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Date:   Thu, 5 Apr 2018 09:14:15 +0100
From:   Sitsofe Wheeler <sitsofe@...il.com>
To:     Tejun Heo <tj@...nel.org>
Cc:     Jens Axboe <axboe@...nel.dk>, linux-kernel@...r.kernel.org,
        linux-block@...r.kernel.org,
        Stefan Haberland <sth@...ux.vnet.ibm.com>,
        Jan Hoeppner <hoeppner@...ux.vnet.ibm.com>,
        Bart Van Assche <Bart.VanAssche@....com>
Subject: Re: [BISECTED][REGRESSION] Hang while booting EeePC 900

On 2 April 2018 at 21:29, Tejun Heo <tj@...nel.org> wrote:
> Hello, Sitsofe.
>
> Can you see whether the following patch makes any difference?
>
> Thanks.
>
> diff --git a/block/blk-timeout.c b/block/blk-timeout.c
> index a05e367..f0e6e41 100644
> --- a/block/blk-timeout.c
> +++ b/block/blk-timeout.c
> @@ -165,7 +165,7 @@ void blk_abort_request(struct request *req)
>                  * No need for fancy synchronizations.
>                  */
>                 blk_rq_set_deadline(req, jiffies);
> -               mod_timer(&req->q->timeout, 0);
> +               kblockd_schedule_work(&req->q->timeout_work);
>         } else {
>                 if (blk_mark_rq_complete(req))
>                         return;

Just out of interest, does the fact that an abort occurs mean that the
hardware is somehow broken or badly behaved?

-- 
Sitsofe | http://sucs.org/~sits/

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