[PATCH 08/11] drm/msm: Add a common function to free kernel buffer objects

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Buffer objects allocated with msm_gem_kernel_new() are mostly
freed the same way so we can save a few lines of code with a
common function.

Signed-off-by: Jordan Crouse <jcrouse@xxxxxxxxxxxxxx>
---
 drivers/gpu/drm/msm/adreno/a5xx_gpu.c       | 13 ++-----------
 drivers/gpu/drm/msm/adreno/a5xx_power.c     | 13 +------------
 drivers/gpu/drm/msm/adreno/a5xx_preempt.c   | 14 ++------------
 drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c | 11 +----------
 drivers/gpu/drm/msm/msm_drv.h               |  2 ++
 drivers/gpu/drm/msm/msm_gem.c               | 15 +++++++++++++++
 drivers/gpu/drm/msm/msm_gpu.c               | 12 ++----------
 drivers/gpu/drm/msm/msm_ringbuffer.c        |  7 ++-----
 8 files changed, 27 insertions(+), 60 deletions(-)

diff --git a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
index 2f21a559b15c..829d12b18f11 100644
--- a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
@@ -1223,15 +1223,6 @@ static int a5xx_crashdumper_init(struct msm_gpu *gpu,
 	return 0;
 }
 
-static void a5xx_crashdumper_free(struct msm_gpu *gpu,
-		struct a5xx_crashdumper *dumper)
-{
-	msm_gem_put_iova(dumper->bo, gpu->aspace);
-	msm_gem_put_vaddr(dumper->bo);
-
-	drm_gem_object_put(dumper->bo);
-}
-
 static int a5xx_crashdumper_run(struct msm_gpu *gpu,
 		struct a5xx_crashdumper *dumper)
 {
@@ -1324,7 +1315,7 @@ static void a5xx_gpu_state_get_hlsq_regs(struct msm_gpu *gpu,
 
 	if (a5xx_crashdumper_run(gpu, &dumper)) {
 		kfree(a5xx_state->hlsqregs);
-		a5xx_crashdumper_free(gpu, &dumper);
+		msm_gem_kernel_put(dumper.bo, gpu->aspace, true);
 		return;
 	}
 
@@ -1332,7 +1323,7 @@ static void a5xx_gpu_state_get_hlsq_regs(struct msm_gpu *gpu,
 	memcpy(a5xx_state->hlsqregs, dumper.ptr + (256 * SZ_1K),
 		count * sizeof(u32));
 
-	a5xx_crashdumper_free(gpu, &dumper);
+	msm_gem_kernel_put(dumper.bo, gpu->aspace, true);
 }
 
 static struct msm_gpu_state *a5xx_gpu_state_get(struct msm_gpu *gpu)
diff --git a/drivers/gpu/drm/msm/adreno/a5xx_power.c b/drivers/gpu/drm/msm/adreno/a5xx_power.c
index 7a41e1c147e4..66bcd88dd8c0 100644
--- a/drivers/gpu/drm/msm/adreno/a5xx_power.c
+++ b/drivers/gpu/drm/msm/adreno/a5xx_power.c
@@ -298,7 +298,7 @@ void a5xx_gpmu_ucode_init(struct msm_gpu *gpu)
 		MSM_BO_UNCACHED | MSM_BO_GPU_READONLY, gpu->aspace,
 		&a5xx_gpu->gpmu_bo, &a5xx_gpu->gpmu_iova);
 	if (IS_ERR(ptr))
-		goto err;
+		return;
 
 	while (cmds_size > 0) {
 		int i;
@@ -317,15 +317,4 @@ void a5xx_gpmu_ucode_init(struct msm_gpu *gpu)
 
 	msm_gem_put_vaddr(a5xx_gpu->gpmu_bo);
 	a5xx_gpu->gpmu_dwords = dwords;
-
-	return;
-err:
-	if (a5xx_gpu->gpmu_iova)
-		msm_gem_put_iova(a5xx_gpu->gpmu_bo, gpu->aspace);
-	if (a5xx_gpu->gpmu_bo)
-		drm_gem_object_put(a5xx_gpu->gpmu_bo);
-
-	a5xx_gpu->gpmu_bo = NULL;
-	a5xx_gpu->gpmu_iova = 0;
-	a5xx_gpu->gpmu_dwords = 0;
 }
diff --git a/drivers/gpu/drm/msm/adreno/a5xx_preempt.c b/drivers/gpu/drm/msm/adreno/a5xx_preempt.c
index 4c357ead1be6..8a371602cb1c 100644
--- a/drivers/gpu/drm/msm/adreno/a5xx_preempt.c
+++ b/drivers/gpu/drm/msm/adreno/a5xx_preempt.c
@@ -267,18 +267,8 @@ void a5xx_preempt_fini(struct msm_gpu *gpu)
 	struct a5xx_gpu *a5xx_gpu = to_a5xx_gpu(adreno_gpu);
 	int i;
 
-	for (i = 0; i < gpu->nr_rings; i++) {
-		if (!a5xx_gpu->preempt_bo[i])
-			continue;
-
-		msm_gem_put_vaddr(a5xx_gpu->preempt_bo[i]);
-
-		if (a5xx_gpu->preempt_iova[i])
-			msm_gem_put_iova(a5xx_gpu->preempt_bo[i], gpu->aspace);
-
-		drm_gem_object_put(a5xx_gpu->preempt_bo[i]);
-		a5xx_gpu->preempt_bo[i] = NULL;
-	}
+	for (i = 0; i < gpu->nr_rings; i++)
+		msm_gem_kernel_put(a5xx_gpu->preempt_bo[i], gpu->aspace, true);
 }
 
 void a5xx_preempt_init(struct msm_gpu *gpu)
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c
index d46b94462bb5..89d713a979ad 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c
@@ -120,15 +120,6 @@ static int a6xx_crashdumper_run(struct msm_gpu *gpu,
 	return ret;
 }
 
