5.4-stable review patch. If anyone has any objections, please let me know.
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From: Peng Fan peng.fan@nxp.com
[ Upstream commit 7f500f2011c0bbb6e1cacab74b4c99222e60248e ]
of_get_next_child() will increase refcount of the returned node, need use of_node_put() on it when done.
Per current implementation, 'child' will be override by for_each_child_of_node(np, child), so use of_get_child_count to avoid refcount leakage.
Fixes: 17723111e64f ("pinctrl: add pinctrl-mxs support") Signed-off-by: Peng Fan peng.fan@nxp.com Link: https://lore.kernel.org/20240504-pinctrl-cleanup-v2-18-26c5f2dc1181@nxp.com Signed-off-by: Linus Walleij linus.walleij@linaro.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/pinctrl/freescale/pinctrl-mxs.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/pinctrl/freescale/pinctrl-mxs.c b/drivers/pinctrl/freescale/pinctrl-mxs.c index 735cedd0958a2..5b0fcf15f2804 100644 --- a/drivers/pinctrl/freescale/pinctrl-mxs.c +++ b/drivers/pinctrl/freescale/pinctrl-mxs.c @@ -405,8 +405,8 @@ static int mxs_pinctrl_probe_dt(struct platform_device *pdev, int ret; u32 val;
- child = of_get_next_child(np, NULL); - if (!child) { + val = of_get_child_count(np); + if (val == 0) { dev_err(&pdev->dev, "no group is defined\n"); return -ENOENT; }