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Message-Id: <20201228124850.682868257@linuxfoundation.org>
Date: Mon, 28 Dec 2020 13:49:32 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org,
Christophe JAILLET <christophe.jaillet@...adoo.fr>,
Jakub Kicinski <kuba@...nel.org>,
Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.4 088/132] net: allwinner: Fix some resources leak in the error handling path of the probe and in the remove function
From: Christophe JAILLET <christophe.jaillet@...adoo.fr>
[ Upstream commit 322e53d1e2529ae9d501f5e0f20604a79b873aef ]
'irq_of_parse_and_map()' should be balanced by a corresponding
'irq_dispose_mapping()' call. Otherwise, there is some resources leaks.
Add such a call in the error handling path of the probe function and in the
remove function.
Fixes: 492205050d77 ("net: Add EMAC ethernet driver found on Allwinner A10 SoC's")
Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
Link: https://lore.kernel.org/r/20201214202117.146293-1-christophe.jaillet@wanadoo.fr
Signed-off-by: Jakub Kicinski <kuba@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
drivers/net/ethernet/allwinner/sun4i-emac.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/allwinner/sun4i-emac.c b/drivers/net/ethernet/allwinner/sun4i-emac.c
index dde3cd2d47631..10dda58849c6e 100644
--- a/drivers/net/ethernet/allwinner/sun4i-emac.c
+++ b/drivers/net/ethernet/allwinner/sun4i-emac.c
@@ -853,13 +853,13 @@ static int emac_probe(struct platform_device *pdev)
db->clk = devm_clk_get(&pdev->dev, NULL);
if (IS_ERR(db->clk)) {
ret = PTR_ERR(db->clk);
- goto out_iounmap;
+ goto out_dispose_mapping;
}
ret = clk_prepare_enable(db->clk);
if (ret) {
dev_err(&pdev->dev, "Error couldn't enable clock (%d)\n", ret);
- goto out_iounmap;
+ goto out_dispose_mapping;
}
ret = sunxi_sram_claim(&pdev->dev);
@@ -916,6 +916,8 @@ out_release_sram:
sunxi_sram_release(&pdev->dev);
out_clk_disable_unprepare:
clk_disable_unprepare(db->clk);
+out_dispose_mapping:
+ irq_dispose_mapping(ndev->irq);
out_iounmap:
iounmap(db->membase);
out:
@@ -934,6 +936,7 @@ static int emac_remove(struct platform_device *pdev)
unregister_netdev(ndev);
sunxi_sram_release(&pdev->dev);
clk_disable_unprepare(db->clk);
+ irq_dispose_mapping(ndev->irq);
iounmap(db->membase);
free_netdev(ndev);
--
2.27.0
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