[PATCH 4/5] drm/amdgpu: Add API to queue and do reset work

[Lijo Lazar]

Add API which queues a work to reset domain and waits for it to finish.

Signed-off-by: Lijo Lazar <lijo.lazar at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c | 18 ++++++++++++++++++
 drivers/gpu/drm/amd/amdgpu/amdgpu_reset.h |  4 ++++
 2 files changed, 22 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c
index 713362a60c9f..0c29acb65b88 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c
@@ -263,3 +263,21 @@ int amdgpu_reset_schedule_work(struct amdgpu_device *adev,
 	return ret;
 }
 
+int amdgpu_reset_exec_work(struct amdgpu_device *adev,
+			   struct amdgpu_reset_context *reset_context,
+			   amdgpu_reset_work_func_t reset_work_handler)
+{
+	struct amdgpu_reset_work reset_work;
+
+	if (!reset_context || !reset_context->reset_req_dev ||
+	    !reset_work_handler)
+		return -EINVAL;
+
+	INIT_WORK_ONSTACK(&reset_work.work, amdgpu_reset_work_handler);
+	amdgpu_reset_init_work(&reset_work, reset_context, reset_work_handler);
+	queue_work(adev->reset_domain->wq, &reset_work.work);
+	flush_work(&reset_work.work);
+	destroy_work_on_stack(&reset_work.work);
+
+	return 0;
+}
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.h
index 73d1f78d2b0e..dba719012516 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.h
@@ -145,9 +145,13 @@ void amdgpu_device_unlock_reset_domain(struct amdgpu_reset_domain *reset_domain)
 int amdgpu_reset_schedule_work(struct amdgpu_device *adev,
 			       struct amdgpu_reset_context *reset_context,
 			       amdgpu_reset_work_func_t handler);
+int amdgpu_reset_exec_work(struct amdgpu_device *adev,
+			   struct amdgpu_reset_context *reset_context,
+			   amdgpu_reset_work_func_t reset_work_handler);
 
 #define for_each_handler(i, handler, reset_ctl)                  \
 	for (i = 0; (i < AMDGPU_RESET_MAX_HANDLERS) &&           \
 		    (handler = (*reset_ctl->reset_handlers)[i]); \
 	     ++i)
+
 #endif
-- 
2.25.1