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7368e9f4e2
An of_node_put(config.of_node) call was immediately used after a pointer check for a devm_regulator_register() call in this function implementation. Thus call such a function only once instead directly before the check. This issue was transformed by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Link: https://patch.msgid.link/f9d7a026-a67a-4164-80f4-578b1fbf71ac@web.de Signed-off-by: Mark Brown <broonie@kernel.org>
72 lines
2.0 KiB
C
72 lines
2.0 KiB
C
// SPDX-License-Identifier: GPL-2.0
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//
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// Renesas USB VBUS output regulator driver
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//
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// Copyright (C) 2024 Renesas Electronics Corporation
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//
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#include <linux/module.h>
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#include <linux/err.h>
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#include <linux/kernel.h>
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#include <linux/of.h>
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#include <linux/platform_device.h>
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#include <linux/regmap.h>
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#include <linux/regulator/driver.h>
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#include <linux/regulator/of_regulator.h>
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static const struct regulator_ops rzg2l_usb_vbus_reg_ops = {
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.enable = regulator_enable_regmap,
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.disable = regulator_disable_regmap,
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.is_enabled = regulator_is_enabled_regmap,
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};
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static const struct regulator_desc rzg2l_usb_vbus_rdesc = {
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.name = "vbus",
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.of_match = of_match_ptr("regulator-vbus"),
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.ops = &rzg2l_usb_vbus_reg_ops,
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.type = REGULATOR_VOLTAGE,
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.owner = THIS_MODULE,
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.enable_reg = 0,
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.enable_mask = BIT(0),
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.enable_is_inverted = true,
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.fixed_uV = 5000000,
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.n_voltages = 1,
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};
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static int rzg2l_usb_vbus_regulator_probe(struct platform_device *pdev)
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{
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struct regulator_config config = { };
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struct device *dev = &pdev->dev;
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struct regulator_dev *rdev;
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config.regmap = dev_get_regmap(dev->parent, NULL);
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if (!config.regmap)
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return dev_err_probe(dev, -ENOENT, "Failed to get regmap\n");
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config.dev = dev;
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config.of_node = of_get_child_by_name(dev->parent->of_node, "regulator-vbus");
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if (!config.of_node)
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return dev_err_probe(dev, -ENODEV, "regulator node not found\n");
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rdev = devm_regulator_register(dev, &rzg2l_usb_vbus_rdesc, &config);
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of_node_put(config.of_node);
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if (IS_ERR(rdev))
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return dev_err_probe(dev, PTR_ERR(rdev),
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"not able to register vbus regulator\n");
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return 0;
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}
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static struct platform_driver rzg2l_usb_vbus_regulator_driver = {
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.probe = rzg2l_usb_vbus_regulator_probe,
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.driver = {
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.name = "rzg2l-usb-vbus-regulator",
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.probe_type = PROBE_PREFER_ASYNCHRONOUS,
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},
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};
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module_platform_driver(rzg2l_usb_vbus_regulator_driver);
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MODULE_AUTHOR("Biju Das <biju.das.jz@bp.renesas.com>");
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MODULE_DESCRIPTION("Renesas RZ/G2L USB Vbus Regulator Driver");
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MODULE_LICENSE("GPL");
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