linux-kernel - 2.6.25-rc6: CONFIG_USB

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Date:	Fri, 6 Jun 2008 11:25:46 +0200
From:	Pavel Machek <pavel@...e.cz>
To:	stern@...land.harvard.edu, gregkh@...e.de,
	Andrew Morton <akpm@...l.org>,
	kernel list <linux-kernel@...r.kernel.org>
Cc:	Oliver Neukum <oliver@...kum.org>
Subject: 2.6.25-rc6: CONFIG_USB_PERSIST forced on

Hi!

In 2.6.26-rc5, 

-config USB_PERSIST
-       bool "USB device persistence during system suspend (DANGEROUS)"

is now on. Given that it was previously marked "DANGEROUS", that seems
quite a change to me.

-
-               WARNING: This option can be dangerous!
-
-         If a USB device is replaced by another of the same type while
-         the system is asleep, there's a good chance the kernel won't
-         detect the change.  Likewise if the media in a USB storage
-         device is replaced.  When this happens it's almost certain to
-         cause data corruption and maybe even crash your system.
-
-         If you are unsure, say N here.

Besides, it seems to have broken usblp hibernation support, and maybe
other devices that does not have reset_resume() present. (Big thanks
for Oliver for doing investigation).

[Or is it that now USB_PERSIST is conditional on /sys fs setting, so
while setting it on individual device is dangerous, it is still N by
default? Changelog does not tell me...?]

Commit is:

USB: remove CONFIG_USB_PERSIST setting

This patch (as1047) removes the USB_PERSIST Kconfig option, enabling
it permanently.  It also prevents the power/persist attribute from
being created for hub devices; there's no point in having it since
USB-PERSIST is always turned on for hubs.

Signed-off-by: Alan Stern <stern@...land.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

								Pavel
---
commit feccc30d90155bcbc937f87643182a43d25873eb
tree 96394e24075a885f1a8bb3e53203f8397e78ea46
parent 5e6effaed6da94e727cd45f945ad2489af8570b3
author Alan Stern <stern@...land.harvard.edu> Mon, 03 Mar 2008 15:15:59 -0500
committer Greg Kroah-Hartman <gregkh@...e.de> Thu, 24 Apr 2008 21:16:32 -0700



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