Date: Thu, 8 May 2003 14:23:05 +0200 (MET DST)
From: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>
To: Alexander Atanasov <alex@ssi.bg>
cc: Alan Cox <alan@lxorguk.ukuu.org.uk>,
       David Ford <david+powerix@blue-labs.org>,
       <linux-kernel@vger.kernel.org>
Subject: Re: 2.5.69, IDE problems
In-Reply-To: <Pine.LNX.4.21.0305081147280.20708-100000@mars.zaxl.net>
Message-ID: <Pine.SOL.4.30.0305081421010.12362-100000@mion.elka.pw.edu.pl>
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Hi Alex!

On Thu, 8 May 2003, Alexander Atanasov wrote:

> 	Hello,
>
> On Thu, 8 May 2003, David Ford wrote:
>
> > hda: dma_timer_expiry: dma status == 0x24
> > drivers/ide/ide-io.c:108: spin_lock(drivers/ide/ide.c:c04fb648) already
> > locked by drivers/ide/ide-io.c/948
> > drivers/ide/ide-io.c:990: spin_unlock(drivers/ide/ide.c:c04fb648) not locked
> > hda: lost interrupt
> > hda: dma_intr: bad DMA status (dma_stat=30)
> > hda: dma_intr: status=0x50 { DriveReady SeekComplete }
> >
> > hda: dma_timer_expiry: dma status == 0x24
> > drivers/ide/ide-io.c:108: spin_lock(drivers/ide/ide.c:c04fb648) already
> > locked by drivers/ide/ide-io.c/948
> > drivers/ide/ide-io.c:990: spin_unlock(drivers/ide/ide.c:c04fb648) not locked
> > hda: lost interrupt
> > hda: dma_intr: bad DMA status (dma_stat=30)
> > hda: dma_intr: status=0x50 { DriveReady SeekComplete }
>
> 	known problem, patch sent to alan some time ago(may be i should
> resync/resend?) for this dma_timer_expiry have several problems:

Please resync with 2.5, put some nice comment and resend :-).

--
Bartlomiej

> calls DRIVER(drive)->error - the one above, it's called with lock from
> ide_timer_expiry
> calls ide_dma_end - the reason for called while not waiting messages,
> it's called again in ide_timer_expiry
>
> there is one more locking problem known to me - HDIO_DRIVE_RESET,
> but can not find out how to fix it properly.
>
> --
> have fun,
> alex

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