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Robert Mader's avatar
Robert Mader authored
In upstream discussions regarding dmabuf allocation in was concluded
that using udmabuf, which only uses virtual memory, is the better
option for the time being. Libcamera gained support for that with
version 0.3.1 and it was confirmed that devices currently using the
libcamera softwareISP can sample from them, notably:
 - Librem5
 - PinePhone
 - Pixel 3a

Thus let's follow upstream and allow access to that by default - and
remove access to /dev/dma_heap again.

See also: https://github.com/systemd/systemd/pull/33738
[ci:skip-build]: already built successfully in CI
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