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of: device: Fix missing of_node_put() in of_dma_set_restricted_buffer

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[ Upstream commit d17e37c41b7ed38459957a5d2968ba61516fd5c2 ]

We should use of_node_put() for the reference 'node' returned by
of_parse_phandle() which will increase the refcount.

Fixes: fec9b62509 ("of: Add plumbing for restricted DMA pool")
Co-authored-by: Miaoqian Lin <linmq006@gmail.com>
Signed-off-by: Liang He <windhl@126.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220702014449.263772-1-windhl@126.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Liang He
2022-07-02 09:44:49 +08:00
committed by Greg Kroah-Hartman
parent 5325975c19
commit f8585cad6d
1 changed files with 4 additions and 1 deletions
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5
drivers/of/device.c
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@@ -81,9 +81,12 @@ of_dma_set_restricted_buffer(struct device *dev, struct device_node *np)
* restricted-dma-pool region is allowed. * restricted-dma-pool region is allowed.
*/ */
if (of_device_is_compatible(node, "restricted-dma-pool") && if (of_device_is_compatible(node, "restricted-dma-pool") &&
of_device_is_available(node)) of_device_is_available(node)) {
of_node_put(node);
break; break;
} }
of_node_put(node);
}
/* /*
* Attempt to initialize a restricted-dma-pool region if one was found. * Attempt to initialize a restricted-dma-pool region if one was found.