From 0cd142b4665ee3133cd80539b5a430be5fd326c6 Mon Sep 17 00:00:00 2001 From: Yi Yang Date: Fri, 2 Dec 2022 09:21:26 +0800 Subject: usb: fotg210-udc: fix potential memory leak in fotg210_udc_probe() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit In fotg210_udc_probe(), if devm_clk_get() or clk_prepare_enable() fails, 'fotg210' will not be freed, which will lead to a memory leak. Fix it by moving kfree() to a proper location. In addition，we can use "return -ENOMEM" instead of "goto err" to simplify the code. Fixes: 718a38d092ec ("fotg210-udc: Handle PCLK") Reviewed-by: Andrzej Pietrasiewicz Reviewed-by: Linus Walleij Signed-off-by: Yi Yang Link: https://lore.kernel.org/r/20221202012126.246953-1-yiyang13@huawei.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/fotg210/fotg210-udc.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) (limited to 'drivers/usb/fotg210/fotg210-udc.c') diff --git a/drivers/usb/fotg210/fotg210-udc.c b/drivers/usb/fotg210/fotg210-udc.c index b9ea6c6d931c..66e1b7ee3346 100644 --- a/drivers/usb/fotg210/fotg210-udc.c +++ b/drivers/usb/fotg210/fotg210-udc.c @@ -1163,12 +1163,10 @@ int fotg210_udc_probe(struct platform_device *pdev) return -ENODEV; } - ret = -ENOMEM; - /* initialize udc */ fotg210 = kzalloc(sizeof(struct fotg210_udc), GFP_KERNEL); if (fotg210 == NULL) - goto err; + return -ENOMEM; fotg210->dev = dev; @@ -1178,7 +1176,7 @@ int fotg210_udc_probe(struct platform_device *pdev) ret = clk_prepare_enable(fotg210->pclk); if (ret) { dev_err(dev, "failed to enable PCLK\n"); - return ret; + goto err; } } else if (PTR_ERR(fotg210->pclk) == -EPROBE_DEFER) { /* @@ -1302,8 +1300,7 @@ err_pclk: if (!IS_ERR(fotg210->pclk)) clk_disable_unprepare(fotg210->pclk); - kfree(fotg210); - err: + kfree(fotg210); return ret; } -- cgit v1.2.3