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    SubjectRe: readcd hangs in blk_execute_rq
    > > > > ide-cd: cmd 0x28 timed out
    > > > > hdc: DMA interrupt recovery
    > > > > hdc: lost interrupt
    > > > > hdc: status timeout: status=0xd0 { Busy }
    > > > > hdc: status timeout: error=0x00
    > > > > hdc: DMA disabled
    > > > > hdc: drive not ready for command
    > > > > hdc: ATAPI reset complete

    > > It worked in earlier 2.4 kernels (2.4.18?) with DMA - I don't remember
    > > if it had some reliability problems. Since then, it's no dma. We have 3
    > > such computers here (Intel D816EEA2 mainboard, this specific Sony CDrom)
    > > and they all behave the same.
    >
    > 2.4.x never used dma for this operation. Does 2.6.9 work if you turn off
    > dma first?

    I have not tried this operation before. Reading data disks with DMA
    worked and that's what I have used. I did read the same disk with
    readdisk subcommand on readcd currently, it was successful until the end
    of disk (6xx MB - maybe the end of the disk).

    Will try it with turning DMA off first.

    --
    Meelis Roos (mroos@linux.ee)

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