ARM: Kirkwood: Support basic hotplug for PCI-E

Unconditionally register the PCI-E bus, even if the link is currently
down. When the link is brought up the bus can be scanned through
/sys/bus/pci/rescan or otherwise. Since the HW has no interrupt for
link up, userspace will have to take care of the timing.

An earlier version of this was contingent on CONFIG_HOTPLUG, but
that is being removed from the kernel.

This also fixes printing the link up/down message to be displayed
on one line (structured logging broke this?)

Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

1 files changed, 3 insertions, 7 deletions

diff --git a/arch/arm/mach-kirkwood/pcie.c b/arch/arm/mach-kirkwood/pcie.c
index a1c3ab6fc809..d96ad4c09972 100644
--- a/arch/arm/mach-kirkwood/pcie.c
+++ b/arch/arm/mach-kirkwood/pcie.c
@@ -247,13 +247,9 @@ static struct hw_pci kirkwood_pci __initdata = {
 
 static void __init add_pcie_port(int index, void __iomem *base)
 {
-        pr_info("Kirkwood PCIe port %d: ", index);
-
-        if (orion_pcie_link_up(base)) {
-                pr_info("link up\n");
-                pcie_port_map[num_pcie_ports++] = index;
-        } else
-                pr_info("link down, ignoring\n");
+        pcie_port_map[num_pcie_ports++] = index;
+        pr_info("Kirkwood PCIe port %d: link %s\n", index,
+                orion_pcie_link_up(base) ? "up" : "down");
 }
 
 void __init kirkwood_pcie_init(unsigned int portmask)