Subject: Re: linux-next: Fixes tag needs some work in the powerpc tree

From: Michael Ellerman <[email-masked]>
Date: Wed, 07 Oct 2020 13:39:56 +1100

Stephen Rothwell <[email-masked]> writes:
> Hi all,
>
> In commit
>
>   3b6c3adbb2fa ("powerpc/perf: Exclude pmc5/6 from the irrelevant PMU group constraints")
>
> Fixes tag
>
>   Fixes: 7ffd948 ("powerpc/perf: factor out power8 pmu functions")
>
> has these problem(s):
>
>   - SHA1 should be at least 12 digits long
>     Can be fixed by setting core.abbrev to 12 (or more) or (for git v2.11
>     or later) just making sure it is not set (or set to "auto").
>
> Since Michael doesn't generally rebase his tree, this is more to be
> remebered for next time.

Yeah, if it was the wrong SHA I would rebase, but not just for a short
SHA.

You can avoid this in future by doing:

$ git config --add core.abbrev 12
$ git config --add pretty.fixes 'Fixes: %h ("%s")'
$ git config --add alias.showfix 'log -1 --format=fixes'

Then you can do:

$ git showfix 7ffd948
Fixes: 7ffd948fae4c ("powerpc/perf: factor out power8 pmu functions")

cheers