* @region: FPGA Region struct
*
* Caller should call fpga_region_put() when done with region.
*
* Return fpga_region struct if successful.
* Return -EBUSY if someone already has a reference to the region.
* @region: FPGA Region struct
*
* Caller should call fpga_region_put() when done with region.
*
* Return fpga_region struct if successful.
* Return -EBUSY if someone already has a reference to the region.