[alsa-devel] [PATCH] ASoC: dapm: Only mark pin widgets as dirty if we actually change state

[Mark Brown]

Small optimisation for noop state updates.

Signed-off-by: Mark Brown <broonie at opensource.wolfsonmicro.com>
---
 sound/soc/soc-dapm.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index 2844879..a2a9c11 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -1915,10 +1915,12 @@ 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;
 }
-- 
1.7.9.rc1