Hi Ohad,

FYI, kernel build failed on

tree:   git://git.kernel.org/pub/scm/linux/kernel/git/ohad/remoteproc.git for-next
head:   bec109a430e8c67bae1743f7e71898283234a77f
commit: ec4d02d9180f407c41f8310a13b34e473c671fbb [6/9] remoteproc: Add STE modem driver
config: i386-randconfig-b102 (attached as .config)

It should be an old bug. The commit happen to be the one to trigger
the errors because it selects CONFIG_EMOTEPROC.

All error/warnings:

drivers/built-in.o: In function `rproc_virtio_finalize_features':
remoteproc_virtio.c:(.text+0x238e7e): undefined reference to `vring_transport_features'
drivers/built-in.o: In function `rproc_virtio_del_vqs':
remoteproc_virtio.c:(.text+0x238ebe): undefined reference to `vring_del_virtqueue'
drivers/built-in.o: In function `rproc_virtio_find_vqs':
remoteproc_virtio.c:(.text+0x238f9b): undefined reference to `vring_new_virtqueue'
drivers/built-in.o: In function `rproc_vq_interrupt':
(.text+0x239077): undefined reference to `vring_interrupt'
drivers/built-in.o: In function `rproc_add_virtio_dev':
(.text+0x2390bd): undefined reference to `register_virtio_device'
drivers/built-in.o: In function `rproc_remove_virtio_dev':
(.text+0x23911a): undefined reference to `unregister_virtio_device'

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0-DAY kernel build testing backend         Open Source Technology Centre
Fengguang Wu, Yuanhan Liu                              Intel Corporation