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