From 995ada8d5e6b3d5a32ca3e544a564d0623c4f3fa Mon Sep 17 00:00:00 2001 From: Stefan Roese Date: Fri, 6 Jun 2008 00:22:29 +1000 Subject: [PATCH] powerpc/4xx: PCIe driver now detects if a port is disabled via the dev-tree 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 Acked-by: Benjamin Herrenschmidt Signed-off-by: Josh Boyer --- arch/powerpc/sysdev/ppc4xx_pci.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/arch/powerpc/sysdev/ppc4xx_pci.c b/arch/powerpc/sysdev/ppc4xx_pci.c index b4a54c52e880..76886cf0e6dc 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) { -- 2.30.2