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reset: sunxi: fix memory region leak on ioremap failure

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commit 1a8c89f8c1 upstream.

In sunxi_reset_init(), when ioremap() fails, the memory region obtained
via request_mem_region() is not released, leading to a resource leak.

Add an err_mem_region label to properly release the memory region before
freeing the data structure.

Fixes: 8f1ae77f46 ("reset: Add Allwinner SoCs Reset Controller Driver")
Cc: stable@vger.kernel.org
Signed-off-by: Zhao Dongdong <zhaodongdong@kylinos.cn>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Zhao Dongdong
2026-07-24 16:03:45 +02:00
committed by Greg Kroah-Hartman
parent ac6ac3d35b
commit 6dc0c8cd9c
1 changed files with 3 additions and 1 deletions
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drivers/reset/reset-sunxi.c
+3 -1
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@@ -44,7 +44,7 @@ static int sunxi_reset_init(struct device_node *np)
data->membase = ioremap(res.start, size);
if (!data->membase) {
ret = -ENOMEM;
goto err_alloc;
goto err_mem_region;
}
spin_lock_init(&data->lock);
@@ -57,6 +57,8 @@ static int sunxi_reset_init(struct device_node *np)
return reset_controller_register(&data->rcdev);
err_mem_region:
release_mem_region(res.start, size);
err_alloc:
kfree(data);
return ret;