* [bisected] 2.6.39 breaks floppy
@ 2011-05-25 19:16 Ondrej Zary
2011-05-25 19:37 ` Jens Axboe
0 siblings, 1 reply; 3+ messages in thread
From: Ondrej Zary @ 2011-05-25 19:16 UTC (permalink / raw)
To: Tejun Heo; +Cc: Jens Axboe, Kernel development list
Hello,
floppy stopped working in 2.6.39 (confirmed on two machines). 2.6.38 worked
fine.
/dev/fd0 is created but does not work (mdir says: "No such device or address",
mount says "/dev/fd0 is not a valid block device"). dmesg shows no errors:
Floppy drive(s): fd0 is 1.44M
FDC 0 is a post-1991 82077
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.
--
Ondrej Zary
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [bisected] 2.6.39 breaks floppy
2011-05-25 19:16 [bisected] 2.6.39 breaks floppy Ondrej Zary
@ 2011-05-25 19:37 ` Jens Axboe
2011-05-25 20:54 ` Tejun Heo
0 siblings, 1 reply; 3+ messages in thread
From: Jens Axboe @ 2011-05-25 19:37 UTC (permalink / raw)
To: Ondrej Zary; +Cc: Tejun Heo, Kernel development list
On 2011-05-25 21:16, Ondrej Zary wrote:
> Hello,
> floppy stopped working in 2.6.39 (confirmed on two machines). 2.6.38 worked
> fine.
> /dev/fd0 is created but does not work (mdir says: "No such device or address",
> mount says "/dev/fd0 is not a valid block device"). dmesg shows no errors:
>
> Floppy drive(s): fd0 is 1.44M
> FDC 0 is a post-1991 82077
>
> 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.
Tejun?
--
Jens Axboe
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [bisected] 2.6.39 breaks floppy
2011-05-25 19:37 ` Jens Axboe
@ 2011-05-25 20:54 ` Tejun Heo
0 siblings, 0 replies; 3+ messages in thread
From: Tejun Heo @ 2011-05-25 20:54 UTC (permalink / raw)
To: Jens Axboe; +Cc: Ondrej Zary, Kernel development list
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
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2011-05-25 20:54 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2011-05-25 19:16 [bisected] 2.6.39 breaks floppy Ondrej Zary
2011-05-25 19:37 ` Jens Axboe
2011-05-25 20:54 ` Tejun Heo
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox