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udmabuf: add MEMFD_CREATE dependency

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udmabuf builds without it, but if userspace can not create memfd
handles in the first place it is rather pointless to include it,
except for test builds.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20180911134216.9760-7-kraxel@redhat.com
This commit is contained in:
Gerd Hoffmann 2018-09-11 15:42:09 +02:00
parent dc254553f2
commit 68d2f70efe
1 changed files with 1 additions and 0 deletions
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drivers/dma-buf/Kconfig
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@ -34,6 +34,7 @@ config UDMABUF
bool "userspace dmabuf misc driver" bool "userspace dmabuf misc driver"
default n default n
depends on DMA_SHARED_BUFFER depends on DMA_SHARED_BUFFER
depends on MEMFD_CREATE || COMPILE_TEST
help help
A driver to let userspace turn memfd regions into dma-bufs. A driver to let userspace turn memfd regions into dma-bufs.
Qemu can use this to create host dmabufs for guest framebuffers. Qemu can use this to create host dmabufs for guest framebuffers.