linux-kernel - [PATCH] powerpc/kexec_file: Add of_node

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Date:   Sun, 17 Oct 2021 21:54:16 -0400
From:   Wan Jiabing <wanjiabing@...o.com>
To:     Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Rob Herring <robh@...nel.org>,
        Thiago Jung Bauermann <bauerman@...ux.ibm.com>,
        Lakshmi Ramasubramanian <nramas@...ux.microsoft.com>,
        Hari Bathini <hbathini@...ux.ibm.com>,
        Wan Jiabing <wanjiabing@...o.com>,
        Sourabh Jain <sourabhjain@...ux.ibm.com>,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Cc:     kael_w@...h.net
Subject: [PATCH] powerpc/kexec_file: Add of_node_put() before goto

Fix following coccicheck warning:
./arch/powerpc/kexec/file_load_64.c:698:1-22: WARNING: Function
for_each_node_by_type should have of_node_put() before goto

Early exits from for_each_node_by_type should decrement the
node reference counter.

Signed-off-by: Wan Jiabing <wanjiabing@...o.com>
---
 arch/powerpc/kexec/file_load_64.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/powerpc/kexec/file_load_64.c b/arch/powerpc/kexec/file_load_64.c
index 5056e175ca2c..b4981b651d9a 100644
--- a/arch/powerpc/kexec/file_load_64.c
+++ b/arch/powerpc/kexec/file_load_64.c
@@ -700,6 +700,7 @@ static int update_usable_mem_fdt(void *fdt, struct crash_mem *usable_mem)
 		if (ret) {
 			pr_err("Failed to set linux,usable-memory property for %s node",
 			       dn->full_name);
+			of_node_put(dn);
 			goto out;
 		}
 	}
-- 
2.20.1