[alsa-devel] [PATCH 1/6] ASoC: fsl: Fix of-node refcount unbalance in fsl_ssi_probe_from_dt()

[Takashi Iwai]

The node obtained from of_find_node_by_path() has to be unreferenced
after the use, but we forgot it for the root node.

Fixes: f0fba2ad1b6b ("ASoC: multi-component - ASoC Multi-Component Support")
Cc: Timur Tabi <timur at kernel.org>
Cc: Nicolin Chen <nicoleotsuka at gmail.com>
Cc: Xiubo Li <Xiubo.Lee at gmail.com>
Cc: Fabio Estevam <festevam at gmail.com>
Signed-off-by: Takashi Iwai <tiwai at suse.de>
---

Only compile-tested.  Please review carefully.  Thanks!

 sound/soc/fsl/fsl_ssi.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/sound/soc/fsl/fsl_ssi.c b/sound/soc/fsl/fsl_ssi.c
index 0a648229e643..09b2967befd9 100644
--- a/sound/soc/fsl/fsl_ssi.c
+++ b/sound/soc/fsl/fsl_ssi.c
@@ -1439,8 +1439,10 @@ static int fsl_ssi_probe_from_dt(struct fsl_ssi *ssi)
 	 * different name to register the device.
 	 */
 	if (!ssi->card_name[0] && of_get_property(np, "codec-handle", NULL)) {
-		sprop = of_get_property(of_find_node_by_path("/"),
-					"compatible", NULL);
+		struct device_node *root = of_find_node_by_path("/");
+
+		sprop = of_get_property(root, "compatible", NULL);
+		of_node_put(root);
 		/* Strip "fsl," in the compatible name if applicable */
 		p = strrchr(sprop, ',');
 		if (p)
-- 
2.16.4