[PATCH] ASoC: soc-dai.c: add missing flag check at snd_soc_pcm_dai_probe()

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



dai->probed is used at snd_soc_pcm_dai_probe/remove(),
and used to call real remove() function only when it was probed.

	int snd_soc_pcm_dai_probe(...)
	{
		...
		for_each_rtd_dais(rtd, i, dai) {
			...

			if (dai->driver->probe) {
(A)				int ret = dai->driver->probe(dai);

				if (ret < 0)
					return soc_dai_ret(dai, ret);
			}

=>			dai->probed = 1;
		}
		...
	}

	int snd_soc_pcm_dai_remove(...)
	{
		...
		for_each_rtd_dais(rtd, i, dai) {
			...
=>			if (dai->probed &&
			    ...) {
				...
			}

=>			dai->probed = 0;
		}
		...
	}

But on probe() case, we need to check dai->probed before calling
real probe() function at (A), otherwise real probe() might be called
multi times (but real remove() will be called only once).
This patch checks it at probe().

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>
---
 sound/soc/soc-dai.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sound/soc/soc-dai.c b/sound/soc/soc-dai.c
index 0119afbd01fc..02dd64dea179 100644
--- a/sound/soc/soc-dai.c
+++ b/sound/soc/soc-dai.c
@@ -542,6 +542,9 @@ int snd_soc_pcm_dai_probe(struct snd_soc_pcm_runtime *rtd, int order)
 		if (dai->driver->probe_order != order)
 			continue;
 
+		if (dai->probed)
+			continue;
+
 		if (dai->driver->probe) {
 			int ret = dai->driver->probe(dai);
 
-- 
2.25.1




[Index of Archives]     [ALSA User]     [Linux Audio Users]     [Pulse Audio]     [Kernel Archive]     [Asterisk PBX]     [Photo Sharing]     [Linux Sound]     [Video 4 Linux]     [Gimp]     [Yosemite News]

  Powered by Linux