On Mon, 12 May 2008 12:12:16 +0800
Bryan Wu <cooloney@xxxxxxxxxx> wrote:
> From: Sonic Zhang <sonic.zhang@xxxxxxxxxx>
>
> Set ATAPI host state machine to control IDE device terminate sequence.
> Some IDE harddisk may assert terminate sequence in the middle of a
> formal DMA transaction and resume later. Bit DETECT_TERM in ATAPI_CTRL
> register determines whether the ATAPI host state machine or the kernel
> driver should take care of this case.
>
> Signed-off-by: Sonic Zhang <sonic.zhang@xxxxxxxxxx>
> Signed-off-by: Bryan Wu <cooloney@xxxxxxxxxx>
Acked-by: Alan Cox <alan@xxxxxxxxxx>
(but when submitting fix typo "contorl" )
> ---
> drivers/ata/pata_bf54x.c | 5 ++++-
> 1 files changed, 4 insertions(+), 1 deletions(-)
>
> diff --git a/drivers/ata/pata_bf54x.c b/drivers/ata/pata_bf54x.c
> index 9ab8973..5551610 100644
> --- a/drivers/ata/pata_bf54x.c
> +++ b/drivers/ata/pata_bf54x.c
> @@ -911,7 +911,10 @@ static void bfin_bmdma_start(struct ata_queued_cmd *qc)
> /* Reset all transfer count */
> ATAPI_SET_CONTROL(base, ATAPI_GET_CONTROL(base) | TFRCNT_RST);
>
> - /* Set transfer length to buffer len */
> + /* Set ATAPI state machine contorl in terminate sequence */
> + ATAPI_SET_CONTROL(base, ATAPI_GET_CONTROL(base) | END_ON_TERM);
> +
> + /* Set transfer length to buffer len */
> for_each_sg(qc->sg, sg, qc->n_elem, si) {
> ATAPI_SET_XFER_LEN(base, (sg_dma_len(sg) >> 1));
> }
--
--
"Alan, I'm getting a bit worried about you."
-- Linus Torvalds
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