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drm/mediatek: Simplify mtk_crtc allocation

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Use a flexible array member to combine allocations.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
Reviewed-by: CK Hu <ck.hu@mediatek.com>
Link: https://patchwork.kernel.org/project/dri-devel/patch/20260331002357.7995-1-rosenp@gmail.com/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
This commit is contained in:
Rosen Penev 2026-03-30 17:23:57 -07:00 committed by Chun-Kuang Hu
parent 38961a5ecb
commit d78733e950
1 changed files with 6 additions and 9 deletions
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15
drivers/gpu/drm/mediatek/mtk_crtc.c
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@ -62,7 +62,6 @@ struct mtk_crtc {
struct device *dma_dev;
struct mtk_mutex *mutex;
unsigned int ddp_comp_nr;
struct mtk_ddp_comp **ddp_comp;
unsigned int num_conn_routes;
const struct mtk_drm_route *conn_routes;
@ -71,6 +70,8 @@ struct mtk_crtc {
bool config_updating;
/* lock for config_updating to cmd buffer */
spinlock_t config_lock;
struct mtk_ddp_comp *ddp_comp[];
};
struct mtk_crtc_state {
@ -1048,18 +1049,14 @@ int mtk_crtc_create(struct drm_device *drm_dev, const unsigned int *path,
}
}
mtk_crtc = devm_kzalloc(dev, sizeof(*mtk_crtc), GFP_KERNEL);
mtk_crtc = devm_kzalloc(dev,
struct_size(mtk_crtc, ddp_comp, path_len + (conn_routes ? 1 : 0)),
GFP_KERNEL);
if (!mtk_crtc)
return -ENOMEM;
mtk_crtc->mmsys_dev = priv->mmsys_dev;
mtk_crtc->ddp_comp_nr = path_len;
mtk_crtc->ddp_comp = devm_kcalloc(dev,
mtk_crtc->ddp_comp_nr + (conn_routes ? 1 : 0),
sizeof(*mtk_crtc->ddp_comp),
GFP_KERNEL);
if (!mtk_crtc->ddp_comp)
return -ENOMEM;
mtk_crtc->mmsys_dev = priv->mmsys_dev;
mtk_crtc->mutex = mtk_mutex_get(priv->mutex_dev);
if (IS_ERR(mtk_crtc->mutex)) {