[alsa-devel] [PATCH 2.6.37 1/2] ASoC: Fix dapm_seq_compare() for multi-component

[Mark Brown]

Ensure that we keep all widget powerups in DAPM sequence by making
the CODEC the last thing we compare on rather than the first thing.
Also fix the fact that we're currently comparing the widget pointers
rather than the CODEC pointers when we do the substraction so we
won't get stable results.

Signed-off-by: Mark Brown <broonie at opensource.wolfsonmicro.com>
---
 sound/soc/soc-dapm.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index 8352430..bc2ec06 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -706,12 +706,12 @@ static int dapm_seq_compare(struct snd_soc_dapm_widget *a,
 			    struct snd_soc_dapm_widget *b,
 			    int sort[])
 {
-	if (a->codec != b->codec)
-		return (unsigned long)a - (unsigned long)b;
 	if (sort[a->id] != sort[b->id])
 		return sort[a->id] - sort[b->id];
 	if (a->reg != b->reg)
 		return a->reg - b->reg;
+	if (a->codec != b->codec)
+		return (unsigned long)a->codec - (unsigned long)b->codec;
 
 	return 0;
 }
-- 
1.7.1