ASoC: amd: ps: fix for acp_lock access in pdm driver

Sending the mutex address(acp_lock) as platform
data during ACP PDM platform driver register sequence,
its creating copy of the platform data.
Referencing this platform data in ACP PDM driver results
incorrect reference to the common lock usage.

Instead of directly passing the lock address as platform
data, retrieve it from parent driver data structure
and use the same lock reference in ACP PDM driver.

Fixes: 45aa83cb9388 ("ASoC: amd: ps: use acp_lock to protect common registers in pdm driver")

Signed-off-by: Vijendar Mukunda <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Mark Brown <[e-mail]>

sound/soc/amd/ps/pci-ps.c

···
 	case ACP63_PDM_DEV_MASK:
 		adata->pdm_dev_index  = 0;
 		acp63_fill_platform_dev_info(&pdevinfo[0], parent, NULL, "acp_ps_pdm_dma",
-					     0, adata->res, 1, &adata->acp_lock,
-					     sizeof(adata->acp_lock));
+					     0, adata->res, 1, NULL, 0);
 		acp63_fill_platform_dev_info(&pdevinfo[1], parent, NULL, "dmic-codec",
 					     0, NULL, 0, NULL, 0);
 		acp63_fill_platform_dev_info(&pdevinfo[2], parent, NULL, "acp_ps_mach",

sound/soc/amd/ps/ps-pdm-dma.c

···
 {
 	struct resource *res;
 	struct pdm_dev_data *adata;
+	struct acp63_dev_data *acp_data;
+	struct device *parent;
 	int status;
 
-	if (!pdev->dev.platform_data) {
-		dev_err(&pdev->dev, "platform_data not retrieved\n");
-		return -ENODEV;
-	}
+	parent = pdev->dev.parent;
+	acp_data = dev_get_drvdata(parent);
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!res) {
 		dev_err(&pdev->dev, "IORESOURCE_MEM FAILED\n");
···
 		return -ENOMEM;
 
 	adata->capture_stream = NULL;
-	adata->acp_lock = pdev->dev.platform_data;
+	adata->acp_lock = &acp_data->acp_lock;
 	dev_set_drvdata(&pdev->dev, adata);
 	status = devm_snd_soc_register_component(&pdev->dev,
 						 &acp63_pdm_component,