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samples: mbochs: add DMA_SHARED_BUFFER dependency 

The new bochs vbe sample fails to link when DMA_SHARED_BUFFER is
disabled:

ERROR: "dma_buf_export" [samples/vfio-mdev/mbochs.ko] undefined!
ERROR: "dma_buf_fd" [samples/vfio-mdev/mbochs.ko] undefined!

This uses a 'select' statement to enable that framework, like all
other users do.

Fixes: a5e6e6505f ("sample: vfio bochs vbe display (host device for bochs-drm)")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Arnd Bergmann 2018-05-30 23:37:31 +02:00 committed by Alex Williamson
parent 415eb9fc0e
commit c1abca96b2
1 changed files with 1 additions and 0 deletions
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samples/Kconfig
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@ -135,6 +135,7 @@ config SAMPLE_VFIO_MDEV_MDPY_FB
config SAMPLE_VFIO_MDEV_MBOCHS
tristate "Build VFIO mdpy example mediated device sample code -- loadable modules only"
depends on VFIO_MDEV_DEVICE && m
select DMA_SHARED_BUFFER
help
Build a virtual display sample driver for use as a VFIO
mediated device. It supports the region display interface