ERROR: "rational_best_approximation" [drivers/tty/serial/8250/8250_mid.ko] undefined!

From: kbuild test robot
Date: Mon Nov 16 2015 - 16:53:31 EST

tree: master
head: 8005c49d9aea74d382f474ce11afbbc7d7130bec
commit: d9eda9bab237259b06690652b145d19e0ce37a77 serial: 8250_pci: Intel MID UART support to its own driver
date: 4 weeks ago
config: x86_64-randconfig-s5-11170458 (attached as .config)
git checkout d9eda9bab237259b06690652b145d19e0ce37a77
# save the attached .config to linux build tree
make ARCH=x86_64

All errors (new ones prefixed by >>):

>> ERROR: "rational_best_approximation" [drivers/tty/serial/8250/8250_mid.ko] undefined!

0-DAY kernel test infrastructure Open Source Technology Center Intel Corporation

Attachment: .config.gz
Description: Binary data