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PCI: dw-rockchip: Simplify regulator setup with devm_regulator_get_enable_optional() 

Replace manual get/enable logic with devm_regulator_get_enable_optional()
to reduce boilerplate and improve error handling. This devm helper ensures
the regulator is enabled during probe and automatically disabled when the
platform device is freed.

Also drop the redundant 'rockchip_pcie::vpcie3v3' pointer.

Signed-off-by: Anand Moon <linux.amoon@gmail.com>
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Link: https://patch.msgid.link/20250905112736.6401-1-linux.amoon@gmail.com
This commit is contained in:
Anand Moon 2025-09-05 16:57:25 +05:30 committed by Manivannan Sadhasivam
parent 3a86608788
commit c930b10f17
1 changed files with 6 additions and 17 deletions
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19
drivers/pci/controller/dwc/pcie-dw-rockchip.c
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@ -82,7 +82,6 @@ struct rockchip_pcie {
unsigned int clk_cnt;
struct reset_control *rst;
struct gpio_desc *rst_gpio;
struct regulator *vpcie3v3;
struct irq_domain *irq_domain;
const struct rockchip_pcie_of_data *data;
};
@ -652,22 +651,15 @@ static int rockchip_pcie_probe(struct platform_device *pdev)
return ret;
/* DON'T MOVE ME: must be enable before PHY init */
rockchip->vpcie3v3 = devm_regulator_get_optional(dev, "vpcie3v3");
if (IS_ERR(rockchip->vpcie3v3)) {
if (PTR_ERR(rockchip->vpcie3v3) != -ENODEV)
return dev_err_probe(dev, PTR_ERR(rockchip->vpcie3v3),
"failed to get vpcie3v3 regulator\n");
rockchip->vpcie3v3 = NULL;
} else {
ret = regulator_enable(rockchip->vpcie3v3);
if (ret)
ret = devm_regulator_get_enable_optional(dev, "vpcie3v3");
if (ret < 0 && ret != -ENODEV)
return dev_err_probe(dev, ret,
"failed to enable vpcie3v3 regulator\n");
}
ret = rockchip_pcie_phy_init(rockchip);
if (ret)
goto disable_regulator;
return dev_err_probe(dev, ret,
"failed to initialize the phy\n");
ret = reset_control_deassert(rockchip->rst);
if (ret)
@ -700,9 +692,6 @@ static int rockchip_pcie_probe(struct platform_device *pdev)
clk_bulk_disable_unprepare(rockchip->clk_cnt, rockchip->clks);
deinit_phy:
rockchip_pcie_phy_deinit(rockchip);
disable_regulator:
if (rockchip->vpcie3v3)
regulator_disable(rockchip->vpcie3v3);
return ret;
}