[alsa-devel] [PATCH 05/11] ASoC: rsnd: fixup forever loop bug on SSI

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>

commit b5b442abd9 ("ASoC: rsnd: add .irq callback")
added .irq support, and it cares both parent SSI and normal SSI.
But it should care only normal SSI. Otherwise SSI might be
forever loop if SSI is used as both parent SSI and normal SSI
(= 2 users), and if under/over run error happen. Because irq disable
do nothing in such case. This patch solve this issue.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>
---
 sound/soc/sh/rcar/ssi.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/sound/soc/sh/rcar/ssi.c b/sound/soc/sh/rcar/ssi.c
index c5c4510..90c3f58 100644
--- a/sound/soc/sh/rcar/ssi.c
+++ b/sound/soc/sh/rcar/ssi.c
@@ -149,13 +149,12 @@ static int rsnd_ssi_irq(struct rsnd_mod *mod,
 			struct rsnd_priv *priv,
 			int enable)
 {
-	struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
 	u32 val = 0;
 
 	if (rsnd_is_gen1(priv))
 		return 0;
 
-	if (ssi->usrcnt != 1)
+	if (rsnd_ssi_is_parent(mod, io))
 		return 0;
 
 	if (enable)
-- 
1.9.1