From: Alan Stern <stern@rowland.harvard.edu>
Date: Mon, 18 Sep 2006 20:28:06 +0000 (-0400)
Subject: Driver core: Don't call put methods while holding a spinlock
X-Git-Tag: v2.6.19-rc1~1078^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7e9f4b2d3e21e87c26025810413ef1592834e63b;p=pandora-kernel.git

Driver core: Don't call put methods while holding a spinlock

The klist utility routines currently call _put methods while holding a
spinlock.  This is of course illegal; a put routine could try to
unregister a device and hence need to sleep.

No problems have arisen until now because in many cases klist removals
were done synchronously, so the _put methods were never actually used.
In other cases we may simply have been lucky.

This patch (as784) reworks the klist routines so that _put methods are
called only _after_ the klist's spinlock has been released.

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