ASoC: dapm: Only mark pin widgets as dirty if we actually change state

Small optimisation for noop state updates.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index 86569044f662..c9b088dab1cf 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -1927,10 +1927,12 @@ static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm,
                 return -EINVAL;
         }
 
+        if (w->connected != status)
+                dapm_mark_dirty(w, "pin configuration");
+
         w->connected = status;
         if (status == 0)
                 w->force = 0;
-        dapm_mark_dirty(w, "pin configuration");
 
         return 0;
 }