[alsa-devel] [PATCH 05/11] ASoC: Intel: Skylake: Don't unload module when in use

[jeeja.kp at intel.com]

From: Vinod Koul <vinod.koul at intel.com>

A module may have multiple instances in DSP, so unload only when usage
count is zero.

Signed-off-by: Vinod Koul <vinod.koul at intel.com>
Signed-off-by: Jeeja KP <jeeja.kp at intel.com>
---
 sound/soc/intel/skylake/skl-sst.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/sound/soc/intel/skylake/skl-sst.c b/sound/soc/intel/skylake/skl-sst.c
index 39d4aaa..5395297 100644
--- a/sound/soc/intel/skylake/skl-sst.c
+++ b/sound/soc/intel/skylake/skl-sst.c
@@ -417,6 +417,11 @@ static int skl_unload_module(struct sst_dsp *ctx, u16 mod_id)
 		dev_err(ctx->dev, "Module bad usage cnt!:%d\n", usage_cnt);
 		return -EIO;
 	}
+
+	/* if module is used by others return, no need to unload */
+	if (usage_cnt > 0)
+		return 0;
+
 	ret = skl_ipc_unload_modules(&skl->ipc,
 			SKL_NUM_MODULES, &mod_id);
 	if (ret < 0) {
-- 
2.5.0