linux-kernel - [PATCH 0/4] usb: typec: ucsi: revert broken buffer management

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20251222152204.2846-1-johan@kernel.org>
Date: Mon, 22 Dec 2025 16:22:00 +0100
From: Johan Hovold <johan@...nel.org>
To: Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Pooja Katiyar <pooja.katiyar@...el.com>,
	Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>,
	linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Johan Hovold <johan@...nel.org>
Subject: [PATCH 0/4] usb: typec: ucsi: revert broken buffer management

The new buffer management code has not been tested or reviewed properly
and breaks boot of machines like the Lenovo ThinkPad X13s.

Fixing this will require designing a proper interface for managing these
transactions, something which most likely involves reverting most of the
offending commit anyway.
	    
Revert the broken code to fix the regression and let Intel come up with
a properly tested implementation for a later kernel.

Johan


Johan Hovold (4):
  Revert "usb: typec: ucsi: Add support for SET_PDOS command"
  Revert "usb: typec: ucsi: Enable debugfs for message_out data
    structure"
  Revert "usb: typec: ucsi: Add support for message out data structure"
  Revert "usb: typec: ucsi: Update UCSI structure to have message in and
    message out fields"

 drivers/usb/typec/ucsi/cros_ec_ucsi.c   |   5 +-
 drivers/usb/typec/ucsi/debugfs.c        |  36 +-------
 drivers/usb/typec/ucsi/displayport.c    |  11 +--
 drivers/usb/typec/ucsi/ucsi.c           | 118 ++++++++----------------
 drivers/usb/typec/ucsi/ucsi.h           |  22 ++---
 drivers/usb/typec/ucsi/ucsi_acpi.c      |  25 +----
 drivers/usb/typec/ucsi/ucsi_ccg.c       |  11 ++-
 drivers/usb/typec/ucsi/ucsi_yoga_c630.c |  15 +--
 8 files changed, 71 insertions(+), 172 deletions(-)

-- 
2.51.2