Re: 2.5.66-bk5 spinlock warnings/errors - Specifically ide-io:109

[Shawn Starr]

I will test this tonight when I get home :-)

On Thu, 3 Apr 2003, Manfred Spraul wrote:

> Shawn wrote:
>
> >>List:     linux-kernel
> >>Subject:  2.5.66-bk5 spinlock warnings/errors
> >From:     Narayan Desai <desai () mcs ! anl ! gov>
> >>Date:     2003-04-02 4:01:02
> >
> >>hda: dma_timer_expiry: dma status == 0x24
> >>drivers/ide/ide-io.c:109: spin_lock(drivers/ide/ide.c:c037abe8) already
> >>locked by drivers/ide/ide-io.c/948 drivers/ide/ide-io.c:990:
> >>spin_unlock(drivers/ide/ide.c:c037abe8) not locked
> >>hda: lost interrupt
> >>hda: dma_intr: bad DMA status (dma_stat=30)
> >>hda: dma_intr: status=0x50 { DriveReady SeekComplete }
> >
> >I had this problem last night while making a huge debian package (tar.bz2
> >stage). It occured once.
> >
> >
> The attached patch should fix the problem:
> the dma_timer_expiry handler calls HWGROUP(drive)->handler in the wrong
> context. Instead of calling ->handler directly, the ->expiry handler
> must inform the caller that ->handler must be called, and then the
> caller must do some setup before calling ->handler.
>
> --
>     Manfred
>