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The function then overwrites the local node pointer with the stdout-path lookup result, or exits on error, without dropping the /chosen reference. Keep the /chosen node in a separate variable and put it after the stdout-path value has been used for the lookup. The successful stdout node lookup remains referenced by the cached stdout_path pointer. Fixes: 3bb37c8e6e6a ("bus: ti-sysc: Handle stdout-path for debug console") Signed-off-by: Yuho Choi --- drivers/bus/ti-sysc.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/drivers/bus/ti-sysc.c b/drivers/bus/ti-sysc.c index a5b9507de37c..e118b900c9ac 100644 --- a/drivers/bus/ti-sysc.c +++ b/drivers/bus/ti-sysc.c @@ -682,6 +682,7 @@ static struct device_node *stdout_path; static void sysc_init_stdout_path(struct sysc *ddata) { + struct device_node *chosen; struct device_node *np = NULL; const char *uart; @@ -691,15 +692,18 @@ static void sysc_init_stdout_path(struct sysc *ddata) if (stdout_path) return; - np = of_find_node_by_path("/chosen"); - if (!np) + chosen = of_find_node_by_path("/chosen"); + if (!chosen) goto err; - uart = of_get_property(np, "stdout-path", NULL); - if (!uart) + uart = of_get_property(chosen, "stdout-path", NULL); + if (!uart) { + of_node_put(chosen); goto err; + } np = of_find_node_by_path(uart); + of_node_put(chosen); if (!np) goto err; -- 2.43.0