[Bug 212955] Possible kernel regression USB2 (not USB3) port EDIROL UA-101 (in USB 1.1 mode, not USB2) error -110

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https://bugzilla.kernel.org/show_bug.cgi?id=212955

--- Comment #19 from Lucas Endres (jaffa225man@gmail.com) ---
(In reply to Lucas Endres from comment #18)
> (In reply to Lucas Endres from comment #15)
> > Tonight, before I attempt anything that major, I'll build the commit just
> > before 51e6f07cb12e to see if it's working (although it probably already
> was
> > tested during one of the aforesaid bisect iterations).
> > 
> > Hopefully, that will be enough to prove that the glitch-causing commit was
> > 51e6f07cb12e, or prove to me that you're right and I'll have to spend many
> > more days at this.
> 
> Well, thanks Alan, you've been proven correct, as neither it or its prior
> commit worked.  So I'm back to the drawing board, but have begun with my
> closest logged and tested commits.  I've only just begun to compile the
> first bisect suggestion, although it hasn't started to estimate how many
> commits I'll need to test yet:
> 
> git bisect reset
> Updating files: 100% (12637/12637), done.
> Previous HEAD position was bf05bf16c7 Linux 5.12-rc8
> Switched to branch 'master'
> Your branch is up to date with 'origin/master'.
> git bisect start
> git bisect bad b208108638c4bd3215792415944467c36f5dfd97 # May 3rd
> git bisect good 698f99ed5e06946764c3be035ce9d62a2691e08c # April 29
> Bisecting: a merge base must be tested
> [6daa755f813e6aa0bcc97e352666e072b1baac25] Merge tag 's390-5.13-1' of
> git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux # April 27 so prior
> to known-good for to test a merge base?...  I'm building it anyway.

Sorry to bother you over something so trivial, but the last "bad" point I chose
turned out good in the end after the couple compilations I needed to test, so I
have a re-pretested truly bad one that will be a much longer journey, but I
hope will lead to the ultimate truth:


git bisect reset
Previous HEAD position was 51e6f07cb1 Merge tag 'm68knommu-for-v5.13' of
git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
Switched to branch 'master'
Your branch is up to date with 'origin/master'.
git bisect start
git bisect good b208108638c4bd3215792415944467c36f5dfd97
git bisect bad 51e6f07cb12e50bfc71181bd08bad5f0a9b5e9e2
Bisecting: a merge base must be tested
[6daa755f813e6aa0bcc97e352666e072b1baac25] Merge tag 's390-5.13-1' of
git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

That already definitely tested good during the previous stint, so:
git bisect good
Bisecting: 5295 revisions left to test after this (roughly 12 steps)

git bisect good
Bisecting: 2647 revisions left to test after this (roughly 11 steps)
[2342eb1afe00586a018536c4bf9e04d7aa4bf63e] llc2: Remove redundant assignment to
rc

This is what I'm currently building, but I'll get back to you when I'm finally
finished again, this time with even the suspect and prior commit tested.

Thanks!

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