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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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c39cf60feb
Up to now mc13xxx_common_exit() returns zero unconditionally. Make it return void instead which makes it easier to see in the callers that there is no error to handle. Also the return value of i2c and spi remove callbacks is ignored anyway. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Lee Jones <lee.jones@linaro.org> Link: https://lore.kernel.org/r/20211012153945.2651412-9-u.kleine-koenig@pengutronix.de
118 lines
2.6 KiB
C
118 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright 2009-2010 Creative Product Design
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* Marc Reilly marc@cpdesign.com.au
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*/
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/mfd/core.h>
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#include <linux/mfd/mc13xxx.h>
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#include <linux/of.h>
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#include <linux/of_device.h>
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#include <linux/of_gpio.h>
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#include <linux/i2c.h>
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#include <linux/err.h>
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#include "mc13xxx.h"
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static const struct i2c_device_id mc13xxx_i2c_device_id[] = {
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{
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.name = "mc13892",
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.driver_data = (kernel_ulong_t)&mc13xxx_variant_mc13892,
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}, {
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.name = "mc34708",
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.driver_data = (kernel_ulong_t)&mc13xxx_variant_mc34708,
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}, {
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/* sentinel */
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}
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};
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MODULE_DEVICE_TABLE(i2c, mc13xxx_i2c_device_id);
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static const struct of_device_id mc13xxx_dt_ids[] = {
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{
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.compatible = "fsl,mc13892",
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.data = &mc13xxx_variant_mc13892,
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}, {
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.compatible = "fsl,mc34708",
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.data = &mc13xxx_variant_mc34708,
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}, {
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/* sentinel */
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}
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};
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MODULE_DEVICE_TABLE(of, mc13xxx_dt_ids);
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static const struct regmap_config mc13xxx_regmap_i2c_config = {
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.reg_bits = 8,
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.val_bits = 24,
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.max_register = MC13XXX_NUMREGS,
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.cache_type = REGCACHE_NONE,
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};
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static int mc13xxx_i2c_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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struct mc13xxx *mc13xxx;
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int ret;
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mc13xxx = devm_kzalloc(&client->dev, sizeof(*mc13xxx), GFP_KERNEL);
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if (!mc13xxx)
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return -ENOMEM;
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dev_set_drvdata(&client->dev, mc13xxx);
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mc13xxx->irq = client->irq;
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mc13xxx->regmap = devm_regmap_init_i2c(client,
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&mc13xxx_regmap_i2c_config);
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if (IS_ERR(mc13xxx->regmap)) {
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ret = PTR_ERR(mc13xxx->regmap);
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dev_err(&client->dev, "Failed to initialize regmap: %d\n", ret);
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return ret;
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}
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if (client->dev.of_node) {
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const struct of_device_id *of_id =
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of_match_device(mc13xxx_dt_ids, &client->dev);
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mc13xxx->variant = of_id->data;
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} else {
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mc13xxx->variant = (void *)id->driver_data;
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}
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return mc13xxx_common_init(&client->dev);
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}
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static int mc13xxx_i2c_remove(struct i2c_client *client)
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{
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mc13xxx_common_exit(&client->dev);
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return 0;
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}
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static struct i2c_driver mc13xxx_i2c_driver = {
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.id_table = mc13xxx_i2c_device_id,
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.driver = {
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.name = "mc13xxx",
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.of_match_table = mc13xxx_dt_ids,
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},
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.probe = mc13xxx_i2c_probe,
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.remove = mc13xxx_i2c_remove,
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};
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static int __init mc13xxx_i2c_init(void)
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{
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return i2c_add_driver(&mc13xxx_i2c_driver);
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}
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subsys_initcall(mc13xxx_i2c_init);
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static void __exit mc13xxx_i2c_exit(void)
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{
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i2c_del_driver(&mc13xxx_i2c_driver);
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}
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module_exit(mc13xxx_i2c_exit);
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MODULE_DESCRIPTION("i2c driver for Freescale MC13XXX PMIC");
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MODULE_AUTHOR("Marc Reilly <marc@cpdesign.com.au");
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MODULE_LICENSE("GPL v2");
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