[PATCH] [x86] pci: Get rid of magic number in AMD bus discovery

[dann frazier <dannf@hp.com>]

The number 4 is hardcoded in a couple of loops.
Use the already-defined PCI_ROOT_NR macro instead.

Signed-off-by: dann frazier <dannf@hp.com>
---
 arch/x86/pci/amd_bus.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/pci/amd_bus.c b/arch/x86/pci/amd_bus.c
index 3ffa10d..feb3e09 100644
--- a/arch/x86/pci/amd_bus.c
+++ b/arch/x86/pci/amd_bus.c
@@ -332,7 +332,7 @@ static int __init early_fill_mp_bus_info(void)
 		return 0;
 
 	pci_root_num = 0;
-	for (i = 0; i < 4; i++) {
+	for (i = 0; i < PCI_ROOT_NR; i++) {
 		int min_bus;
 		int max_bus;
 		reg = read_pci_config(bus, slot, 1, 0xe0 + (i << 2));
@@ -368,7 +368,7 @@ static int __init early_fill_mp_bus_info(void)
 	memset(range, 0, sizeof(range));
 	range[0].end = 0xffff;
 	/* io port resource */
-	for (i = 0; i < 4; i++) {
+	for (i = 0; i < PCI_ROOT_NR; i++) {
 		reg = read_pci_config(bus, slot, 1, 0xc0 + (i << 3));
 		if (!(reg & 3))
 			continue;
-- 
1.6.3.3