The current code adds the delta twice, which is obviously wrong.
Signed-off-by: NJohn Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11443/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>