linux-kernel - Changes to sysfs PM layer break userspace

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: <20061219185223.GA13256@srcf.ucam.org>
Date:	Tue, 19 Dec 2006 18:52:23 +0000
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	linux-kernel@...r.kernel.org
Cc:	david-b@...bell.net, gregkh@...e.de
Subject: Changes to sysfs PM layer break userspace

Commit 047bda36150d11422b2c7bacca1df324c909c0b3 broke userspace. 
Previously, /sys/bus/pci/devices/foo/power/state could have values 
echoed into it for triggering suspend/resume calls in the driver. The 
breakage is handily mentioned in the comment:

"Devices with bus.suspend_late(), or bus.resume_early() methods fail 
this operation; those methods couldn't be called."

but there's no mention of what previously working code is supposed to do 
now. That's the second time in the past year or so that this interface 
has been broken - can we have it working again, please, especially as 
there doesn't appear to be an alternative yet?

-- 
Matthew Garrett | mjg59@...f.ucam.org
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/