Commit b73690c8 authored Nov 21, 2012 by Jason Gunthorpe Committed by Jason Cooper Jan 30, 2013

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>

parent 183cadc9

arch/arm/mach-kirkwood/pcie.c

+3 −7

Original line number	Diff line number	Diff line
		@@ -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");
		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)