powerpc/fsl-pci: Only scan PCI bus if configured as a host

We change fsl_add_bridge to return -ENODEV if the controller is working in
agent mode. Then check the return value of fsl_add_bridge to guarantee
that only successfully added host bus will be scanned.

Signed-off-by: Jia Hongtao <B38951@freescale.com>
Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

1 files changed, 8 insertions, 5 deletions

diff --git a/arch/powerpc/sysdev/fsl_pci.c b/arch/powerpc/sysdev/fsl_pci.c
index a7b2a600d0a4..c37f46136321 100644
--- a/arch/powerpc/sysdev/fsl_pci.c
+++ b/arch/powerpc/sysdev/fsl_pci.c
@@ -465,7 +465,7 @@ int __init fsl_add_bridge(struct device_node *dev, int is_primary)
                         iounmap(hose->cfg_data);
                 iounmap(hose->cfg_addr);
                 pcibios_free_controller(hose);
-                return 0;
+                return -ENODEV;
         }
 
         setup_pci_cmd(hose);
@@ -827,6 +827,7 @@ struct device_node *fsl_pci_primary;
 
 void __devinit fsl_pci_init(void)
 {
+        int ret;
         struct device_node *node;
         struct pci_controller *hose;
         dma_addr_t max = 0xffffffff;
@@ -855,10 +856,12 @@ void __devinit fsl_pci_init(void)
                         if (!fsl_pci_primary)
                                 fsl_pci_primary = node;
 
-                        fsl_add_bridge(node, fsl_pci_primary == node);
-                        hose = pci_find_hose_for_OF_device(node);
-                        max = min(max, hose->dma_window_base_cur +
-                                        hose->dma_window_size);
+                        ret = fsl_add_bridge(node, fsl_pci_primary == node);
+                        if (ret == 0) {
+                                hose = pci_find_hose_for_OF_device(node);
+                                max = min(max, hose->dma_window_base_cur +
+                                                hose->dma_window_size);
+                        }
                 }
         }