linux-kernel - [PATCH v4 10/10] gpio: TODO: remove the task for the sysfs rework

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

Message-Id: <20250704-gpio-sysfs-chip-export-v4-10-9289d8758243@linaro.org>
Date: Fri, 04 Jul 2025 14:58:57 +0200
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Ahmad Fatoum <a.fatoum@...gutronix.de>, 
 Kent Gibson <warthog618@...il.com>, 
 Jan Lübbe <jlu@...gutronix.de>, 
 Marek Vasut <marex@...x.de>, Geert Uytterhoeven <geert+renesas@...der.be>, 
 Linus Walleij <linus.walleij@...aro.org>, 
 Andy Shevchenko <andriy.shevchenko@...el.com>, 
 Bartosz Golaszewski <brgl@...ev.pl>
Cc: linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: [PATCH v4 10/10] gpio: TODO: remove the task for the sysfs rework

From: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>

Remove the completed task tracking the rework of the sysfs interface and
add a new task to track the removal of the legacy bits and pieces.

Reviewed-by: Linus Walleij <linus.walleij@...aro.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
---
 drivers/gpio/TODO | 14 +++++---------
 1 file changed, 5 insertions(+), 9 deletions(-)

diff --git a/drivers/gpio/TODO b/drivers/gpio/TODO
index ef53892cb44d7c01d100f10f1b805c0aca561b46..7a09a4f58551b51c55938c278a47a04e86ef4106 100644
--- a/drivers/gpio/TODO
+++ b/drivers/gpio/TODO
@@ -188,16 +188,12 @@ remove the old ones and finally rename the new ones back to the old names.
 
 -------------------------------------------------------------------------------
 
-Extend the sysfs ABI to allow exporting lines by their HW offsets
+Remove legacy sysfs features
 
-The need to support the sysfs GPIO class is one of the main obstacles to
-removing the global GPIO numberspace from the kernel. In order to wean users
-off using global numbers from user-space, extend the existing interface with
-new per-gpiochip export/unexport attributes that allow to refer to GPIOs using
-their hardware offsets within the chip.
-
-Encourage users to switch to using them and eventually remove the existing
-global export/unexport attribues.
+We have two parallel per-chip class devices and per-exported-line attribute
+groups in sysfs. One is using the obsolete global GPIO numberspace and the
+second relies on hardware offsets of pins within the chip. Remove the former
+once user-space has switched to using the latter.
 
 -------------------------------------------------------------------------------
 

-- 
2.48.1