From: Miaoqian Lin <linmq006@gmail.com>
To: Arnd Bergmann <arnd@arndb.de>,
Michael Ellerman <mpe@ellerman.id.au>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
Cc: linmq006@gmail.com
Subject: [PATCH] powerpc/cell/axon_msi: Fix refcount leak in setup_msi_msg_address
Date: Sun, 5 Jun 2022 10:51:29 +0400 [thread overview]
Message-ID: <20220605065129.63906-1-linmq006@gmail.com> (raw)
of_get_next_parent() returns a node pointer with refcount incremented,
we should use of_node_put() on it when not need anymore.
Add missing of_node_put() in the error path to avoid refcount leak.
Fixes: ce21b3c9648a ("[CELL] add support for MSI on Axon-based Cell systems")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
---
arch/powerpc/platforms/cell/axon_msi.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/platforms/cell/axon_msi.c b/arch/powerpc/platforms/cell/axon_msi.c
index f3291e957a19..5b012abca773 100644
--- a/arch/powerpc/platforms/cell/axon_msi.c
+++ b/arch/powerpc/platforms/cell/axon_msi.c
@@ -223,6 +223,7 @@ static int setup_msi_msg_address(struct pci_dev *dev, struct msi_msg *msg)
if (!prop) {
dev_dbg(&dev->dev,
"axon_msi: no msi-address-(32|64) properties found\n");
+ of_node_put(dn);
return -ENOENT;
}
--
2.25.1
next reply other threads:[~2022-06-05 6:52 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-05 6:51 Miaoqian Lin [this message]
2022-08-02 11:02 ` [PATCH] powerpc/cell/axon_msi: Fix refcount leak in setup_msi_msg_address Michael Ellerman
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