drm/nouveau/dp: convert to use ERR_CAST()

As opposed to open-code, use ERR_CAST to clearly indicate that this is a
pointer to an error value and a type conversion is performed.

Signed-off-by: Zhang Enpei <zhang.enpei@zte.com.cn>
Link: https://lore.kernel.org/r/20250515201108576jof-gkjSxRfMaGDgKo-pc@zte.com.cn
Signed-off-by: Danilo Krummrich <dakr@kernel.org>

diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/r535.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/r535.c
index 99110ab2f44dcd83395425a71329c0fad9fe0862..43ad467d09db79f070df16db0760a4ddd83e60b1 100644 (file)
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/r535.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/r535.c
@@ -646,7 +646,7 @@ r535_conn_new(struct nvkm_disp *disp, u32 id)
        ctrl = nvkm_gsp_rm_ctrl_get(&disp->rm.objcom,
                                    NV0073_CTRL_CMD_SPECIFIC_GET_CONNECTOR_DATA, sizeof(*ctrl));
        if (IS_ERR(ctrl))
-               return (void *)ctrl;
+               return ERR_CAST(ctrl);
 
        ctrl->subDeviceInstance = 0;
        ctrl->displayId = BIT(id);