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Subject[PATCH] thermal: mediatek: Fix some leaks in mtk_thermal_probe
Date
If an error occurs after a successful 'of_iomap()' call, it must be undone
by a corresponding 'iounmap()' call

Fixes: 89945047b166 ("thermal: mediatek: Add tsensor support for V2 thermal system")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
---
drivers/thermal/mtk_thermal.c | 17 ++++++++++++-----
1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/drivers/thermal/mtk_thermal.c b/drivers/thermal/mtk_thermal.c
index ede94eadddda..9d7461a5c2c1 100644
--- a/drivers/thermal/mtk_thermal.c
+++ b/drivers/thermal/mtk_thermal.c
@@ -1035,13 +1035,15 @@ static int mtk_thermal_probe(struct platform_device *pdev)

if (auxadc_phys_base == OF_BAD_ADDR) {
dev_err(&pdev->dev, "Can't get auxadc phys address\n");
- return -EINVAL;
+ ret = -EINVAL;
+ goto err_umap_auxadc;
}

apmixedsys = of_parse_phandle(np, "mediatek,apmixedsys", 0);
if (!apmixedsys) {
dev_err(&pdev->dev, "missing apmixedsys node\n");
- return -ENODEV;
+ ret = -ENODEV;
+ goto err_umap_auxadc;
}

apmixed_base = of_iomap(apmixedsys, 0);
@@ -1051,17 +1053,18 @@ static int mtk_thermal_probe(struct platform_device *pdev)

if (apmixed_phys_base == OF_BAD_ADDR) {
dev_err(&pdev->dev, "Can't get auxadc phys address\n");
- return -EINVAL;
+ ret = -EINVAL;
+ goto err_umap_apmixed;
}

ret = device_reset_optional(&pdev->dev);
if (ret)
- return ret;
+ goto err_umap_apmixed;

ret = clk_prepare_enable(mt->clk_auxadc);
if (ret) {
dev_err(&pdev->dev, "Can't enable auxadc clk: %d\n", ret);
- return ret;
+ goto err_umap_apmixed;
}

ret = clk_prepare_enable(mt->clk_peri_therm);
@@ -1099,6 +1102,10 @@ static int mtk_thermal_probe(struct platform_device *pdev)
clk_disable_unprepare(mt->clk_peri_therm);
err_disable_clk_auxadc:
clk_disable_unprepare(mt->clk_auxadc);
+err_umap_apmixed:
+ iounmap(apmixed_base);
+err_umap_auxadc:
+ iounmap(auxadc_base);

return ret;
}
--
2.17.1
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