From ece7af5f787ee94ef4a8adb5cd9c40d6f475a7ba Mon Sep 17 00:00:00 2001 From: Arvind Yadav Date: Mon, 12 Jun 2017 16:23:31 +0530 Subject: usb: dwc3: exynos: Handle return value of clk_prepare_enable clk_prepare_enable() can fail here and we must check its return value. Reviewed-by: Krzysztof Kozlowski Signed-off-by: Arvind Yadav Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/dwc3-exynos.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) diff --git a/drivers/usb/dwc3/dwc3-exynos.c b/drivers/usb/dwc3/dwc3-exynos.c index 98f74ff66120..e089df72f766 100644 --- a/drivers/usb/dwc3/dwc3-exynos.c +++ b/drivers/usb/dwc3/dwc3-exynos.c @@ -125,12 +125,16 @@ static int dwc3_exynos_probe(struct platform_device *pdev) dev_err(dev, "couldn't get clock\n"); return -EINVAL; } - clk_prepare_enable(exynos->clk); + ret = clk_prepare_enable(exynos->clk); + if (ret) + return ret; exynos->susp_clk = devm_clk_get(dev, "usbdrd30_susp_clk"); if (IS_ERR(exynos->susp_clk)) exynos->susp_clk = NULL; - clk_prepare_enable(exynos->susp_clk); + ret = clk_prepare_enable(exynos->susp_clk); + if (ret) + goto susp_clk_err; if (of_device_is_compatible(node, "samsung,exynos7-dwusb3")) { exynos->axius_clk = devm_clk_get(dev, "usbdrd30_axius_clk"); @@ -139,7 +143,9 @@ static int dwc3_exynos_probe(struct platform_device *pdev) ret = -ENODEV; goto axius_clk_err; } - clk_prepare_enable(exynos->axius_clk); + ret = clk_prepare_enable(exynos->axius_clk); + if (ret) + goto axius_clk_err; } else { exynos->axius_clk = NULL; } @@ -197,6 +203,7 @@ vdd33_err: clk_disable_unprepare(exynos->axius_clk); axius_clk_err: clk_disable_unprepare(exynos->susp_clk); +susp_clk_err: clk_disable_unprepare(exynos->clk); return ret; } -- cgit v1.2.3