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Message-ID: <20091217083046.GD2121@bicker>
Date: Thu, 17 Dec 2009 10:30:46 +0200
From: Dan Carpenter <error27@...il.com>
To: Mark Hounschell <markh@...pro.net>
Cc: linux-kernel@...r.kernel.org
Subject: Re: Unable to format or use floppies since 2.6.28
On Thu, Dec 10, 2009 at 02:46:15PM -0500, Mark Hounschell wrote:
> I have many boxes. They all do the same thing. Running different
> versions of SuSE, 10.3-11.2. Any kernel at or above 2.6.28 fails to
> fdformat a floppy. These same machines, using the same floppies and
> drives, running kernels older than 2.6.28 work just fine. I googled
> and found other such reports but no solution. I know better than to
> just assume it's a kernel bug but it sure looks like it could be so
> I'm inquiring about it here.
>
I don't know if this is related to your bug, but it's a weirdness in
floppy.c (from 2.6.32-rc8 sorry I suck for being up to date).
drivers/block/floppy.c
2532 size = blk_rq_cur_bytes(current_req);
2533
2534 rq_for_each_segment(bv, current_req, iter) {
2535 if (!remaining)
2536 break;
2537
2538 size = bv->bv_len;
We never use the first size = blk_rq_cur_bytes() assignment.
regards,
dan carpenter
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