ASoC: rsnd: no more SRC restart when unusual situation

It will be SRC 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, 7 insertions, 3 deletions

diff --git a/sound/soc/sh/rcar/src.c b/sound/soc/sh/rcar/src.c
index 6ce8985757c1..cc93f32b0de0 100644
--- a/sound/soc/sh/rcar/src.c
+++ b/sound/soc/sh/rcar/src.c
@@ -620,13 +620,17 @@ static irqreturn_t rsnd_src_interrupt_gen2(int irq, void *data)
 
         if (rsnd_src_error_record_gen2(mod)) {
                 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
+                struct rsnd_src *src = rsnd_mod_to_src(mod);
                 struct device *dev = rsnd_priv_to_dev(priv);
 
-                _rsnd_src_stop_gen2(mod);
-                _rsnd_src_start_gen2(mod);
-
                 dev_dbg(dev, "%s[%d] restart\n",
                         rsnd_mod_name(mod), rsnd_mod_id(mod));
+
+                _rsnd_src_stop_gen2(mod);
+                if (src->err < 1024)
+                        _rsnd_src_start_gen2(mod);
+                else
+                        dev_warn(dev, "no more SRC restart\n");
         }
 
         return IRQ_HANDLED;