git.openwrt.org Git - openwrt/staging/ldir.git/blob

   1 From 458fa1d508de3f17e49d974a0158d9aeff273a58 Mon Sep 17 00:00:00 2001
   2 From: Kang Chen <void0red@hust.edu.cn>
   3 Date: Wed, 19 Apr 2023 10:07:48 +0800
   4 Subject: [PATCH 18/42] thermal/drivers/mediatek: Use devm_of_iomap to avoid
   5  resource leak in mtk_thermal_probe
   6
   7 Smatch reports:
   8 1. mtk_thermal_probe() warn: 'apmixed_base' from of_iomap() not released.
   9 2. mtk_thermal_probe() warn: 'auxadc_base' from of_iomap() not released.
  10
  11 The original code forgets to release iomap resource when handling errors,
  12 fix it by switch to devm_of_iomap.
  13
  14 Fixes: 89945047b166 ("thermal: mediatek: Add tsensor support for V2 thermal system")
  15 Signed-off-by: Kang Chen <void0red@hust.edu.cn>
  16 Reviewed-by: Dongliang Mu <dzm91@hust.edu.cn>
  17 Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
  18 Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
  19 Link: https://lore.kernel.org/r/20230419020749.621257-1-void0red@hust.edu.cn
  20 ---
  21  drivers/thermal/mediatek/auxadc_thermal.c | 14 ++++++++++++--
  22  1 file changed, 12 insertions(+), 2 deletions(-)
  23
  24 --- a/drivers/thermal/mediatek/auxadc_thermal.c
  25 +++ b/drivers/thermal/mediatek/auxadc_thermal.c
  26 @@ -1232,7 +1232,12 @@ static int mtk_thermal_probe(struct plat
  27                 return -ENODEV;
  28         }
  29
  30 -       auxadc_base = of_iomap(auxadc, 0);
  31 +       auxadc_base = devm_of_iomap(&pdev->dev, auxadc, 0, NULL);
  32 +       if (IS_ERR(auxadc_base)) {
  33 +               of_node_put(auxadc);
  34 +               return PTR_ERR(auxadc_base);
  35 +       }
  36 +
  37         auxadc_phys_base = of_get_phys_base(auxadc);
  38
  39         of_node_put(auxadc);
  40 @@ -1248,7 +1253,12 @@ static int mtk_thermal_probe(struct plat
  41                 return -ENODEV;
  42         }
  43
  44 -       apmixed_base = of_iomap(apmixedsys, 0);
  45 +       apmixed_base = devm_of_iomap(&pdev->dev, apmixedsys, 0, NULL);
  46 +       if (IS_ERR(apmixed_base)) {
  47 +               of_node_put(apmixedsys);
  48 +               return PTR_ERR(apmixed_base);
  49 +       }
  50 +
  51         apmixed_phys_base = of_get_phys_base(apmixedsys);
  52
  53         of_node_put(apmixedsys);