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reset: k210: fix OF node leak in probe() error path

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BugLink: https://bugs.launchpad.net/bugs/2089340

[ Upstream commit b14e40f5dc7cd0dd7e958010e6ca9ad32ff2ddad ]

Driver is leaking OF node reference on memory allocation failure.
Acquire the OF node reference after memory allocation to fix this and
keep it simple.

Fixes: 5a2308da9f ("riscv: Add Canaan Kendryte K210 reset controller")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Link: https://lore.kernel.org/r/20240825-reset-cleanup-scoped-v1-2-03f6d834f8c0@linaro.org
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Portia Stephens <portia.stephens@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
This commit is contained in:
Krzysztof Kozlowski
2024-08-25 16:14:25 +02:00
committed by Mehmet Basaran
parent a2bfb8a1a1
commit 0b2e40d3da
1 changed files with 2 additions and 1 deletions
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drivers/reset/reset-k210.c
+2 -1
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@@ -90,7 +90,7 @@ static const struct reset_control_ops k210_rst_ops = {
static int k210_rst_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct device_node *parent_np = of_get_parent(dev->of_node);
struct device_node *parent_np;
struct k210_rst *ksr;
dev_info(dev, "K210 reset controller\n");
@@ -99,6 +99,7 @@ static int k210_rst_probe(struct platform_device *pdev)
if (!ksr)
return -ENOMEM;
parent_np = of_get_parent(dev->of_node);
ksr->map = syscon_node_to_regmap(parent_np);
of_node_put(parent_np);
if (IS_ERR(ksr->map))