next-20210409 build breakage in drivers/iommu/mtk_iommu_v1.c
Valdis Klētnieks
valdis.kletnieks at vt.edu
Sun Apr 11 21:07:43 BST 2021
This commit:
commit 8de000cf0265eaa4f63aff9f2c7a3876d2dda9b6
Author: Yong Wu <yong.wu at mediatek.com>
Date: Fri Mar 26 11:23:36 2021 +0800
iommu/mediatek-v1: Allow building as module
changes drivers/iommu/Kcconfig
config MTK_IOMMU_V1
- bool "MTK IOMMU Version 1 (M4U gen1) Support"
+ tristate "MediaTek IOMMU Version 1 (M4U gen1) Support"
Unfortunately, this doesn't actually build properly as a module, because:
MODPOST modules-only.symvers
ERROR: modpost: "of_phandle_iterator_args" [drivers/iommu/mtk_iommu_v1.ko] undefined!
make[2]: *** [/usr/src/linux-next/scripts/Makefile.modpost:150: modules-only.symvers] Error 1
There's no EXPORT_SYMBOL and drivers/of/base.o is a built-in, so
the symbol isn't available to modules.
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