a wrong assumption about pci_bus->self==NULL for all PCI host bus controllers. While PARISC platforms to not behave this way, I prefer to have the code consistent across architectures. The following patch replaces pci_bus->self with pci_bus->parent when used as a test to check for "root bus controller".

Signed-off-by Grant Grundler <[email protected]>

---
Kyle, AFAIK, this isn't urgent for parisc and can wait for 2.6.30. Not unless you or jejb feel strongly it should go in at around the same time as the patches from Kenji-san go in.

drivers/parisc/dino.c +1 -1

index d539d9d..f79266c 100644
@@ -587,7 +587,7 @@ dino_fixup_bus(struct pci_bus *bus)
 			bus->resource[i+1] = &res[i];
 		}
 
-	} else if(bus->self) {
+	} else if (bus->parent) {
 		int i;
 
 		pci_read_bridge_bases(bus);

drivers/parisc/iosapic.c +4 -5

index 0797659..1cdfdea 100644
@@ -487,7 +487,7 @@ iosapic_xlate_pin(struct iosapic_info *isi, struct pci_dev *pcidev)
 	}
 
 	/* Check if pcidev behind a PPB */
-	if (NULL != pcidev->bus->self) {
+	if (pcidev->bus->parent) {
 		/* Convert pcidev INTR_PIN into something we
 		** can lookup in the IRT.
 		*/

@@ -523,10 +523,9 @@ iosapic_xlate_pin(struct iosapic_info *isi, struct pci_dev *pcidev)
 #endif /* PCI_BRIDGE_FUNCS */
 
 		/*
-		** Locate the host slot the PPB nearest the Host bus
-		** adapter.
-		*/
-		while (NULL != p->parent->self)
+		 * Locate the host slot of the PPB.
+		 */
+		while (p->parent->parent)
 			p = p->parent;
 
 		intr_slot = PCI_SLOT(p->self->devfn);

drivers/parisc/lba_pci.c +2 -3

index d8233de..59fbbf1 100644
@@ -644,7 +644,7 @@ lba_fixup_bus(struct pci_bus *bus)
 	** Properly Setup MMIO resources for this bus.
 	** pci_alloc_primary_bus() mangles this.
 	*/
-	if (bus->self) {
+	if (bus->parent) {
 		int i;
 		/* PCI-PCI Bridge */
 		pci_read_bridge_bases(bus);

@@ -802,7 +802,7 @@ lba_fixup_bus(struct pci_bus *bus)
 ** Can't fixup here anyway....garr...
 */
 	if (fbb_enable) {
-		if (bus->self) {
+		if (bus->parent) {
 			u8 control;
 			/* enable on PPB */
 			(void) pci_read_config_byte(bus->self, PCI_BRIDGE_CONTROL, &control);
--

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