6.6-stable review patch. If anyone has any objections, please let me know.
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From: Dan Carpenter dan.carpenter@linaro.org
[ Upstream commit 06118ae36855b7d3d22688298e74a766ccf0cb7a ]
There is a missing call to of_node_put() if devm_kcalloc() fails. Fix this by changing the code to use cleanup.h magic to drop the refcount.
Fixes: 6b0cd72757c6 ("regulator: max20086: fix invalid memory access") Signed-off-by: Dan Carpenter dan.carpenter@linaro.org Link: https://patch.msgid.link/aDVRLqgJWMxYU03G@stanley.mountain Reviewed-by: Laurent Pinchart laurent.pinchart@ideasonboard.com Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/regulator/max20086-regulator.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/regulator/max20086-regulator.c b/drivers/regulator/max20086-regulator.c index ebfbcadbca529..1cf04d1efb331 100644 --- a/drivers/regulator/max20086-regulator.c +++ b/drivers/regulator/max20086-regulator.c @@ -5,6 +5,7 @@ // Copyright (C) 2022 Laurent Pinchart laurent.pinchart@idesonboard.com // Copyright (C) 2018 Avnet, Inc.
+#include <linux/cleanup.h> #include <linux/err.h> #include <linux/gpio/consumer.h> #include <linux/i2c.h> @@ -133,11 +134,11 @@ static int max20086_regulators_register(struct max20086 *chip) static int max20086_parse_regulators_dt(struct max20086 *chip, bool *boot_on) { struct of_regulator_match *matches; - struct device_node *node; unsigned int i; int ret;
- node = of_get_child_by_name(chip->dev->of_node, "regulators"); + struct device_node *node __free(device_node) = + of_get_child_by_name(chip->dev->of_node, "regulators"); if (!node) { dev_err(chip->dev, "regulators node not found\n"); return -ENODEV; @@ -153,7 +154,6 @@ static int max20086_parse_regulators_dt(struct max20086 *chip, bool *boot_on)
ret = of_regulator_match(chip->dev, node, matches, chip->info->num_outputs); - of_node_put(node); if (ret < 0) { dev_err(chip->dev, "Failed to match regulators\n"); return -EINVAL;