linux-kernel - [PATCH v2] crypto/nx: add missing call to of_node

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Date:   Fri, 26 Feb 2021 09:23:06 +0800
From:   Yang Li <yang.lee@...ux.alibaba.com>
To:     mpe@...erman.id.au
Cc:     herbert@...dor.apana.org.au, davem@...emloft.net,
        benh@...nel.crashing.org, paulus@...ba.org,
        linux-crypto@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org, Yang Li <yang.lee@...ux.alibaba.com>
Subject: [PATCH v2] crypto/nx: add missing call to of_node_put()

In one of the error paths of the for_each_child_of_node() loop,
add missing call to of_node_put().

Fix the following coccicheck warning:
./drivers/crypto/nx/nx-common-powernv.c:927:1-23: WARNING: Function
"for_each_child_of_node" should have of_node_put() before return around
line 936.

Reported-by: Abaci Robot <abaci@...ux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@...ux.alibaba.com>
---

Changes in v2:
-add braces for if

 drivers/crypto/nx/nx-common-powernv.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/crypto/nx/nx-common-powernv.c b/drivers/crypto/nx/nx-common-powernv.c
index 13c65de..446f611 100644
--- a/drivers/crypto/nx/nx-common-powernv.c
+++ b/drivers/crypto/nx/nx-common-powernv.c
@@ -932,8 +932,10 @@ static int __init nx_powernv_probe_vas(struct device_node *pn)
 			ret = find_nx_device_tree(dn, chip_id, vasid,
 				NX_CT_GZIP, "ibm,p9-nx-gzip", &ct_gzip);
 
-		if (ret)
+		if (ret) {
+			of_node_put(dn);
 			return ret;
+		}
 	}
 
 	if (!ct_842 || !ct_gzip) {
-- 
1.8.3.1