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From b3d0d98179d62f9d55635a600679c4fa362baf8d Mon Sep 17 00:00:00 2001
From: Yang Yingliang <yangyingliang@huawei.com>
Date: Mon, 17 Oct 2022 11:51:54 +0800
Subject: [PATCH 1/3] net: ethernet: mtk_eth_soc: fix possible memory leak in
mtk_probe()
If mtk_wed_add_hw() has been called, mtk_wed_exit() needs be called
in error path or removing module to free the memory allocated in
mtk_wed_add_hw().
Fixes: 804775dfc288 ("net: ethernet: mtk_eth_soc: add support for Wireless Ethernet Dispatch (WED)")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/ethernet/mediatek/mtk_eth_soc.c | 17 ++++++++++++-----
1 file changed, 12 insertions(+), 5 deletions(-)
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -4011,19 +4011,23 @@ static int mtk_probe(struct platform_dev
eth->irq[i] = platform_get_irq(pdev, i);
if (eth->irq[i] < 0) {
dev_err(&pdev->dev, "no IRQ%d resource found\n", i);
- return -ENXIO;
+ err = -ENXIO;
+ goto err_wed_exit;
}
}
for (i = 0; i < ARRAY_SIZE(eth->clks); i++) {
eth->clks[i] = devm_clk_get(eth->dev,
mtk_clks_source_name[i]);
if (IS_ERR(eth->clks[i])) {
- if (PTR_ERR(eth->clks[i]) == -EPROBE_DEFER)
- return -EPROBE_DEFER;
+ if (PTR_ERR(eth->clks[i]) == -EPROBE_DEFER) {
+ err = -EPROBE_DEFER;
+ goto err_wed_exit;
+ }
if (eth->soc->required_clks & BIT(i)) {
dev_err(&pdev->dev, "clock %s not found\n",
mtk_clks_source_name[i]);
- return -EINVAL;
+ err = -EINVAL;
+ goto err_wed_exit;
}
eth->clks[i] = NULL;
}
@@ -4034,7 +4038,7 @@ static int mtk_probe(struct platform_dev
err = mtk_hw_init(eth);
if (err)
- return err;
+ goto err_wed_exit;
eth->hwlro = MTK_HAS_CAPS(eth->soc->caps, MTK_HWLRO);
@@ -4132,6 +4136,8 @@ err_free_dev:
mtk_free_dev(eth);
err_deinit_hw:
mtk_hw_deinit(eth);
+err_wed_exit:
+ mtk_wed_exit();
return err;
}
@@ -4151,6 +4157,7 @@ static int mtk_remove(struct platform_de
phylink_disconnect_phy(mac->phylink);
}
+ mtk_wed_exit();
mtk_hw_deinit(eth);
netif_napi_del(ð->tx_napi);
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