[PATCH v2] media: qcom: iris: handle runtime PM resume failure in core deinit

[Hungyu Lin <dennylin0707@gmail.com>]

Check the return value of pm_runtime_resume_and_get() in
iris_core_deinit().

If runtime PM resume fails, skip hardware power-off operations but
still perform software teardown and state transition. Also skip the
corresponding pm_runtime_put_sync() call to avoid unbalanced runtime
PM references.

Fixes: bb8a95aa038e ("media: iris: implement power management")
Signed-off-by: Hungyu Lin <dennylin0707@gmail.com>
---
Changes in v2:
- Keep software teardown and state transition when runtime PM resume fails
- Skip only hardware power-off operations and pm_runtime_put_sync()

 drivers/media/platform/qcom/iris/iris_core.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/drivers/media/platform/qcom/iris/iris_core.c b/drivers/media/platform/qcom/iris/iris_core.c
index dbaac01eb15a..bf3c7f722490 100644
--- a/drivers/media/platform/qcom/iris/iris_core.c
+++ b/drivers/media/platform/qcom/iris/iris_core.c
@@ -12,18 +12,24 @@
 
 void iris_core_deinit(struct iris_core *core)
 {
-	pm_runtime_resume_and_get(core->dev);
+	int ret;
+
+	ret = pm_runtime_resume_and_get(core->dev);
 
 	mutex_lock(&core->lock);
 	if (core->state != IRIS_CORE_DEINIT) {
 		iris_fw_unload(core);
-		iris_vpu_power_off(core);
+
+		if (!ret)
+			iris_vpu_power_off(core);
+
 		iris_hfi_queues_deinit(core);
 		core->state = IRIS_CORE_DEINIT;
 	}
 	mutex_unlock(&core->lock);
 
-	pm_runtime_put_sync(core->dev);
+	if (!ret)
+		pm_runtime_put_sync(core->dev);
 }
 
 static int iris_wait_for_system_response(struct iris_core *core)
-- 
2.34.1