[PATCH] mmconfig: minor cleanup in mmconfig code

This just cleans up.

Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Andi Kleen <ak@suse.de>

1 files changed, 4 insertions, 12 deletions

diff --git a/arch/x86_64/pci/mmconfig.c b/arch/x86_64/pci/mmconfig.c
index 50512a8fc9e8..918fc5b95a06 100644
--- a/arch/x86_64/pci/mmconfig.c
+++ b/arch/x86_64/pci/mmconfig.c
@@ -13,10 +13,6 @@
 
 #include "pci.h"
 
-/* Verify the first 16 busses. We assume that systems with more busses
-   get MCFG right. */
-#define PCI_MMCFG_MAX_CHECK_BUS 16
-
 /* Static virtual mapping of the MMCONFIG aperture */
 struct mmcfg_virt {
         struct acpi_mcfg_allocation *cfg;
@@ -26,17 +22,13 @@ static struct mmcfg_virt *pci_mmcfg_virt;
 
 static char __iomem *get_virt(unsigned int seg, unsigned bus)
 {
-        int cfg_num = -1;
         struct acpi_mcfg_allocation *cfg;
+        int cfg_num;
 
-        while (1) {
-                ++cfg_num;
-                if (cfg_num >= pci_mmcfg_config_num)
-                        break;
+        for (cfg_num = 0; cfg_num < pci_mmcfg_config_num; cfg_num++) {
                 cfg = pci_mmcfg_virt[cfg_num].cfg;
-                if (cfg->pci_segment != seg)
-                        continue;
-                if ((cfg->start_bus_number <= bus) &&
+                if (cfg->pci_segment == seg &&
+                    (cfg->start_bus_number <= bus) &&
                     (cfg->end_bus_number >= bus))
                         return pci_mmcfg_virt[cfg_num].virt;
         }