[PATCH] drm/nouveau/gsp: Use kzalloc_flex() for r535 display funcs

[Rosen Penev <rosenp@gmail.com>]

struct nvkm_disp_func ends with the user flexible array member. Allocate the
r535 display function table with kzalloc_flex() instead of open-coding the
size calculation with sizeof().

This makes the allocation describe the object being allocated directly and
keeps the fixed six user entries unchanged.

Assisted-by: Codex:GPT-5.5
Signed-off-by: Rosen Penev <rosenp@gmail.com>
---
 drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/r535/disp.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/r535/disp.c b/drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/r535/disp.c
index 6e63df816d85..1155f079b0c3 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/r535/disp.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/r535/disp.c
@@ -1734,7 +1734,8 @@ r535_disp_new(const struct nvkm_disp_func *hw, struct nvkm_device *device,
 	struct nvkm_disp_func *rm;
 	int ret;
 
-	if (!(rm = kzalloc(sizeof(*rm) + 6 * sizeof(rm->user[0]), GFP_KERNEL)))
+	rm = kzalloc_flex(*rm, user, 6);
+	if (!rm)
 		return -ENOMEM;
 
 	rm->dtor = r535_disp_dtor;
-- 
2.54.0