From: Jeff Garzik <jgarzik@pobox.com>
To: Pat LaVarre <p.lavarre@ieee.org>
Cc: linux-ide@vger.kernel.org
Subject: Re: IRQ re-disabled when SATAPI via CONFIG_BLK_DEV_IDE_SATA
Date: Wed, 18 Aug 2004 01:38:45 -0400 [thread overview]
Message-ID: <4122EB65.9020009@pobox.com> (raw)
In-Reply-To: <1092774469.4599.4.camel@patlinux.iomegacorp.com>
Pat LaVarre wrote:
> Jeff G:
>
> By the way,
>
> I see the following dmesg repeat often, like once per open of the
> device, if I connect SATAPI in 2.6.8.1 via CONFIG_BLK_DEV_IDE_SATA.
>
> kernel: irq 18: nobody cared!
> kernel: [<c010822b>] __report_bad_irq+0x2a/0x8b
> kernel: [<c0108315>] note_interrupt+0x6f/0x9f
> kernel: [<c01086a8>] do_IRQ+0x1d4/0x226
> kernel: [<c0103cbe>] default_idle+0x0/0x2d
> kernel: [<c0106800>] common_interrupt+0x18/0x20
> kernel: [<c0103cbe>] default_idle+0x0/0x2d
> kernel: [<c0103ce8>] default_idle+0x2a/0x2d
> kernel: [<c0103d5c>] cpu_idle+0x37/0x40
> kernel: [<c0451885>] start_kernel+0x1b0/0x201
> kernel: [<c045130a>] unknown_bootoption+0x0/0x16f
> kernel: handlers:
> kernel: [<c0249b12>] (ide_intr+0x0/0x1d1)
> kernel: Disabling IRQ #18
>
> I recognise this "disabling IRQ" message from the history of libata.ko
> development, where I more often saw it once and then immediately a
> kernel crash.
See 'ide_intr' in there? we need to teach the IDE driver about the
ICH5's weird interrupt acknowledgment stuff.
Alternative is to get ATAPI working in libata, then we can do PATA under
libata as well, which resolves this problem.
Jeff
prev parent reply other threads:[~2004-08-18 5:38 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-17 20:27 IRQ re-disabled when SATAPI via CONFIG_BLK_DEV_IDE_SATA Pat LaVarre
2004-08-18 5:38 ` Jeff Garzik [this message]
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