@@ -1073,6 +1073,16 @@ static int fsl_esai_probe(struct platform_device *pdev)
if (ret < 0)
goto err_pm_get_sync;
+ /*
+ * Register platform component before registering cpu dai for there
+ * is not defer probe for platform component in snd_soc_add_pcm_runtime().
+ */
+ ret = imx_pcm_dma_init(pdev, IMX_ESAI_DMABUF_SIZE);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to init imx pcm dma: %d\n", ret);
+ goto err_pm_get_sync;
+ }
+
ret = devm_snd_soc_register_component(&pdev->dev, &fsl_esai_component,
&fsl_esai_dai, 1);
if (ret) {
@@ -1082,12 +1092,6 @@ static int fsl_esai_probe(struct platform_device *pdev)
INIT_WORK(&esai_priv->work, fsl_esai_hw_reset);
- ret = imx_pcm_dma_init(pdev, IMX_ESAI_DMABUF_SIZE);
- if (ret) {
- dev_err(&pdev->dev, "failed to init imx pcm dma: %d\n", ret);
- goto err_pm_get_sync;
- }
-
return ret;
err_pm_get_sync:
There is no defer probe when adding platform component to snd_soc_pcm_runtime(rtd), the code is in snd_soc_add_pcm_runtime() snd_soc_register_card() -> snd_soc_bind_card() -> snd_soc_add_pcm_runtime() -> adding cpu dai -> adding codec dai -> adding platform component. So if the platform component is not ready at that time, then the sound card still registered successfully, but platform component is empty, the sound card can't be used. As there is defer probe checking for cpu dai component, then register platform component before cpu dai to avoid such issue. Fixes: 43d24e76b698 ("ASoC: fsl_esai: Add ESAI CPU DAI driver") Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com> --- sound/soc/fsl/fsl_esai.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-)