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clk: mediatek: fix of_iomap memory leak

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Smatch reports:
drivers/clk/mediatek/clk-mtk.c:583 mtk_clk_simple_probe() warn:
    'base' from of_iomap() not released on lines: 496.

This problem was also found in linux-next. In mtk_clk_simple_probe(),
base is not released when handling errors
if clk_data is not existed, which may cause a leak.
So free_base should be added here to release base.

Fixes: c58cd0e40f ("clk: mediatek: Add mtk_clk_simple_probe() to simplify clock providers")
Signed-off-by: Bosi Zhang <u201911157@hust.edu.cn>
Reviewed-by: Dongliang Mu <dzm91@hust.edu.cn>
Link: https://lore.kernel.org/r/20230422084331.47198-1-u201911157@hust.edu.cn
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This commit is contained in:
Bosi Zhang
2023-04-22 08:43:31 +00:00
committed by Stephen Boyd
parent 18eb864f1a
commit 3db7285e04
1 changed files with 5 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/clk/mediatek/clk-mtk.c
View File

@@ -500,8 +500,10 @@ static int __mtk_clk_simple_probe(struct platform_device *pdev,
num_clks += mcd->num_mux_clks + mcd->num_divider_clks;
clk_data = mtk_alloc_clk_data(num_clks);
if (!clk_data)
return -ENOMEM;
if (!clk_data) {
r = -ENOMEM;
goto free_base;
}
if (mcd->fixed_clks) {
r = mtk_clk_register_fixed_clks(mcd->fixed_clks,
@@ -599,6 +601,7 @@ static int __mtk_clk_simple_probe(struct platform_device *pdev,
mcd->num_fixed_clks, clk_data);
free_data:
mtk_free_clk_data(clk_data);
free_base:
if (mcd->shared_io && base)
iounmap(base);
return r;