[PATCH] pinctrl: sunxi: fix regulator leak in sunxi_pmx_request() error path

Felix Gu ustc.gu at gmail.com
Mon May 4 07:53:26 PDT 2026


In the error path of sunxi_pmx_request(), the code calls
regulator_put(s_reg->regulator) to release the regulator. However,
s_reg->regulator is only assigned after a successful regulator_enable().
This causes a memory leak: the regulator obtained via regulator_get()
is never properly released when regulator_enable() fails.

Fixes: dc1445584177 ("pinctrl: sunxi: Fix and simplify pin bank regulator handling")
Signed-off-by: Felix Gu <ustc.gu at gmail.com>
---
 drivers/pinctrl/sunxi/pinctrl-sunxi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pinctrl/sunxi/pinctrl-sunxi.c b/drivers/pinctrl/sunxi/pinctrl-sunxi.c
index d3042e0c9712..25489beeb312 100644
--- a/drivers/pinctrl/sunxi/pinctrl-sunxi.c
+++ b/drivers/pinctrl/sunxi/pinctrl-sunxi.c
@@ -925,7 +925,7 @@ static int sunxi_pmx_request(struct pinctrl_dev *pctldev, unsigned offset)
 	return 0;
 
 out:
-	regulator_put(s_reg->regulator);
+	regulator_put(reg);
 
 	return ret;
 }

---
base-commit: b9303e6bff706758c167af686b5315ad00233bf8
change-id: 20260504-sunxi-cda91661c181

Best regards,
-- 
Felix Gu <ustc.gu at gmail.com>




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