[PATCH 5.1 068/405] pinctrl: zte: fix leaked of_node references

[PATCH 5.1 068/405] pinctrl: zte: fix leaked of_node references

[Greg Kroah-Hartman]

[ Upstream commit 02d15f0d80720545f1f4922a1550ea4aaad4e152 ]

The call to of_parse_phandle returns a node pointer with refcount
incremented thus it must be explicitly decremented after the last
usage.

Detected by coccinelle with the following warnings:
./drivers/pinctrl/zte/pinctrl-zx.c:415:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 407, but without a corresponding object release within this function.
./drivers/pinctrl/zte/pinctrl-zx.c:422:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 407, but without a corresponding object release within this function.
./drivers/pinctrl/zte/pinctrl-zx.c:436:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 407, but without a corresponding object release within this function.
./drivers/pinctrl/zte/pinctrl-zx.c:444:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 407, but without a corresponding object release within this function.
./drivers/pinctrl/zte/pinctrl-zx.c:448:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 407, but without a corresponding object release within this function.

Signed-off-by: Wen Yang <wen.yang99@zte.com.cn>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Jun Nie <jun.nie@linaro.org>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: linux-gpio@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/pinctrl/zte/pinctrl-zx.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/pinctrl/zte/pinctrl-zx.c b/drivers/pinctrl/zte/pinctrl-zx.c
index caa44dd2880a8..3cb69309912ba 100644
--- a/drivers/pinctrl/zte/pinctrl-zx.c
+++ b/drivers/pinctrl/zte/pinctrl-zx.c
@@ -411,6 +411,7 @@ int zx_pinctrl_init(struct platform_device *pdev,
 	}
 
 	zpctl->aux_base = of_iomap(np, 0);
+	of_node_put(np);
 	if (!zpctl->aux_base)
 		return -ENOMEM;
 
-- 
2.20.1

[PATCH 5.1 147/405] pinctrl: pistachio: fix leaked of_node references

[Greg Kroah-Hartman]

[ Upstream commit 44a4455ac2c6b0981eace683a2b6eccf47689022 ]

The call to of_get_child_by_name returns a node pointer with refcount
incremented thus it must be explicitly decremented after the last
usage.

Detected by coccinelle with the following warnings:
./drivers/pinctrl/pinctrl-pistachio.c:1422:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 1360, but without a corresponding object release within this function.

Signed-off-by: Wen Yang <wen.yang99@zte.com.cn>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: linux-gpio@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/pinctrl/pinctrl-pistachio.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/pinctrl/pinctrl-pistachio.c b/drivers/pinctrl/pinctrl-pistachio.c
index aa5f949ef219c..5b0678f310e52 100644
--- a/drivers/pinctrl/pinctrl-pistachio.c
+++ b/drivers/pinctrl/pinctrl-pistachio.c
@@ -1367,6 +1367,7 @@ static int pistachio_gpio_register(struct pistachio_pinctrl *pctl)
 		if (!of_find_property(child, "gpio-controller", NULL)) {
 			dev_err(pctl->dev,
 				"No gpio-controller property for bank %u\n", i);
+			of_node_put(child);
 			ret = -ENODEV;
 			goto err;
 		}
@@ -1374,6 +1375,7 @@ static int pistachio_gpio_register(struct pistachio_pinctrl *pctl)
 		irq = irq_of_parse_and_map(child, 0);
 		if (irq < 0) {
 			dev_err(pctl->dev, "No IRQ for bank %u: %d\n", i, irq);
+			of_node_put(child);
 			ret = irq;
 			goto err;
 		}
-- 
2.20.1

[PATCH 5.1 148/405] pinctrl: st: fix leaked of_node references

[Greg Kroah-Hartman]

[ Upstream commit 483d70d73beaecab55882fcd2a357af72674e24c ]

The call to of_get_child_by_name returns a node pointer with refcount
incremented thus it must be explicitly decremented after the last
usage.

Detected by coccinelle with the following warnings:
./drivers/pinctrl/pinctrl-st.c:1188:3-9: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 1175, but without a corresponding object release within this function.
./drivers/pinctrl/pinctrl-st.c:1188:3-9: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 1175, but without a corresponding object release within this function.
./drivers/pinctrl/pinctrl-st.c:1199:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 1175, but without a corresponding object release within this function.
./drivers/pinctrl/pinctrl-st.c:1199:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 1175, but without a corresponding object release within this function.

