From: Jeff Garzik <jeff@garzik.org>
To: Tejun Heo <tj@kernel.org>
Cc: IDE/ATA development list <linux-ide@vger.kernel.org>
Subject: Re: [PATCH #upstraem-fixes] ata_piix: detect and clear spurious IRQs
Date: Tue, 25 Nov 2008 12:08:12 -0500 [thread overview]
Message-ID: <492C30FC.2090200@garzik.org> (raw)
In-Reply-To: <49263552.8090602@kernel.org>
Tejun Heo wrote:
> The DMA_IRQ bit in the bmdma status register is always set when IDEIRQ
> is asserted allowing spurious IRQ detection. Detect spurious IRQs and
> clear them. This protects ata_piix against nobody-cared which gets
> reported not so rarely.
>
> Signed-off-by: Tejun Heo <tj@kernel.org>
> ---
> drivers/ata/ata_piix.c | 54 ++++++++++++++++++++++++++++++++++++++++++++++++-
> 1 file changed, 53 insertions(+), 1 deletion(-)
It's tough to call this #upstream-fixes material, unfortunately... For
this late into -rc, I am very nervous about changing the ATA interrupt
path for millions of machines.
Jeff
next prev parent reply other threads:[~2008-11-25 17:08 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-21 4:13 [PATCH #upstraem-fixes] ata_piix: detect and clear spurious IRQs Tejun Heo
2008-11-21 10:25 ` Alan Cox
2008-11-21 13:07 ` Tejun Heo
2008-11-25 17:07 ` Jeff Garzik
2008-11-26 2:52 ` Tejun Heo
2008-11-26 10:47 ` Alan Cox
2008-11-26 12:26 ` Sergei Shtylyov
2008-11-26 12:28 ` Sergei Shtylyov
2008-11-26 12:37 ` Sergei Shtylyov
2008-11-26 17:34 ` Jeff Garzik
2008-11-26 17:45 ` Tejun Heo
2008-11-26 18:40 ` Alan Cox
2008-11-26 18:57 ` Tejun Heo
2008-11-28 2:31 ` Tejun Heo
2008-12-04 16:33 ` Mark Lord
2008-12-04 16:35 ` Alan Cox
2008-11-21 16:59 ` Sergei Shtylyov
2008-11-21 17:05 ` Tejun Heo
2008-11-25 17:08 ` Jeff Garzik [this message]
2008-11-25 17:15 ` Alan Cox
2008-11-26 2:45 ` Tejun Heo
2008-11-26 10:33 ` Alan Cox
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