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 <[email protected]>
Eeeek... Wrong thread. Please ignore this posting. Will repost. Sorry.
--
tejun
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