[PATCH 09/11] ASoC: renesas: rz-ssi: Explain component open return value handling

[phucduc.bui at gmail.com]

From: bui duc phuc <phucduc.bui at gmail.com>

Add a comment explaining why .open() must return 0 on success
to ensure the component is correctly marked as opened and
prevent future changes from reintroducing the issue.

Signed-off-by: bui duc phuc <phucduc.bui at gmail.com>
---
 sound/soc/renesas/rz-ssi.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/sound/soc/renesas/rz-ssi.c b/sound/soc/renesas/rz-ssi.c
index 2e297f721bb6..9f36fe2c16d2 100644
--- a/sound/soc/renesas/rz-ssi.c
+++ b/sound/soc/renesas/rz-ssi.c
@@ -946,6 +946,11 @@ static int rz_ssi_pcm_open_pio(struct snd_soc_component *component,
 	if (ret < 0)
 		return ret;
 
+	/*
+	 * ASoC only marks the component as opened when .open() returns 0.
+	 * Since snd_pcm_hw_constraint_integer() may return 1, explicitly
+	 * return 0 to ensure the component is correctly marked as opened.
+	 */
 	return 0;
 }
 
-- 
2.43.0