*/
 
        /* TODO: It needs to continue working on debugging with semaphore for GFXHUB as well. */
-       if (vmhub == AMDGPU_MMHUB_0 ||
-           vmhub == AMDGPU_MMHUB_1) {
+       if ((vmhub == AMDGPU_MMHUB_0 ||
+            vmhub == AMDGPU_MMHUB_1) &&
+           (!(adev->asic_type == CHIP_RAVEN &&
+              adev->rev_id < 0x8 &&
+              adev->pdev->device == 0x15d8))) {
                for (j = 0; j < adev->usec_timeout; j++) {
                        /* a read return value of 1 means semaphore acuqire */
                        tmp = RREG32_NO_KIQ(hub->vm_inv_eng0_sem + eng);
        }
 
        /* TODO: It needs to continue working on debugging with semaphore for GFXHUB as well. */
-       if (vmhub == AMDGPU_MMHUB_0 ||
-           vmhub == AMDGPU_MMHUB_1)
+       if ((vmhub == AMDGPU_MMHUB_0 ||
+            vmhub == AMDGPU_MMHUB_1) &&
+           (!(adev->asic_type == CHIP_RAVEN &&
+              adev->rev_id < 0x8 &&
+              adev->pdev->device == 0x15d8)))
                /*
                 * add semaphore release after invalidation,
                 * write with 0 means semaphore release
         */
 
        /* TODO: It needs to continue working on debugging with semaphore for GFXHUB as well. */
-       if (ring->funcs->vmhub == AMDGPU_MMHUB_0 ||
-           ring->funcs->vmhub == AMDGPU_MMHUB_1)
+       if ((ring->funcs->vmhub == AMDGPU_MMHUB_0 ||
+            ring->funcs->vmhub == AMDGPU_MMHUB_1) &&
+           (!(adev->asic_type == CHIP_RAVEN &&
+              adev->rev_id < 0x8 &&
+              adev->pdev->device == 0x15d8)))
                /* a read return value of 1 means semaphore acuqire */
                amdgpu_ring_emit_reg_wait(ring,
                                          hub->vm_inv_eng0_sem + eng, 0x1, 0x1);
                                            req, 1 << vmid);
 
        /* TODO: It needs to continue working on debugging with semaphore for GFXHUB as well. */
-       if (ring->funcs->vmhub == AMDGPU_MMHUB_0 ||
-           ring->funcs->vmhub == AMDGPU_MMHUB_1)
+       if ((ring->funcs->vmhub == AMDGPU_MMHUB_0 ||
+            ring->funcs->vmhub == AMDGPU_MMHUB_1) &&
+           (!(adev->asic_type == CHIP_RAVEN &&
+              adev->rev_id < 0x8 &&
+              adev->pdev->device == 0x15d8)))
                /*
                 * add semaphore release after invalidation,
                 * write with 0 means semaphore release