Signed-off-by: Wen Yang <wen.yang99@zte.com.cn>
Cc: Patrice Chotard <patrice.chotard@st.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: linux-gpio@vger.kernel.org
Cc: linux-kernel@vger.kernel.org (open list)
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/pinctrl/pinctrl-st.c | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/drivers/pinctrl/pinctrl-st.c b/drivers/pinctrl/pinctrl-st.c
index e66af93f2cbf8..195b442a23434 100644
--- a/drivers/pinctrl/pinctrl-st.c
+++ b/drivers/pinctrl/pinctrl-st.c
@@ -1170,7 +1170,7 @@ static int st_pctl_dt_parse_groups(struct device_node *np,
 	struct property *pp;
 	struct st_pinconf *conf;
 	struct device_node *pins;
-	int i = 0, npins = 0, nr_props;
+	int i = 0, npins = 0, nr_props, ret = 0;
 
 	pins = of_get_child_by_name(np, "st,pins");
 	if (!pins)
@@ -1185,7 +1185,8 @@ static int st_pctl_dt_parse_groups(struct device_node *np,
 			npins++;
 		} else {
 			pr_warn("Invalid st,pins in %pOFn node\n", np);
-			return -EINVAL;
+			ret = -EINVAL;
+			goto out_put_node;
 		}
 	}
 
@@ -1195,8 +1196,10 @@ static int st_pctl_dt_parse_groups(struct device_node *np,
 	grp->pin_conf = devm_kcalloc(info->dev,
 					npins, sizeof(*conf), GFP_KERNEL);
 
-	if (!grp->pins || !grp->pin_conf)
-		return -ENOMEM;
+	if (!grp->pins || !grp->pin_conf) {
+		ret = -ENOMEM;
+		goto out_put_node;
+	}
 
 	/* <bank offset mux direction rt_type rt_delay rt_clk> */
 	for_each_property_of_node(pins, pp) {
@@ -1229,9 +1232,11 @@ static int st_pctl_dt_parse_groups(struct device_node *np,
 		}
 		i++;
 	}
+
+out_put_node:
 	of_node_put(pins);
 
-	return 0;
+	return ret;
 }
 
 static int st_pctl_parse_functions(struct device_node *np,
-- 
2.20.1

[PATCH 5.1 149/405] pinctrl: samsung: fix leaked of_node references

[Greg Kroah-Hartman]

[ Upstream commit 44b9f86cd41db6c522effa5aec251d664a52fbc0 ]

The call to of_find_compatible_node returns a node pointer with refcount
incremented thus it must be explicitly decremented after the last
usage.

Detected by coccinelle with the following warnings:
./drivers/pinctrl/samsung/pinctrl-exynos-arm.c:76:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 66, but without a corresponding object release within this function.
./drivers/pinctrl/samsung/pinctrl-exynos-arm.c:82:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 66, but without a corresponding object release within this function.

Signed-off-by: Wen Yang <wen.yang99@zte.com.cn>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Tomasz Figa <tomasz.figa@gmail.com>
Cc: Sylwester Nawrocki <s.nawrocki@samsung.com>
Cc: Kukjin Kim <kgene@kernel.org>
Cc: linux-samsung-soc@vger.kernel.org
Cc: linux-gpio@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/pinctrl/samsung/pinctrl-exynos-arm.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/pinctrl/samsung/pinctrl-exynos-arm.c b/drivers/pinctrl/samsung/pinctrl-exynos-arm.c
index 44c6b753f692a..85ddf49a51885 100644
--- a/drivers/pinctrl/samsung/pinctrl-exynos-arm.c
+++ b/drivers/pinctrl/samsung/pinctrl-exynos-arm.c
@@ -71,6 +71,7 @@ s5pv210_retention_init(struct samsung_pinctrl_drv_data *drvdata,
 	}
 
 	clk_base = of_iomap(np, 0);
+	of_node_put(np);
 	if (!clk_base) {
 		pr_err("%s: failed to map clock registers\n", __func__);
 		return ERR_PTR(-EINVAL);
-- 
2.20.1