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[07/13] ASoC: rsnd: no more SSI restart when unusual situation

Message ID 87sid9r8oz.wl%kuninori.morimoto.gx@renesas.com (mailing list archive)
State Accepted
Commit 044930b4a69a6c0645b6199bec4f870e0b6e77f4
Headers show

Commit Message

Kuninori Morimoto March 13, 2015, 1:24 a.m. UTC 
From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

It will be SSI interrupt endless loop f unusual situation happen.
This patch adds restart limit for it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
 sound/soc/sh/rcar/ssi.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)
diff mbox

Patch

diff --git a/sound/soc/sh/rcar/ssi.c b/sound/soc/sh/rcar/ssi.c
index fea4aa5..060d3d2 100644
--- a/sound/soc/sh/rcar/ssi.c
+++ b/sound/soc/sh/rcar/ssi.c
@@ -416,11 +416,14 @@  static irqreturn_t rsnd_ssi_interrupt(int irq, void *data)
 		/*
 		 * restart SSI
 		 */
-		rsnd_ssi_stop(mod, priv);
-		rsnd_ssi_start(mod, priv);
-
 		dev_dbg(dev, "%s[%d] restart\n",
 			rsnd_mod_name(mod), rsnd_mod_id(mod));
+
+		rsnd_ssi_stop(mod, priv);
+		if (ssi->err < 1024)
+			rsnd_ssi_start(mod, priv);
+		else
+			dev_warn(dev, "no more SSI restart\n");
 	}
 
 	rsnd_ssi_record_error(ssi, status);