v4l2_isp_params_buffer_size
.buffersize = v4l2_isp_params_buffer_size(MALI_C55_PARAMS_MAX_SIZE),
if (sizes[0] && sizes[0] < v4l2_isp_params_buffer_size(MALI_C55_PARAMS_MAX_SIZE))
sizes[0] = v4l2_isp_params_buffer_size(MALI_C55_PARAMS_MAX_SIZE);
buf->config = kvmalloc(v4l2_isp_params_buffer_size(MALI_C55_PARAMS_MAX_SIZE),
v4l2_isp_params_buffer_size(MALI_C55_PARAMS_MAX_SIZE));
memcpy(buf->config, config, v4l2_isp_params_buffer_size(MALI_C55_PARAMS_MAX_SIZE));