From: Borislav Petkov <bp@alien8.de>
To: Mikael Pettersson <mikpe@it.uu.se>
Cc: Adko Branil <adkobranil@yahoo.com>,
Jeff Garzik <jgarzik@pobox.com>,
linux-ide <linux-ide@vger.kernel.org>,
lkml <linux-kernel@vger.kernel.org>
Subject: Re: HDD problem, software bug, bios bug, or hardware ?
Date: Mon, 10 Sep 2012 11:17:32 +0200 [thread overview]
Message-ID: <20120910091732.GB4431@liondog.tnic> (raw)
In-Reply-To: <20547.48101.900727.735398@pilspetsen.it.uu.se>
On Sun, Sep 02, 2012 at 10:04:53PM +0200, Mikael Pettersson wrote:
> pdc_hard_reset_port needs to serialize because hard reset has to flip
> a port-specific bit in a controller register that's shared by all
> ports, so it takes the host lock. But now an interrupt occurs during
> the hard reset, and pdc_interrupt also has to take the host lock. (I
> don't know why the interrupt occurs, hotplug events are supposed to
> have been masked by ->freeze before ->hardreset. It might come from a
> different device, my test machine has multiple ATA controllers from
> different vendors, and some of them do share IRQ.)
This sounds very fishy - could it be the hardware raising a spurious IRQ
or something although it shouldn't?
Thanks.
--
Regards/Gruss,
Boris.
next prev parent reply other threads:[~2012-09-10 9:17 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-25 13:36 HDD problem, software bug, bios bug, or hardware ? Adko Branil
2012-08-25 17:46 ` Adko Branil
2012-08-26 13:01 ` Borislav Petkov
2012-08-27 17:01 ` Adko Branil
2012-08-27 17:21 ` Felix Miata
2012-08-27 21:59 ` Borislav Petkov
2012-08-29 17:02 ` Adko Branil
2012-08-29 17:31 ` Adko Branil
2012-08-30 10:12 ` Borislav Petkov
[not found] ` <1346259574.81504.YahooMailNeo@web124706.mail.ne1.yahoo.com>
2012-08-30 9:58 ` Borislav Petkov
2012-08-30 10:11 ` Borislav Petkov
2012-08-30 11:10 ` Adko Branil
2012-09-02 20:04 ` Mikael Pettersson
2012-09-03 21:46 ` Adko Branil
2012-09-07 11:32 ` Adko Branil
2012-09-08 16:30 ` Mikael Pettersson
2012-09-08 17:22 ` Adko Branil
2012-09-11 13:38 ` Adko Branil
2012-09-10 9:15 ` Borislav Petkov
2012-09-10 9:17 ` Borislav Petkov [this message]
-- strict thread matches above, loose matches on Subject: below --
2012-08-25 1:31 Adko Branil
2012-08-25 11:33 ` Borislav Petkov
2012-08-27 7:50 ` Rafael J. Wysocki
2012-09-01 12:45 ` Dan Merillat
2012-09-02 7:24 ` Borislav Petkov
2012-09-03 0:38 ` Dan Merillat
2012-09-10 20:51 ` Borislav Petkov
2012-09-10 21:29 ` Dan Merillat
2012-09-10 21:59 ` Borislav Petkov
2012-09-15 1:34 ` Dan Merillat
2012-09-15 10:34 ` Borislav Petkov
2012-08-25 0:54 Adko Branil
2012-08-25 2:58 ` Felix Miata
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