• Olof Johansson's avatar
    firmware: arm_scpi: Revert updates made during v4.15 merge window · 81faa556
    Olof Johansson authored
    Revert "Merge tag 'scpi-updates-4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into next/drivers"
    
    Paraphrased from email from Kevin Hilman:
    
    Revert ARM SCPI changes since v4.14.
    
    Untested changes caused regressions in SCPI and CPUfreq/DVFS failures
    on most Amlogic SoCs.  Changes reverted for v4.15 so they can be better
    reviewed and tested.
    
    These ARM SCPI changes caused SCPI regressions resulting in CPUfreq
    failures on most Amlogic SoCs (found by kernelci.org.)
    
    Unfortunately, this was not caught in linux-next due to other bugs/panics
    on these platforms masking this problem so we've only found it since
    we've fixed the other issues.
    
    Since we're already in the -rc cycle, I'd prefer to revert to a known
    working state (that of v4.14) rather than finding/reverting a subset,
    which would just lead to another untested state.
    
    These changes can then have some time to be better reviewed and tested
    and resubmitted for v4.16.
    
    Kevin Hilman has tested this revert on the affected Amlogic SoCs and
    verified that we're back to the previous (working) condition.
    
    This reverts commit 6710acf2, reversing
    changes made to 4b367f2e.
    Reported-by: default avatarKevin Hilman <khilman@baylibre.com>
    Signed-off-by: default avatarOlof Johansson <olof@lixom.net>
    81faa556
arm_scpi.c 27.7 KB