drm/amdgpu: fix incorrect use of amdgpu_irq_add_id in si_dma.c

Adding a second irq source because of a different src_id is actually a
bug.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.h

@@ -46,10 +46,6 @@ struct amdgpu_sdma_instance {
 
 struct amdgpu_sdma {
 	struct amdgpu_sdma_instance instance[AMDGPU_MAX_SDMA_INSTANCES];
-#ifdef CONFIG_DRM_AMDGPU_SI
-	//SI DMA has a difference trap irq number for the second engine
-	struct amdgpu_irq_src	trap_irq_1;
-#endif
 	struct amdgpu_irq_src	trap_irq;
 	struct amdgpu_irq_src	illegal_inst_irq;
 	int			num_instances;

drivers/gpu/drm/amd/amdgpu/si_dma.c

@@ -502,12 +502,14 @@ static int si_dma_sw_init(void *handle)
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 
 	/* DMA0 trap event */
-	r = amdgpu_irq_add_id(adev, AMDGPU_IRQ_CLIENTID_LEGACY, 224, &adev->sdma.trap_irq);
+	r = amdgpu_irq_add_id(adev, AMDGPU_IRQ_CLIENTID_LEGACY, 224,
+			      &adev->sdma.trap_irq);
 	if (r)
 		return r;
 
 	/* DMA1 trap event */
-	r = amdgpu_irq_add_id(adev, AMDGPU_IRQ_CLIENTID_LEGACY, 244, &adev->sdma.trap_irq_1);
+	r = amdgpu_irq_add_id(adev, AMDGPU_IRQ_CLIENTID_LEGACY, 244,
+			      &adev->sdma.trap_irq);
 	if (r)
 		return r;
 
@@ -649,17 +651,10 @@ static int si_dma_process_trap_irq(struct amdgpu_device *adev,
 				      struct amdgpu_irq_src *source,
 				      struct amdgpu_iv_entry *entry)
 {
-	amdgpu_fence_process(&adev->sdma.instance[0].ring);
-
-	return 0;
-}
-
-static int si_dma_process_trap_irq_1(struct amdgpu_device *adev,
-				      struct amdgpu_irq_src *source,
-				      struct amdgpu_iv_entry *entry)
-{
-	amdgpu_fence_process(&adev->sdma.instance[1].ring);
-
+	if (entry->src_id == 224)
+		amdgpu_fence_process(&adev->sdma.instance[0].ring);
+	else
+		amdgpu_fence_process(&adev->sdma.instance[1].ring);
 	return 0;
 }
 
@@ -786,11 +781,6 @@ static const struct amdgpu_irq_src_funcs si_dma_trap_irq_funcs = {
 	.process = si_dma_process_trap_irq,
 };
 
-static const struct amdgpu_irq_src_funcs si_dma_trap_irq_funcs_1 = {
-	.set = si_dma_set_trap_irq_state,
-	.process = si_dma_process_trap_irq_1,
-};
-
 static const struct amdgpu_irq_src_funcs si_dma_illegal_inst_irq_funcs = {
 	.process = si_dma_process_illegal_inst_irq,
 };
@@ -799,7 +789,6 @@ static void si_dma_set_irq_funcs(struct amdgpu_device *adev)
 {
 	adev->sdma.trap_irq.num_types = AMDGPU_SDMA_IRQ_LAST;
 	adev->sdma.trap_irq.funcs = &si_dma_trap_irq_funcs;
-	adev->sdma.trap_irq_1.funcs = &si_dma_trap_irq_funcs_1;
 	adev->sdma.illegal_inst_irq.funcs = &si_dma_illegal_inst_irq_funcs;
 }