undipci_probe() has to calculate busdevfn anyway, so we may as well pass

it directly to undi_load_pci().

src/arch/i386/drivers/net/undi.c

 		}
 
 		/* Call UNDI ROM loader to create pixie */
-		if ( ( rc = undi_load_pci ( undi, undirom, pci->bus,
-					    pci->devfn ) ) != 0 )
+		if ( ( rc = undi_load_pci ( undi, undirom, busdevfn ) ) != 0 )
 			goto err_load_pci;
 	}
 

src/arch/i386/drivers/net/undiload.c

  * @v undirom		UNDI ROM
  * @ret rc		Return status code
  */
-static int undi_load ( struct undi_device *undi, struct undi_rom *undirom ) {
+int undi_load ( struct undi_device *undi, struct undi_rom *undirom ) {
 	struct s_PXE ppxe;
 	uint16_t fbms;
 	unsigned int fbms_seg;
 	return 0;
 }
 
-/**
- * Call UNDI loader to create a pixie
- *
- * @v undi		UNDI device
- * @v undirom		UNDI ROM
- * @v pci_busdevfn	PCI bus:dev.fn
- * @ret rc		Return status code
- */
-int undi_load_pci ( struct undi_device *undi, struct undi_rom *undirom,
-		    unsigned int bus, unsigned int devfn ) {
-	undi->pci_busdevfn = ( ( bus << 8 ) | devfn );
-	undi->isapnp_csn = 0xffff;
-	undi->isapnp_read_port = 0xffff;
-	return undi_load ( undi, undirom );
-}
-
 /**
  * Unload a pixie
  *
 	/* Erase signatures */
 	if ( undi->pxenv.segment )
 		put_real ( dead, undi->pxenv.segment, undi->pxenv.offset );
-	if ( undi->ppxe_segment )
+	if ( undi->ppxe.segment )
 		put_real ( dead, undi->ppxe.segment, undi->ppxe.offset );
 
 	/* Free base memory, if possible */

src/arch/i386/include/undiload.h

 struct undi_device;
 struct undi_rom;
 
-extern int undi_load_pci ( struct undi_device *undi, struct undi_rom *undirom,
-			   unsigned int bus, unsigned int devfn );
+extern int undi_load ( struct undi_device *undi, struct undi_rom *undirom );
 extern int undi_unload ( struct undi_device *undi );
 
+/**
+ * Call UNDI loader to create a pixie
+ *
+ * @v undi		UNDI device
+ * @v undirom		UNDI ROM
+ * @v pci_busdevfn	PCI bus:dev.fn
+ * @ret rc		Return status code
+ */
+static inline int undi_load_pci ( struct undi_device *undi,
+				  struct undi_rom *undirom,
+				  unsigned int pci_busdevfn ) {
+	undi->pci_busdevfn = pci_busdevfn;
+	undi->isapnp_csn = 0xffff;
+	undi->isapnp_read_port = 0xffff;
+	return undi_load ( undi, undirom );
+}
+
 #endif /* _UNDILOAD_H */