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authorMatthias Fuchs <matthias.fuchs@esd-electronics.com>2008-09-10 05:55:46 +0000
committerJosh Boyer <jwboyer@linux.vnet.ibm.com>2008-10-02 11:59:01 -0400
commit5a013fc7bb48acefe94011f4b83fef95b381f875 (patch)
treeedcd17541685d13415888c05eb4144ce0d99359a
parentfbcc4bacee30cad4e4a13d05492a9ed0c9c3e8c7 (diff)
powerpc/4xx: Allow 4xx PCI bridge to be disabled via device tree
This patch allows the 4xx (conventional) PCI bridge to be disabled via the device tree. This is needed for 4xx PCI adapter hardware. Use the PCI node's status property to disable the PCI bridge. Signed-off-by: Matthias Fuchs <matthias.fuchs@esd-electronics.com> Acked-by: Stefan Roese <sr@denx.de> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
-rw-r--r--arch/powerpc/sysdev/ppc4xx_pci.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/arch/powerpc/sysdev/ppc4xx_pci.c b/arch/powerpc/sysdev/ppc4xx_pci.c
index 5da8a44ea2f..9f6f73d584d 100644
--- a/arch/powerpc/sysdev/ppc4xx_pci.c
+++ b/arch/powerpc/sysdev/ppc4xx_pci.c
@@ -276,9 +276,16 @@ static void __init ppc4xx_probe_pci_bridge(struct device_node *np)
const int *bus_range;
int primary = 0;
+ /* Check if device is enabled */
+ if (!of_device_is_available(np)) {
+ printk(KERN_INFO "%s: Port disabled via device-tree\n",
+ np->full_name);
+ return;
+ }
+
/* Fetch config space registers address */
if (of_address_to_resource(np, 0, &rsrc_cfg)) {
- printk(KERN_ERR "%s:Can't get PCI config register base !",
+ printk(KERN_ERR "%s: Can't get PCI config register base !",
np->full_name);
return;
}