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SubjectRe: Droid 4 regression in 5.5-rc1, armsoc-soc tree
Hi!

> > > > > 5.4-based kernel works ok on my droid 4.
> > > > >
> > > > > 5.5-rc3 based kernel has problems; it reboots when I try to kexec it.
> > > > >
> > > > > Vanilla 5.5-rc3 reboots, too.
> > > > >
> > > > > If you have any ideas, let me know.
> > > >
> > > > I managed to get partial serial dump. This should be 5.5-rc3: And then
> > > > a bit better serial dump (below). But it is silent for few seconds,
> > > > and then it restarts...
> > >
> > > If spi or regulators have problems, nothing will really work..
> >
> > arm-soc merge seems to be responsible:
> >
> > bad 38206c24ab09b4f4c2a57de5c1af0bb2e69cf5b6 Merge tag 'armsoc-soc' of
> > good d9e48dc2a71a836f17d1febbedb31470f957edb4 Merge tag
> >

I ended up with this:

pavel@amd:/data/l/k$ git bisect log
# bad: [738d2902773e30939a982c8df7a7f94293659810] Merge
# git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
# good: [219d54332a09e8d8741c1e1982f5eae56099de85] Linux 5.4
git bisect start '738d2902773e' '219d54332a09'
# bad: [46cf053efec6a3a5f343fead837777efe8252a46] Linux 5.5-rc3
git bisect bad 46cf053efec6a3a5f343fead837777efe8252a46
# bad: [e42617b825f8073569da76dc4510bfa019b1c35a] Linux 5.5-rc1
git bisect bad e42617b825f8073569da76dc4510bfa019b1c35a
# good: [9a3d7fd275be4559277667228902824165153c80] Merge tag
# 'driver-core-5.5-rc1' of
# git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
git bisect good 9a3d7fd275be4559277667228902824165153c80
# good: [0b4295b5e2b9b42f3f3096496fe4775b656c9ba6] io_uring: fix a typo
# in a comment
git bisect good 0b4295b5e2b9b42f3f3096496fe4775b656c9ba6
# good: [056df578c2dcac1e624254567f5df5ddaa223234] Merge tag
# 'arc-5.5-rc1' of
# git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc
git bisect good 056df578c2dcac1e624254567f5df5ddaa223234
# bad: [25cfb0c7de3f14e283a43dcd6de903657f9f98c7] Merge branch
# 'for-next' of
# git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
git bisect bad 25cfb0c7de3f14e283a43dcd6de903657f9f98c7
# bad: [38206c24ab09b4f4c2a57de5c1af0bb2e69cf5b6] Merge tag 'armsoc-soc'
# of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
git bisect bad 38206c24ab09b4f4c2a57de5c1af0bb2e69cf5b6
# good: [d9e48dc2a71a836f17d1febbedb31470f957edb4] Merge tag
# 'pwm/for-5.5-rc1' of
# git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm
git bisect good d9e48dc2a71a836f17d1febbedb31470f957edb4
# good: [cd4744645959ebfc97e4b0c676006d2d76d34f25] Merge tag
# 'omap-for-v5.5/soc-signed' of
# git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into
# arm/soc
git bisect good cd4744645959ebfc97e4b0c676006d2d76d34f25
# good: [3166c3dd4c87d118cbf66f827f4b41765a0b1ba6] Merge tag
# 'samsung-soc-5.5' of
# https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into
# arm/soc
git bisect good 3166c3dd4c87d118cbf66f827f4b41765a0b1ba6
# good: [0f3dac611060058524c68dadcc0ddaf923c84d1c] Merge tag
# 'imx-soc-5.5' of
# git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into
# arm/soc
git bisect good 0f3dac611060058524c68dadcc0ddaf923c84d1c
# good: [7b6560b4bc623dd1344de32404fd5a901cd1b28e] OMAP2: fixup doc
# comments in omap_device
git bisect good 7b6560b4bc623dd1344de32404fd5a901cd1b28e
# good: [82b711c251c628bf48f4043e42dab8488d624247] Merge tag
# 'omap-for-v5.5/soc-late-signed' of
# git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into
# arm/soc
git bisect good 82b711c251c628bf48f4043e42dab8488d624247
# good: [ab818f0999dc73af3f966194d087e9f6650f939f] Merge tag
# 'omap-for-v5.5/maintainers-signed' of
# git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into
# arm/soc
git bisect good ab818f0999dc73af3f966194d087e9f6650f939f
# first bad commit: [38206c24ab09b4f4c2a57de5c1af0bb2e69cf5b6] Merge tag
# 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

...and am not sure how to interpret the result, or what to do next :(.

Pavel

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