Re: [PATCH] pinctrl: meson: amlogic-a4: Fix device node reference leak in bank helpers
From: Xianwei Zhao <xianwei.zhao@amlogic.com>
Date: 2026-01-28 02:37:33
Also in:
linux-amlogic, linux-gpio, lkml
Reviewed-by: Xianwei Zhao <xianwei.zhao@amlogic.com> On 2026/1/28 02:23, Felix Gu wrote:
quoted hunk ↗ jump to hunk
[You don't often get email from ustc.gu@gmail.com. Learn why this is important at https://aka.ms/LearnAboutSenderIdentification ] [ EXTERNAL EMAIL ] of_parse_phandle_with_fixed_args() increments the reference count of the returned device node, so it must be explicitly released using of_node_put() after use. Fix the reference leak in aml_bank_pins() and aml_bank_number() by adding the missing of_node_put() calls. Fixes: 6e9be3abb78c ("pinctrl: Add driver support for Amlogic SoCs") Signed-off-by: Felix Gu <redacted> --- drivers/pinctrl/meson/pinctrl-amlogic-a4.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-)diff --git a/drivers/pinctrl/meson/pinctrl-amlogic-a4.c b/drivers/pinctrl/meson/pinctrl-amlogic-a4.c index ded7b218e2ec..40542edd557e 100644 --- a/drivers/pinctrl/meson/pinctrl-amlogic-a4.c +++ b/drivers/pinctrl/meson/pinctrl-amlogic-a4.c@@ -725,8 +725,9 @@ static u32 aml_bank_pins(struct device_node *np) if (of_parse_phandle_with_fixed_args(np, "gpio-ranges", 3, 0, &of_args)) return 0; - else - return of_args.args[2]; + + of_node_put(of_args.np); + return of_args.args[2]; } static int aml_bank_number(struct device_node *np)@@ -736,8 +737,9 @@ static int aml_bank_number(struct device_node *np) if (of_parse_phandle_with_fixed_args(np, "gpio-ranges", 3, 0, &of_args)) return -EINVAL; - else - return of_args.args[1] >> 8; + + of_node_put(of_args.np); + return of_args.args[1] >> 8; } static unsigned int aml_count_pins(struct device_node *np)--- base-commit: 615aad0f61e0c7a898184a394dc895c610100d4f change-id: 20260128-amlogic-0d08ef086c8b Best regards, -- Felix Gu [off-list ref]