Re: [REPOST PATCH] sata_promise: use TF interface for polling NODATA commands

[Jeff Garzik <jeff@garzik.org>]

On Wed, Jun 06, 2007 at 07:21:22PM +0900, Tejun Heo wrote:
> sata_promise uses two different command modes - packet and TF.  Packet
> mode is intelligent low-overhead mode while TF is the same old
> taskfile interface.  As with other advanced interface (ahci/sil24),
> ATA_TFLAG_POLLING has no effect in packet mode.  However, PIO commands
> are issued using TF interface in polling mode, so pdc_interrupt()
> considers interrupts spurious if ATA_TFLAG_POLLING is set.
> 
> This is broken for polling NODATA commands because command is issued
> using packet mode but the interrupt handler ignores it due to
> ATA_TFLAG_POLLING.  Fix pdc_qc_issue_prot() such that ATA/ATAPI NODATA
> commands are issued using TF interface if ATA_TFLAG_POLLING is set.
> 
> This patch fixes detection failure introduced by polling SETXFERMODE.
> 
> Signed-off-by: Tejun Heo <htejun@gmail.com>
> ---
> David, please verify this patch.  Mikael, does this look okay?  Please
> push this upstream after David and Mikael's ack.
> 
> (This repost is identical to the previous posting but it's now on the
>  correct thread.)

Acked-by: Jeff Garzik <jeff@garzik.org>

Tejun, would you mind pushing this upstream to Linus/Andrew?

I'm travelling this week, and my home firewall doesn't like me.
It is probably easier for you than me.

	Jeff