Applied "ASoC: (cosmetic) simplify dpcm_prune_paths()" to the asoc tree

[Mark Brown]

The patch

   ASoC: (cosmetic) simplify dpcm_prune_paths()

has been applied to the asoc tree at

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git 

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

>From 8cce6569e417f557781fe7f3a84667e611c3a160 Mon Sep 17 00:00:00 2001
From: Guennadi Liakhovetski <guennadi.liakhovetski at linux.intel.com>
Date: Thu, 12 Mar 2020 10:52:13 +0100
Subject: [PATCH] ASoC: (cosmetic) simplify dpcm_prune_paths()

Currently dpcm_prune_paths() has up to 4 nested condition and loop
levels, which forces the code to use flags for flow control.
Extracting widget status verification code from dpcm_prune_paths()
into a separate function simplifies the code.

Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski at linux.intel.com>
Link: https://lore.kernel.org/r/20200312095214.15126-2-guennadi.liakhovetski@linux.intel.com
Signed-off-by: Mark Brown <broonie at kernel.org>
---
 sound/soc/soc-pcm.c | 63 +++++++++++++++++++++++----------------------
 1 file changed, 32 insertions(+), 31 deletions(-)

diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
index 733d7e8a0e55..bf4c5dc903ce 100644
--- a/sound/soc/soc-pcm.c
+++ b/sound/soc/soc-pcm.c
@@ -1626,45 +1626,46 @@ void dpcm_path_put(struct snd_soc_dapm_widget_list **list)
 	snd_soc_dapm_dai_free_widgets(list);
 }
 
-static int dpcm_prune_paths(struct snd_soc_pcm_runtime *fe, int stream,
-	struct snd_soc_dapm_widget_list **list_)
+static bool dpcm_be_is_active(struct snd_soc_dpcm *dpcm, int stream,
+			      struct snd_soc_dapm_widget_list *list)
 {
-	struct snd_soc_dpcm *dpcm;
-	struct snd_soc_dapm_widget_list *list = *list_;
 	struct snd_soc_dapm_widget *widget;
 	struct snd_soc_dai *dai;
-	int prune = 0;
-	int do_prune;
+	unsigned int i;
 
-	/* Destroy any old FE <--> BE connections */
-	for_each_dpcm_be(fe, stream, dpcm) {
-		unsigned int i;
+	/* is there a valid CPU DAI widget for this BE */
+	for_each_rtd_cpu_dais(dpcm->be, i, dai) {
+		widget = snd_soc_dai_get_widget(dai, stream);
 
-		/* is there a valid CPU DAI widget for this BE */
-		do_prune = 1;
-		for_each_rtd_cpu_dais(dpcm->be, i, dai) {
-			widget = snd_soc_dai_get_widget(dai, stream);
+		/*
+		 * The BE is pruned only if none of the cpu_dai
+		 * widgets are in the active list.
+		 */
+		if (widget && widget_in_list(list, widget))
+			return true;
+	}
 
-			/*
-			 * The BE is pruned only if none of the cpu_dai
-			 * widgets are in the active list.
-			 */
-			if (widget && widget_in_list(list, widget))
-				do_prune = 0;
-		}
-		if (!do_prune)
-			continue;
+	/* is there a valid CODEC DAI widget for this BE */
+	for_each_rtd_codec_dais(dpcm->be, i, dai) {
+		widget = snd_soc_dai_get_widget(dai, stream);
 
-		/* is there a valid CODEC DAI widget for this BE */
-		do_prune = 1;
-		for_each_rtd_codec_dais(dpcm->be, i, dai) {
-			widget = snd_soc_dai_get_widget(dai, stream);
+		/* prune the BE if it's no longer in our active list */
+		if (widget && widget_in_list(list, widget))
+			return true;
+	}
 
-			/* prune the BE if it's no longer in our active list */
-			if (widget && widget_in_list(list, widget))
-				do_prune = 0;
-		}
-		if (!do_prune)
+	return false;
+}
+
+static int dpcm_prune_paths(struct snd_soc_pcm_runtime *fe, int stream,
+			    struct snd_soc_dapm_widget_list **list_)
+{
+	struct snd_soc_dpcm *dpcm;
+	int prune = 0;
+
+	/* Destroy any old FE <--> BE connections */
+	for_each_dpcm_be(fe, stream, dpcm) {
+		if (dpcm_be_is_active(dpcm, stream, *list_))
 			continue;
 
 		dev_dbg(fe->dev, "ASoC: pruning %s BE %s for %s\n",
-- 
2.20.1