linux/drivers/base/init.c
Wesley W. Terpstra 319b11ef57 base: fix order of OF initialization
This fixes: [    0.010000] cpu cpu0: Error -2 creating of_node link
... which you get for every CPU on all architectures that use
CONFIG_GENERIC_CPU_DEVICES.

In that case, driver_init() calls cpu_dev_init() before calling
of_core_init(). Then we get the callchain:

  cpu_dev_init()
    -> cpu_dev_register_generic()
    -> register_cpu(cpu, i)
    -> device_register(&cpu->dev)
    -> device_add(dev)
    -> device_add_class_symlinks(dev)

... in device_add_class_symlinks, we we dev->of_node, and call
sysfs_create_link(), which fails because we haven't called
of_core_init() to register the sysfs devicetree directory yet.

Signed-off-by: Wesley W. Terpstra <wesley@sifive.com>
[hch: updated the changelog based on review feedback]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Frank Rowand <frowand.list@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-07 17:54:29 +02:00

39 lines
768 B
C

// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2002-3 Patrick Mochel
* Copyright (c) 2002-3 Open Source Development Labs
*/
#include <linux/device.h>
#include <linux/init.h>
#include <linux/memory.h>
#include <linux/of.h>
#include "base.h"
/**
* driver_init - initialize driver model.
*
* Call the driver model init functions to initialize their
* subsystems. Called early from init/main.c.
*/
void __init driver_init(void)
{
/* These are the core pieces */
devtmpfs_init();
devices_init();
buses_init();
classes_init();
firmware_init();
hypervisor_init();
/* These are also core pieces, but must come after the
* core core pieces.
*/
of_core_init();
platform_bus_init();
cpu_dev_init();
memory_dev_init();
container_dev_init();
}