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path: root/sound/soc/codecs/ssm2602-spi.c
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/*
 * SSM2602 SPI audio driver
 *
 * Copyright 2014 Analog Devices Inc.
 *
 * Licensed under the GPL-2.
 */

#include <linux/module.h>
#include <linux/spi/spi.h>
#include <linux/regmap.h>

#include <sound/soc.h>

#include "ssm2602.h"

static int ssm2602_spi_probe(struct spi_device *spi)
{
	return ssm2602_probe(&spi->dev, SSM2602,
		devm_regmap_init_spi(spi, &ssm2602_regmap_config));
}

static int ssm2602_spi_remove(struct spi_device *spi)
{
	snd_soc_unregister_codec(&spi->dev);
	return 0;
}

static const struct of_device_id ssm2602_of_match[] = {
	{ .compatible = "adi,ssm2602", },
	{ }
};
MODULE_DEVICE_TABLE(of, ssm2602_of_match);

static struct spi_driver ssm2602_spi_driver = {
	.driver = {
		.name	= "ssm2602",
		.of_match_table = ssm2602_of_match,
	},
	.probe		= ssm2602_spi_probe,
	.remove		= ssm2602_spi_remove,
};
module_spi_driver(ssm2602_spi_driver);

MODULE_DESCRIPTION("ASoC SSM2602 SPI driver");
MODULE_AUTHOR("Cliff Cai");
MODULE_LICENSE("GPL");
oints to itself (link->root = link). For others, we copy the pointer from the parent (link->root = link->parent->root). Previously we recognized that Root Ports originated PCIe hierarchies, but we treated PCI/PCI-X to PCIe Bridges as being in the middle of the hierarchy, and when we tried to copy the pointer from link->parent->root, there was no parent, and we dereferenced a NULL pointer: BUG: unable to handle kernel NULL pointer dereference at 0000000000000090 IP: [<ffffffff9e424350>] pcie_aspm_init_link_state+0x170/0x820 Recognize that PCI/PCI-X to PCIe Bridges originate PCIe hierarchies just like Root Ports do, so link->root for these devices should also point to itself. Fixes: 51ebfc92b72b ("PCI: Enumerate switches below PCI-to-PCIe bridges") Link: https://bugzilla.kernel.org/show_bug.cgi?id=193411 Link: https://bugzilla.opensuse.org/show_bug.cgi?id=1022181 Tested-by: lists@ssl-mail.com Tested-by: Jayachandran C. <jnair@caviumnetworks.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> CC: stable@vger.kernel.org # v4.2+
Diffstat (limited to 'sound/pci/ctxfi/ctresource.c')