[etnaviv-next v12 2/8] drm/etnaviv: Add constructor and destructor for struct etnaviv_drm_private

Sui Jingfeng
2023-11-29T22:02:50Z

Noticed that there are a lot of members in the struct etnaviv_drm_private,
which are intended to be shared by all GPU cores. Introduces two helpers
for construction and destruction purpose for it. The benefit is that error
handling get simplified a lot.

Signed-off-by: Sui Jingfeng <suijingfeng@loongson.cn>
---
drivers/gpu/drm/etnaviv/etnaviv_drv.c | 70 +++++++++++++++++----------
1 file changed, 44 insertions(+), 26 deletions(-)

diff --git a/drivers/gpu/drm/etnaviv/etnaviv_drv.c b/drivers/gpu/drm/etnaviv/etnaviv_drv.c
index a9a1659840ec..41ef7a8b7839 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_drv.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_drv.c
@@ -41,6 +41,43 @@ static struct device_node *etnaviv_of_first_available_node(void)
return NULL;
}

+static struct etnaviv_drm_private *etnaviv_alloc_private(struct device *dev)
+{
+ struct etnaviv_drm_private *priv;
+
+ priv = kzalloc(sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return ERR_PTR(-ENOMEM);
+
+ xa_init_flags(&priv->active_contexts, XA_FLAGS_ALLOC);
+
+ mutex_init(&priv->gem_lock);
+ INIT_LIST_HEAD(&priv->gem_list);
+ priv->num_gpus = 0;
+ priv->shm_gfp_mask = GFP_HIGHUSER | __GFP_RETRY_MAYFAIL | __GFP_NOWARN;
+
+ priv->cmdbuf_suballoc = etnaviv_cmdbuf_suballoc_new(dev);
+ if (IS_ERR(priv->cmdbuf_suballoc)) {
+ kfree(priv);
+ dev_err(dev, "Failed to create cmdbuf suballocator\n");
+ return ERR_PTR(-ENOMEM);
+ }
+
+ return priv;
+}
+
+static void etnaviv_free_private(struct etnaviv_drm_private *priv)
+{
+ if (!priv)
+ return;
+
+ etnaviv_cmdbuf_suballoc_destroy(priv->cmdbuf_suballoc);
+
+ xa_destroy(&priv->active_contexts);
+
+ kfree(priv);
+}
+
static void load_gpu(struct drm_device *dev)
{
struct etnaviv_drm_private *priv = dev->dev_private;
@@ -521,35 +558,21 @@ static int etnaviv_bind(struct device *dev)
if (IS_ERR(drm))
return PTR_ERR(drm);

- priv = kzalloc(sizeof(*priv), GFP_KERNEL);
- if (!priv) {
- dev_err(dev, "failed to allocate private data\n");
- ret = -ENOMEM;
+ priv = etnaviv_alloc_private(dev);
+ if (IS_ERR(priv)) {
+ ret = PTR_ERR(priv);
goto out_put;
}
+
drm->dev_private = priv;

dma_set_max_seg_size(dev, SZ_2G);

- xa_init_flags(&priv->active_contexts, XA_FLAGS_ALLOC);
-
- mutex_init(&priv->gem_lock);
- INIT_LIST_HEAD(&priv->gem_list);
- priv->num_gpus = 0;
- priv->shm_gfp_mask = GFP_HIGHUSER | __GFP_RETRY_MAYFAIL | __GFP_NOWARN;
-
- priv->cmdbuf_suballoc = etnaviv_cmdbuf_suballoc_new(drm->dev);
- if (IS_ERR(priv->cmdbuf_suballoc)) {
- dev_err(drm->dev, "Failed to create cmdbuf suballocator\n");
- ret = PTR_ERR(priv->cmdbuf_suballoc);
- goto out_free_priv;
- }
-
dev_set_drvdata(dev, drm);

ret = component_bind_all(dev, drm);
if (ret < 0)
- goto out_destroy_suballoc;
+ goto out_free_priv;

load_gpu(drm);

@@ -561,10 +584,8 @@ static int etnaviv_bind(struct device *dev)

out_unbind:
component_unbind_all(dev, drm);
-out_destroy_suballoc:
- etnaviv_cmdbuf_suballoc_destroy(priv->cmdbuf_suballoc);
out_free_priv:
- kfree(priv);
+ etnaviv_free_private(priv);
out_put:
drm_dev_put(drm);

@@ -580,12 +601,9 @@ static void etnaviv_unbind(struct device *dev)

component_unbind_all(dev, drm);

- etnaviv_cmdbuf_suballoc_destroy(priv->cmdbuf_suballoc);
-
- xa_destroy(&priv->active_contexts);
+ etnaviv_free_private(priv);

drm->dev_private = NULL;
- kfree(priv);

drm_dev_put(drm);
}
--
2.34.1