-static void a6xx_crashdumper_free(struct msm_gpu *gpu,
-		struct a6xx_crashdumper *dumper)
-{
-	msm_gem_put_iova(dumper->bo, gpu->aspace);
-	msm_gem_put_vaddr(dumper->bo);
-
-	drm_gem_object_unreference(dumper->bo);
-}
-
 /* read a value from the GX debug bus */
 static int debugbus_read(struct msm_gpu *gpu, u32 block, u32 offset,
 		u32 *data)
@@ -846,7 +837,7 @@ struct msm_gpu_state *a6xx_gpu_state_get(struct msm_gpu *gpu)
 		a6xx_get_clusters(gpu, a6xx_state, &dumper);
 		a6xx_get_dbgahb_clusters(gpu, a6xx_state, &dumper);
 
-		a6xx_crashdumper_free(gpu, &dumper);
+		msm_gem_kernel_put(dumper.bo, gpu->aspace, true);
 	}
 
 	a6xx_get_debugbus(gpu, a6xx_state);
diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h
index 9d11f321f5a9..3225f8fbd8c9 100644
--- a/drivers/gpu/drm/msm/msm_drv.h
+++ b/drivers/gpu/drm/msm/msm_drv.h
@@ -312,6 +312,8 @@ void *msm_gem_kernel_new(struct drm_device *dev, uint32_t size,
 void *msm_gem_kernel_new_locked(struct drm_device *dev, uint32_t size,
 		uint32_t flags, struct msm_gem_address_space *aspace,
 		struct drm_gem_object **bo, uint64_t *iova);
+void msm_gem_kernel_put(struct drm_gem_object *bo,
+		struct msm_gem_address_space *aspace, bool locked);
 struct drm_gem_object *msm_gem_import(struct drm_device *dev,
 		struct dma_buf *dmabuf, struct sg_table *sgt);
 
diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c
index fa50fd857366..9b38fb685022 100644
--- a/drivers/gpu/drm/msm/msm_gem.c
+++ b/drivers/gpu/drm/msm/msm_gem.c
@@ -1079,3 +1079,18 @@ void *msm_gem_kernel_new_locked(struct drm_device *dev, uint32_t size,
 {
 	return _msm_gem_kernel_new(dev, size, flags, aspace, bo, iova, true);
 }
+
+void msm_gem_kernel_put(struct drm_gem_object *bo,
+		struct msm_gem_address_space *aspace, bool locked)
+{
+	if (IS_ERR_OR_NULL(bo))
+		return;
+
+	msm_gem_put_vaddr(bo);
+	msm_gem_put_iova(bo, aspace);
+
+	if (locked)
+		drm_gem_object_put(bo);
+	else
+		drm_gem_object_put_unlocked(bo);
+}
diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c
index 84ba8b0fd391..b02ccbf5291f 100644
--- a/drivers/gpu/drm/msm/msm_gpu.c
+++ b/drivers/gpu/drm/msm/msm_gpu.c
@@ -965,11 +965,7 @@ int msm_gpu_init(struct drm_device *drm, struct platform_device *pdev,
 		gpu->rb[i] = NULL;
 	}
 
-	if (gpu->memptrs_bo) {
-		msm_gem_put_vaddr(gpu->memptrs_bo);
-		msm_gem_put_iova(gpu->memptrs_bo, gpu->aspace);
-		drm_gem_object_put_unlocked(gpu->memptrs_bo);
-	}
+	msm_gem_kernel_put(gpu->memptrs_bo, gpu->aspace, false);
 
 	platform_set_drvdata(pdev, NULL);
 	return ret;
@@ -988,11 +984,7 @@ void msm_gpu_cleanup(struct msm_gpu *gpu)
 		gpu->rb[i] = NULL;
 	}
 
-	if (gpu->memptrs_bo) {
-		msm_gem_put_vaddr(gpu->memptrs_bo);
-		msm_gem_put_iova(gpu->memptrs_bo, gpu->aspace);
-		drm_gem_object_put_unlocked(gpu->memptrs_bo);
-	}
+	msm_gem_kernel_put(gpu->memptrs_bo, gpu->aspace, false);
 
 	if (!IS_ERR_OR_NULL(gpu->aspace)) {
 		gpu->aspace->mmu->funcs->detach(gpu->aspace->mmu,
diff --git a/drivers/gpu/drm/msm/msm_ringbuffer.c b/drivers/gpu/drm/msm/msm_ringbuffer.c
index 6f5295b3f2f6..9fa9525c5293 100644
--- a/drivers/gpu/drm/msm/msm_ringbuffer.c
+++ b/drivers/gpu/drm/msm/msm_ringbuffer.c
@@ -73,10 +73,7 @@ void msm_ringbuffer_destroy(struct msm_ringbuffer *ring)
 
 	msm_fence_context_free(ring->fctx);
 
-	if (ring->bo) {
-		msm_gem_put_iova(ring->bo, ring->gpu->aspace);
-		msm_gem_put_vaddr(ring->bo);
-		drm_gem_object_put_unlocked(ring->bo);
-	}
+	msm_gem_kernel_put(ring->bo, ring->gpu->aspace, false);
+
 	kfree(ring);
 }
-- 
2.18.0

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