linux-kernel - [PATCH 06/11] powerpc/kexec_file: add missing of_node

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Message-Id: <20230907095521.14053-7-Julia.Lawall@inria.fr>
Date:   Thu,  7 Sep 2023 11:55:16 +0200
From:   Julia Lawall <Julia.Lawall@...ia.fr>
To:     Michael Ellerman <mpe@...erman.id.au>
Cc:     kernel-janitors@...r.kernel.org,
        Nicholas Piggin <npiggin@...il.com>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: [PATCH 06/11] powerpc/kexec_file: add missing of_node_put

for_each_node_with_property performs an of_node_get on each
iteration, so a break out of the loop requires an
of_node_put.

This was done using the Coccinelle semantic patch
iterators/for_each_child.cocci

Signed-off-by: Julia Lawall <Julia.Lawall@...ia.fr>

---
 arch/powerpc/kexec/file_load_64.c |    8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff -u -p a/arch/powerpc/kexec/file_load_64.c b/arch/powerpc/kexec/file_load_64.c
--- a/arch/powerpc/kexec/file_load_64.c
+++ b/arch/powerpc/kexec/file_load_64.c
@@ -1138,11 +1138,15 @@ static int update_pci_dma_nodes(void *fd
 			continue;
 
 		ret = copy_property(fdt, pci_offset, dn, "ibm,dma-window");
-		if (ret < 0)
+		if (ret < 0) {
+			of_node_put(dn);
 			break;
+		}
 		ret = copy_property(fdt, pci_offset, dn, dmapropname);
-		if (ret < 0)
+		if (ret < 0) {
+			of_node_put(dn);
 			break;
+		}
 	}
 
 	return ret;