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SubjectERROR: "bad_dma_ops" [drivers/tty/serial/stm32-usart.ko] undefined!
Hi Alexandre,

First bad commit (maybe != root cause):

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 1001354ca34179f3db924eb66672442a173147dc
commit: 3489187204eb75e5635d8836babfd0a18be613f4 serial: stm32: adding dma support
date: 3 weeks ago
config: m32r-allmodconfig (attached as .config)
compiler: m32r-linux-gcc (GCC) 6.2.0
reproduce:
wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout 3489187204eb75e5635d8836babfd0a18be613f4
# save the attached .config to linux build tree
make.cross ARCH=m32r

All errors (new ones prefixed by >>):

ERROR: "bad_dma_ops" [sound/soc/bcm/snd-soc-cygnus.ko] undefined!
ERROR: "bad_dma_ops" [sound/core/snd-pcm.ko] undefined!
ERROR: "dma_common_mmap" [sound/core/snd-pcm.ko] undefined!
>> ERROR: "bad_dma_ops" [drivers/tty/serial/stm32-usart.ko] undefined!

---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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