The devm_clk_get_enabled() helpers: - call devm_clk_get() - call clk_prepare_enable() and register what is needed in order to call clk_disable_unprepare() when needed, as a managed resource. This simplifies the code and avoids calls to clk_disable_unprepare(). Signed-off-by: Lei Liu <liulei.rjpt@xxxxxxxx> --- drivers/usb/musb/ux500.c | 18 ++++-------------- 1 file changed, 4 insertions(+), 14 deletions(-) diff --git a/drivers/usb/musb/ux500.c b/drivers/usb/musb/ux500.c index c8d9d2a1d2f0..51ce67678c0c 100644 --- a/drivers/usb/musb/ux500.c +++ b/drivers/usb/musb/ux500.c @@ -246,19 +246,13 @@ static int ux500_probe(struct platform_device *pdev) goto err0; } - clk = devm_clk_get(&pdev->dev, NULL); + clk = clk_prepare_enable(&pdev->dev, NULL); if (IS_ERR(clk)) { dev_err(&pdev->dev, "failed to get clock\n"); ret = PTR_ERR(clk); goto err1; } - ret = clk_prepare_enable(clk); - if (ret) { - dev_err(&pdev->dev, "failed to enable clock\n"); - goto err1; - } - musb->dev.parent = &pdev->dev; musb->dev.dma_mask = &pdev->dev.coherent_dma_mask; musb->dev.coherent_dma_mask = pdev->dev.coherent_dma_mask; @@ -276,26 +270,23 @@ static int ux500_probe(struct platform_device *pdev) ret = platform_device_add_resources(musb, pdev->resource, pdev->num_resources); if (ret) { dev_err(&pdev->dev, "failed to add resources\n"); - goto err2; + goto err1; } ret = platform_device_add_data(musb, pdata, sizeof(*pdata)); if (ret) { dev_err(&pdev->dev, "failed to add platform_data\n"); - goto err2; + goto err1; } ret = platform_device_add(musb); if (ret) { dev_err(&pdev->dev, "failed to register musb device\n"); - goto err2; + goto err1; } return 0; -err2: - clk_disable_unprepare(clk); - err1: platform_device_put(musb); @@ -308,7 +299,6 @@ static void ux500_remove(struct platform_device *pdev) struct ux500_glue *glue = platform_get_drvdata(pdev); platform_device_unregister(glue->musb); - clk_disable_unprepare(glue->clk); } #ifdef CONFIG_PM_SLEEP -- 2.34.1