Re: [PATCH] PCI: dwc: change to use devm_clk_get_enabled() helpers
From: Bjorn Helgaas
Date: Fri Aug 23 2024 - 17:56:39 EST
This is spear13xx-specific, not a generic dwc change, so the subject
should be:
PCI: spear13xx: <Capitalized> ...
On Thu, Aug 22, 2024 at 07:25:16PM -0600, Wu Bo wrote:
Include the fact that you're using devm_clk_get_enabled() here so the
commit log is complete even without the subject line.
> Make the code cleaner and avoid call clk_disable_unprepare()
>
> Signed-off-by: Wu Bo <bo.wu@xxxxxxxx>
> ---
> drivers/pci/controller/dwc/pcie-spear13xx.c | 18 ++----------------
> 1 file changed, 2 insertions(+), 16 deletions(-)
>
> diff --git a/drivers/pci/controller/dwc/pcie-spear13xx.c b/drivers/pci/controller/dwc/pcie-spear13xx.c
> index 201dced209f0..37d9ccffc2e6 100644
> --- a/drivers/pci/controller/dwc/pcie-spear13xx.c
> +++ b/drivers/pci/controller/dwc/pcie-spear13xx.c
> @@ -221,32 +221,18 @@ static int spear13xx_pcie_probe(struct platform_device *pdev)
>
> phy_init(spear13xx_pcie->phy);
>
> - spear13xx_pcie->clk = devm_clk_get(dev, NULL);
> + spear13xx_pcie->clk = devm_clk_get_enabled(dev, NULL);
> if (IS_ERR(spear13xx_pcie->clk)) {
> dev_err(dev, "couldn't get clk for pcie\n");
> return PTR_ERR(spear13xx_pcie->clk);
> }
> - ret = clk_prepare_enable(spear13xx_pcie->clk);
> - if (ret) {
> - dev_err(dev, "couldn't enable clk for pcie\n");
> - return ret;
> - }
>
> if (of_property_read_bool(np, "st,pcie-is-gen1"))
> pci->link_gen = 1;
>
> platform_set_drvdata(pdev, spear13xx_pcie);
>
> - ret = spear13xx_add_pcie_port(spear13xx_pcie, pdev);
> - if (ret < 0)
> - goto fail_clk;
> -
> - return 0;
> -
> -fail_clk:
> - clk_disable_unprepare(spear13xx_pcie->clk);
> -
> - return ret;
> + return spear13xx_add_pcie_port(spear13xx_pcie, pdev);
Nice cleanup, I like it.
> }
>
> static const struct of_device_id spear13xx_pcie_of_match[] = {
> --
> 2.25.1
>