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Date: Wed, 25 May 2011 22:54:21 +0200
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Subject: Re: [bisected] 2.6.39 breaks floppy
From: Tejun Heo <tj@kernel.org>
To: Jens Axboe <jaxboe@fusionio.com>
Cc: Ondrej Zary <linux@rainbow-software.org>,
        Kernel development list <linux-kernel@vger.kernel.org>
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Hello,

On Wed, May 25, 2011 at 9:37 PM, Jens Axboe <jaxboe@fusionio.com> wrote:
>> Bisected it to 9fd097b14918875bd6f125ed699d7bbbba5893ee
>> (block: unexport DISK_EVENT_MEDIA_CHANGE for legacy/fringe drivers)
>>
>> Adding the removed line back to floppy.c fixes the problem.

It's the same one as the following.  Patch posted.  It's caused by
genhd->ev not allocated when ->events | async_events is empty.

  https://bugzilla.kernel.org/show_bug.cgi?id=35832

Will soon post a patch.

Thanks.

-- 
tejun