mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-29 10:08:59 +00:00
59 lines
1.7 KiB
Diff
59 lines
1.7 KiB
Diff
|
From 7b95ade85ac18eec63e81ac58a482b3e88361ffd Mon Sep 17 00:00:00 2001
|
|||
|
|
From: Yi Yang <yiyang13@huawei.com>
|
|||
|
|
Date: Fri, 2 Dec 2022 09:21:26 +0800
|
|||
|
|
Subject: [PATCH 13/29] 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 <andrzej.p@collabora.com>
|
|||
|
|
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
|
|||
|
|
Signed-off-by: Yi Yang <yiyang13@huawei.com>
|
|||
|
|
Link: https://lore.kernel.org/r/20221202012126.246953-1-yiyang13@huawei.com
|
|||
|
|
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|||
|
|
---
|
|||
|
|
--- a/drivers/usb/fotg210/fotg210-udc.c
|
|||
|
|
+++ b/drivers/usb/fotg210/fotg210-udc.c
|
|||
|
|
@@ -1176,12 +1176,10 @@ int fotg210_udc_probe(struct platform_de
|
|||
|
|
return -ENODEV;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
- ret = -ENOMEM;
|
|||
|
|
-
|
|||
|
|
/* initialize udc */
|
|||
|
|
fotg210 = kzalloc(sizeof(struct fotg210_udc), GFP_KERNEL);
|
|||
|
|
if (fotg210 == NULL)
|
|||
|
|
- goto err;
|
|||
|
|
+ return -ENOMEM;
|
|||
|
|
|
|||
|
|
fotg210->dev = dev;
|
|||
|
|
|
|||
|
|
@@ -1191,7 +1189,7 @@ int fotg210_udc_probe(struct platform_de
|
|||
|
|
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) {
|
|||
|
|
/*
|
|||
|
|
@@ -1317,8 +1315,7 @@ err_pclk:
|
|||
|
|
if (!IS_ERR(fotg210->pclk))
|
|||
|
|
clk_disable_unprepare(fotg210->pclk);
|
|||
|
|
|
|||
|
|
- kfree(fotg210);
|
|||
|
|
-
|
|||
|
|
err:
|
|||
|
|
+ kfree(fotg210);
|
|||
|
|
return ret;
|
|||
|
|
}
|