Add mutex lock for accessing ACP common registers across different
modules.
Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@xxxxxxx>
---
sound/soc/amd/ps/acp63.h | 1 +
sound/soc/amd/ps/pci-ps.c | 4 +++-
2 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/sound/soc/amd/ps/acp63.h b/sound/soc/amd/ps/acp63.h
index 8f024cb309c9..47854280dd4b 100644
--- a/sound/soc/amd/ps/acp63.h
+++ b/sound/soc/amd/ps/acp63.h
@@ -106,6 +106,7 @@ struct acp63_dev_data {
struct resource *res;
bool acp63_audio_mode;
struct platform_device *pdev[ACP63_DEVS];
+ struct mutex acp_lock; /* protect shared registers */
u16 pdev_mask;
u16 pdev_count;
u16 pdm_dev_index;
diff --git a/sound/soc/amd/ps/pci-ps.c b/sound/soc/amd/ps/pci-ps.c
index 401cfd0036be..6335595ec5b9 100644
--- a/sound/soc/amd/ps/pci-ps.c
+++ b/sound/soc/amd/ps/pci-ps.c
@@ -209,7 +209,8 @@ static int create_acp63_platform_devs(struct pci_dev *pci, struct acp63_dev_data
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, NULL, 0);
+ 0, adata->res, 1, &adata->acp_lock,
+ sizeof(adata->acp_lock));
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",
@@ -283,6 +284,7 @@ static int snd_acp63_probe(struct pci_dev *pci,
}
pci_set_master(pci);
pci_set_drvdata(pci, adata);
+ mutex_init(&adata->acp_lock);
ret = acp63_init(adata->acp63_base, &pci->dev);
if (ret)
goto release_regions;
--
2.34.1
