[PATCH v2 2/2] thermal: sprd: add missing of_node_put for loop iteration
From: Krzysztof Kozlowski <hidden>
Date: 2021-06-14 19:22:40
Also in:
linux-pm, lkml
Subsystem:
the rest, thermal · Maintainers:
Linus Torvalds, Rafael J. Wysocki, Daniel Lezcano
Early exits from for_each_available_child_of_node() should decrement the
node reference counter. Reported by Coccinelle:
drivers/thermal/sprd_thermal.c:387:1-23: WARNING:
Function "for_each_child_of_node" should have of_node_put() before goto around lines 391.
Signed-off-by: Krzysztof Kozlowski <redacted>
Acked-by: Chunyan Zhang <zhang.lyra@gmail.com>
---
Changes since v1:
1. Add of_put label as suggested by Daniel.
---
drivers/thermal/sprd_thermal.c | 15 +++++++++------
1 file changed, 9 insertions(+), 6 deletions(-)
diff --git a/drivers/thermal/sprd_thermal.c b/drivers/thermal/sprd_thermal.c
index 3682edb2f466..76a2caa9c265 100644
--- a/drivers/thermal/sprd_thermal.c
+++ b/drivers/thermal/sprd_thermal.c@@ -388,7 +388,7 @@ static int sprd_thm_probe(struct platform_device *pdev) sen = devm_kzalloc(&pdev->dev, sizeof(*sen), GFP_KERNEL); if (!sen) { ret = -ENOMEM; - goto disable_clk; + goto of_put; } sen->data = thm;
@@ -397,13 +397,13 @@ static int sprd_thm_probe(struct platform_device *pdev) ret = of_property_read_u32(sen_child, "reg", &sen->id); if (ret) { dev_err(&pdev->dev, "get sensor reg failed"); - goto disable_clk; + goto of_put; } ret = sprd_thm_sensor_calibration(sen_child, thm, sen); if (ret) { dev_err(&pdev->dev, "efuse cal analysis failed"); - goto disable_clk; + goto of_put; } sprd_thm_sensor_init(thm, sen);
@@ -416,19 +416,20 @@ static int sprd_thm_probe(struct platform_device *pdev) dev_err(&pdev->dev, "register thermal zone failed %d\n", sen->id); ret = PTR_ERR(sen->tzd); - goto disable_clk; + goto of_put; } thm->sensor[sen->id] = sen; } + /* sen_child set to NULL at this point */ ret = sprd_thm_set_ready(thm); if (ret) - goto disable_clk; + goto of_put; ret = sprd_thm_wait_temp_ready(thm); if (ret) - goto disable_clk; + goto of_put; for (i = 0; i < thm->nr_sensors; i++) sprd_thm_toggle_sensor(thm->sensor[i], true);
@@ -436,6 +437,8 @@ static int sprd_thm_probe(struct platform_device *pdev) platform_set_drvdata(pdev, thm); return 0; +of_put: + of_node_put(sen_child); disable_clk: clk_disable_unprepare(thm->clk); return ret;
--
2.27.0
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