From: Bosi Zhang u201911157@hust.edu.cn
[ Upstream commit 3db7285e044144fd88a356f5b641b9cd4b231a77 ]
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: c58cd0e40ffa ("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 Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/clk/mediatek/clk-mtk.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/clk/mediatek/clk-mtk.c b/drivers/clk/mediatek/clk-mtk.c index fd2214c3242f2..3c50f48e93a7b 100644 --- a/drivers/clk/mediatek/clk-mtk.c +++ b/drivers/clk/mediatek/clk-mtk.c @@ -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;