linux-kernel - Re: Linux v2.6.21-rc3

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Date:	Wed, 07 Mar 2007 18:14:58 +0100
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Jeff Garzik <jeff@...zik.org>
Subject: Re: Linux v2.6.21-rc3

On Wed, 2007-03-07 at 15:22 +0100, Thomas Gleixner wrote:
> On Tue, 2007-03-06 at 20:59 -0800, Linus Torvalds wrote:
> > We've finally hopefully started to put a dent in the regressions, 
> > especially the suspend/resume problems introduced since 2.6.20.
> 
> Still having SATA breakage on resume:
> 
> Caught that one (from screen)
> 
> ATA: abnormal status 0x7F on port 0x000118cf
> irq 21: nobody cared (try booting ......)
> ...
> Disabling IRQ #21
> 
> 
> During normal boot I see the "ATA: abnormal status 0x7F on port
> 0x000118cf" once, but there the system behaves normal

I enabled ATA_DEBUG and hacked it to provide debug output only on
resume. Now the disk resumes and no stale interrupt happens.

Full log at: http://www.tglx.de/private/tglx/sata-2.6.21-rc3.log

Both states are fully reproducible. (DEBUG ON/OFF == GOOD/BAD)

/me continues the libata exploration

	tglx


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