From dd6bb9b16f23f9b95b77713c45bd6182336c5b2e Mon Sep 17 00:00:00 2001 From: Ryder Lee Date: Tue, 2 Jan 2018 19:47:18 +0800 Subject: [PATCH 1/2] ASoC: mediatek: fix error handling in mt2701_afe_pcm_dev_probe() Fix unbalanced error handling path which will get incorrect counts if probe failed. The .remove() should be adjusted accordingly. Signed-off-by: Ryder Lee Tested-by: Garlic Tseng Signed-off-by: Mark Brown --- sound/soc/mediatek/mt2701/mt2701-afe-pcm.c | 31 ++++++++++------------ 1 file changed, 14 insertions(+), 17 deletions(-) diff --git a/sound/soc/mediatek/mt2701/mt2701-afe-pcm.c b/sound/soc/mediatek/mt2701/mt2701-afe-pcm.c index 8fda182f849b..a7362d1cda1b 100644 --- a/sound/soc/mediatek/mt2701/mt2701-afe-pcm.c +++ b/sound/soc/mediatek/mt2701/mt2701-afe-pcm.c @@ -1590,12 +1590,16 @@ static int mt2701_afe_pcm_dev_probe(struct platform_device *pdev) } platform_set_drvdata(pdev, afe); - pm_runtime_enable(&pdev->dev); - if (!pm_runtime_enabled(&pdev->dev)) - goto err_pm_disable; - pm_runtime_get_sync(&pdev->dev); - ret = snd_soc_register_platform(&pdev->dev, &mtk_afe_pcm_platform); + pm_runtime_enable(dev); + if (!pm_runtime_enabled(dev)) { + ret = mt2701_afe_runtime_resume(dev); + if (ret) + goto err_pm_disable; + } + pm_runtime_get_sync(dev); + + ret = snd_soc_register_platform(dev, &mtk_afe_pcm_platform); if (ret) { dev_warn(dev, "err_platform\n"); goto err_platform; @@ -1610,35 +1614,28 @@ static int mt2701_afe_pcm_dev_probe(struct platform_device *pdev) goto err_dai_component; } - mt2701_afe_runtime_resume(&pdev->dev); - return 0; err_dai_component: - snd_soc_unregister_component(&pdev->dev); - + snd_soc_unregister_platform(dev); err_platform: - snd_soc_unregister_platform(&pdev->dev); - + pm_runtime_put_sync(dev); err_pm_disable: - pm_runtime_disable(&pdev->dev); + pm_runtime_disable(dev); return ret; } static int mt2701_afe_pcm_dev_remove(struct platform_device *pdev) { - struct mtk_base_afe *afe = platform_get_drvdata(pdev); - + pm_runtime_put_sync(&pdev->dev); pm_runtime_disable(&pdev->dev); if (!pm_runtime_status_suspended(&pdev->dev)) mt2701_afe_runtime_suspend(&pdev->dev); - pm_runtime_put_sync(&pdev->dev); snd_soc_unregister_component(&pdev->dev); snd_soc_unregister_platform(&pdev->dev); - /* disable afe clock */ - mt2701_afe_disable_clock(afe); + return 0; } From 290df4d3ab192821b66857c05346b23056ee9545 Mon Sep 17 00:00:00 2001 From: Charles Keepax Date: Fri, 26 Jan 2018 13:08:43 +0000 Subject: [PATCH 2/2] ASoC: compress: Correct handling of copy callback The soc_compr_copy callback is currently broken. Since the changes to move the compr_ops over to the component the return value is not correctly propagated, always returning zero on success rather than the number of bytes copied. This causes user-space to stall continuously reading as it does not believe it has received any data. Furthermore, the changes to move the compr_ops over to the component iterate through the list of components and will call the copy callback for any that have compressed ops. There isn't currently any consensus on the mechanism to combine the results of multiple copy callbacks. To fix this issue for now halt searching the component list when we locate a copy callback and return the result of that single callback. Additional work should probably be done to look at the other ops, tidy things up, and work out if we want to support multiple components on a single compressed, but this is the only fix required to get things working again. Fixes: 9e7e3738ab0e ("ASoC: snd_soc_component_driver has snd_compr_ops") Signed-off-by: Charles Keepax Signed-off-by: Mark Brown Cc: stable@vger.kernel.org --- sound/soc/soc-compress.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/sound/soc/soc-compress.c b/sound/soc/soc-compress.c index d9b1e6417fb9..1507117d1185 100644 --- a/sound/soc/soc-compress.c +++ b/sound/soc/soc-compress.c @@ -944,7 +944,7 @@ static int soc_compr_copy(struct snd_compr_stream *cstream, struct snd_soc_platform *platform = rtd->platform; struct snd_soc_component *component; struct snd_soc_rtdcom_list *rtdcom; - int ret = 0, __ret; + int ret = 0; mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); @@ -965,10 +965,10 @@ static int soc_compr_copy(struct snd_compr_stream *cstream, !component->driver->compr_ops->copy) continue; - __ret = component->driver->compr_ops->copy(cstream, buf, count); - if (__ret < 0) - ret = __ret; + ret = component->driver->compr_ops->copy(cstream, buf, count); + break; } + err: mutex_unlock(&rtd->pcm_mutex); return ret;