media: exynos4-is: fix leaked of_node references

[ Upstream commit da79bf41a4d170ca93cc8f3881a70d734a071c37 ]

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/media/platform/exynos4-is/fimc-is.c:813:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 807, but without a corresponding object release within this function.
drivers/media/platform/exynos4-is/fimc-is.c:870:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 807, but without a corresponding object release within this function.
drivers/media/platform/exynos4-is/fimc-is.c:885:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 807, but without a corresponding object release within this function.
drivers/media/platform/exynos4-is/media-dev.c:545:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 541, but without a corresponding object release within this function.
drivers/media/platform/exynos4-is/media-dev.c:528:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 499, but without a corresponding object release within this function.
drivers/media/platform/exynos4-is/media-dev.c:534:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 499, but without a corresponding object release within this function.

Signed-off-by: Wen Yang <wen.yang99@zte.com.cn>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/media/platform/exynos4-is/fimc-is.c b/drivers/media/platform/exynos4-is/fimc-is.c
index e043d55133a315aa86fccbfe26f7e0cd114a9c08..b7cc8e651e327619a95781c5ca7d4d23c75e24b2 100644 (file)
--- a/drivers/media/platform/exynos4-is/fimc-is.c
+++ b/drivers/media/platform/exynos4-is/fimc-is.c
@@ -806,6 +806,7 @@ static int fimc_is_probe(struct platform_device *pdev)
                return -ENODEV;
 
        is->pmu_regs = of_iomap(node, 0);
+       of_node_put(node);
        if (!is->pmu_regs)
                return -ENOMEM;
 

diff --git a/drivers/media/platform/exynos4-is/media-dev.c b/drivers/media/platform/exynos4-is/media-dev.c
index 1b83a6ec745fbf87c241ab252744d50976edb308..3cece7cd73e28dfd1e35eda2b373f5ac8846534d 100644 (file)
--- a/drivers/media/platform/exynos4-is/media-dev.c
+++ b/drivers/media/platform/exynos4-is/media-dev.c
@@ -499,6 +499,7 @@ static int fimc_md_register_sensor_entities(struct fimc_md *fmd)
                        continue;
 
                ret = fimc_md_parse_port_node(fmd, port, index);
+               of_node_put(port);
                if (ret < 0) {
                        of_node_put(node);
                        goto cleanup;
@@ -538,6 +539,7 @@ static int __of_get_csis_id(struct device_node *np)
        if (!np)
                return -EINVAL;
        of_property_read_u32(np, "reg", &reg);
+       of_node_put(np);
        return reg - FIMC_INPUT_MIPI_CSI2_0;
 }