linux-kernel - Re: [PATCH v2] Revert "usb: typec: tcpm: fix cc role at port reset"

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Message-ID: <ZcVPHtPt2Dppe_9q@finisterre.sirena.org.uk>
Date: Thu, 8 Feb 2024 22:01:02 +0000
From: Mark Brown <broonie@...nel.org>
To: Badhri Jagan Sridharan <badhri@...gle.com>
Cc: gregkh@...uxfoundation.org, linux@...ck-us.net,
	heikki.krogerus@...ux.intel.com, kyletso@...gle.com,
	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
	rdbabiera@...gle.com, amitsd@...gle.com, stable@...r.kernel.org,
	frank.wang@...k-chips.com, regressions@...mhuis.info
Subject: Re: [PATCH v2] Revert "usb: typec: tcpm: fix cc role at port reset"

On Wed, Jan 17, 2024 at 11:47:42AM +0000, Badhri Jagan Sridharan wrote:
> This reverts commit 1e35f074399dece73d5df11847d4a0d7a6f49434.
> 
> Given that ERROR_RECOVERY calls into PORT_RESET for Hi-Zing
> the CC pins, setting CC pins to default state during PORT_RESET
> breaks error recovery.

Between -rc2 and -rc3 I started seeing boot issues in mainline on
rk3399-roc-pc running arm64 defconfig, a bisection identified this patch
as having broken things.  The issues manifest as a hang while loading
modules from the initd, you can see a full boot log at:

   https://lava.sirena.org.uk/scheduler/job/558789

which shows a bunch of video drivers loading at the end of the log but I
suspect that's not related the actual failure.  A successful boot can be
seen here:

   https://lava.sirena.org.uk/scheduler/job/559222

I do note that the board is powered by USB PD, I've got it connected to
a PD power supply which seems potentially relevant to the commit.  The
board had been working for a long time, at least as far as boot to
initrd goes.

Full bisect log:

git bisect start
# status: waiting for both good and bad commits
# bad: [54be6c6c5ae8e0d93a6c4641cb7528eb0b6ba478] Linux 6.8-rc3
git bisect bad 54be6c6c5ae8e0d93a6c4641cb7528eb0b6ba478
# status: waiting for good commit(s), bad commit known
# good: [41bccc98fb7931d63d03f326a746ac4d429c1dd3] Linux 6.8-rc2
git bisect good 41bccc98fb7931d63d03f326a746ac4d429c1dd3
# good: [4f18d3fd2975c943be91522d86257806374881b9] Merge tag 'iommu-fixes-v6.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
git bisect good 4f18d3fd2975c943be91522d86257806374881b9
# good: [6b89b6af459fdd6f2741d0c2e33c67af8193697e] Merge tag 'gfs2-v6.8-rc2-revert' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2
git bisect good 6b89b6af459fdd6f2741d0c2e33c67af8193697e
# good: [bdda52cc664caaf030fdaf51dd715ef5d1f14a26] Merge tag 'i2c-for-6.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
git bisect good bdda52cc664caaf030fdaf51dd715ef5d1f14a26
# bad: [0214960971939697f1499239398874cfc3a52d69] Merge tag 'tty-6.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
git bisect bad 0214960971939697f1499239398874cfc3a52d69
# bad: [3caf2b2ad7334ef35f55b95f3e1b138c6f77b368] usb: ulpi: Fix debugfs directory leak
git bisect bad 3caf2b2ad7334ef35f55b95f3e1b138c6f77b368
# good: [7c4650ded49e5b88929ecbbb631efb8b0838e811] xhci: handle isoc Babble and Buffer Overrun events properly
git bisect good 7c4650ded49e5b88929ecbbb631efb8b0838e811
# good: [cc509b6a47e7c8998d9e41c273191299d5d9d631] usb: chipidea: core: handle power lost in workqueue
git bisect good cc509b6a47e7c8998d9e41c273191299d5d9d631
# good: [b2d2d7ea0dd09802cf5a0545bf54d8ad8987d20c] usb: f_mass_storage: forbid async queue when shutdown happen
git bisect good b2d2d7ea0dd09802cf5a0545bf54d8ad8987d20c
# bad: [b717dfbf73e842d15174699fe2c6ee4fdde8aa1f] Revert "usb: typec: tcpm: fix cc role at port reset"
git bisect bad b717dfbf73e842d15174699fe2c6ee4fdde8aa1f
# good: [032178972f8e992b90f9794a13265fec8c8314b0] usb: gadget: pch_udc: fix an Excess kernel-doc warning
git bisect good 032178972f8e992b90f9794a13265fec8c8314b0
# first bad commit: [b717dfbf73e842d15174699fe2c6ee4fdde8aa1f] Revert "usb: typec: tcpm: fix cc role at port reset"

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