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[05/11] ASoC: rsnd: fixup forever loop bug on SSI

Message ID 87lh6itp2w.wl%kuninori.morimoto.gx@renesas.com (mailing list archive)
State Accepted
Commit 5bf5d8fc7f5a8a1e75413939e4bdb00ebc2d5610
Headers show

Commit Message

Kuninori Morimoto Feb. 18, 2016, 8:16 a.m. UTC 
From: Kuninori Morimoto <kuninori.morimoto.gx@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@renesas.com>
---
 sound/soc/sh/rcar/ssi.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
diff mbox

Patch

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)