ASoC: rsnd: no more SSI restart when unusual situation

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>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 6 insertions, 3 deletions

diff --git a/sound/soc/sh/rcar/ssi.c b/sound/soc/sh/rcar/ssi.c
index fea4aa53918a..060d3d205250 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);