device_sysfs.c:undefined reference to `utf16s_to_utf8s'

From: kbuild test robot
Date: Sun Dec 30 2018 - 00:18:03 EST


Hi Sinan,

FYI, the error/warning still remains.

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 195303136f192d37b89e20a8d1d2670d0d825266
commit: 5d32a66541c4683456507481a0944ed2985e75c7 PCI/ACPI: Allow ACPI to be built without CONFIG_PCI set
date: 10 days ago
config: i386-alldefconfig (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
git checkout 5d32a66541c4683456507481a0944ed2985e75c7
# save the attached .config to linux build tree
make ARCH=i386

All errors (new ones prefixed by >>):

drivers/acpi/device_sysfs.o: In function `description_show':
>> device_sysfs.c:(.text+0x44b): undefined reference to `utf16s_to_utf8s'

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