This patch add a check to the PPC4xx PCIe driver to detect if the port
is disabled via the device-tree. This is needed for the AMCC Canyonlands
board which has an option to either select 2 PCIe ports or 1 PCIe port
and one SATA port. The SATA port and the 1st PCIe port pins are multiplexed
so we can't start both drivers.
Signed-off-by: Stefan Roese <[EMAIL PROTECTED]>
---
arch/powerpc/sysdev/ppc4xx_pci.c | 9 +++++++++
1 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/sysdev/ppc4xx_pci.c b/arch/powerpc/sysdev/ppc4xx_pci.c
index b4a54c5..76886cf 100644
--- a/arch/powerpc/sysdev/ppc4xx_pci.c
+++ b/arch/powerpc/sysdev/ppc4xx_pci.c
@@ -1634,6 +1634,15 @@ static void __init ppc4xx_probe_pciex_bridge(struct
device_node *np)
}
port = &ppc4xx_pciex_ports[portno];
port->index = portno;
+
+ /*
+ * Check if device is enabled
+ */
+ if (!of_device_is_available(np)) {
+ printk(KERN_INFO "PCIE%d: Port disabled via device-tree\n",
port->index);
+ return;
+ }
+
port->node = of_node_get(np);
pval = of_get_property(np, "sdr-base", NULL);
if (pval == NULL) {
--
1.5.5.3
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