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clk: sprd: Hold reference returned by of_get_parent()

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[ Upstream commit 91e6455bf7 ]

We should hold the reference returned by of_get_parent() and use it
to call of_node_put() for refcount balance.

Fixes: f95e8c7923 ("clk: sprd: support to get regmap from parent node")
Signed-off-by: Liang He <windhl@126.com>
Link: https://lore.kernel.org/r/20220704004729.272481-1-windhl@126.com
Reviewed-by: Orson Zhai <orsonzhai@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Liang He 2022-07-04 08:47:29 +08:00 committed by Greg Kroah-Hartman
parent 31fe6af3ba
commit 3f8008df84
1 changed files with 5 additions and 4 deletions
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9
drivers/clk/sprd/common.c
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@ -41,7 +41,7 @@ int sprd_clk_regmap_init(struct platform_device *pdev,
{
void __iomem *base;
struct device *dev = &pdev->dev;
struct device_node *node = dev->of_node;
struct device_node *node = dev->of_node, *np;
struct regmap *regmap;
if (of_find_property(node, "sprd,syscon", NULL)) {
@ -50,9 +50,10 @@ int sprd_clk_regmap_init(struct platform_device *pdev,
pr_err("%s: failed to get syscon regmap\n", __func__);
return PTR_ERR(regmap);
}
} else if (of_device_is_compatible(of_get_parent(dev->of_node),
"syscon")) {
regmap = device_node_to_regmap(of_get_parent(dev->of_node));
} else if (of_device_is_compatible(np = of_get_parent(node), "syscon") ||
(of_node_put(np), 0)) {
regmap = device_node_to_regmap(np);
of_node_put(np);
if (IS_ERR(regmap)) {
dev_err(dev, "failed to get regmap from its parent.\n");
return PTR_ERR(regmap);