[Bug 237463] aacraid(4) doesn't work on powerpc64

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=237463

--- Comment #16 from commit-hook at freebsd.org ---
A commit references this bug:

Author: luporl
Date: Mon Mar  9 19:01:17 UTC 2020
New revision: 358814
URL: https://svnweb.freebsd.org/changeset/base/358814

Log:
  [aacraid] Handle both AIF and SYNC interrupts

  Without this change, if an AIF interrupt comes at the same time a SYNC
  command is finished, the SYNC interrupt will be lost. This happens because
  all interrupt bits (bellbits) are cleared, but only one of them is handled.

  Debugging shows that, (at least) when !sc->msi_enabled and (sc->flags &
  AAC_FLAGS_SYNC_MODE) is true (sync mode), both bits may be set at the same
  time.

  PR:           237463
  Reviewed by:  scottl
  Sponsored by: Eldorado Research Institute (eldorado.org.br)
  Differential Revision:        https://reviews.freebsd.org/D23859

Changes:
  head/sys/dev/aacraid/aacraid.c

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