ERROR: "ia64_delay_loop" [drivers/spi/spi-thunderx.ko] undefined!

From: kbuild test robot
Date: Wed Feb 28 2018 - 22:19:11 EST


Hi Robin,

First bad commit (maybe != root cause):

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 97ace515f01439d4cf6e898b4094040dc12d36e7
commit: e1a50de37860b3a93a9d643b09638db5aff47650 arm64: cputype: Silence Sparse warnings
date: 12 days ago
config: ia64-allmodconfig (attached as .config)
compiler: ia64-linux-gcc (GCC) 7.2.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout e1a50de37860b3a93a9d643b09638db5aff47650
# save the attached .config to linux build tree
make.cross ARCH=ia64

All errors (new ones prefixed by >>):

>> ERROR: "ia64_delay_loop" [drivers/spi/spi-thunderx.ko] undefined!
ERROR: "ia64_delay_loop" [drivers/net/phy/mdio-cavium.ko] undefined!

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