Messages in this thread | | | Date | Thu, 22 Nov 2007 09:48:47 +0900 | From | Tejun Heo <> | Subject | Re: [PATCH 1/2] sata_nv: don't use legacy DMA in ADMA mode |
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Robert Hancock wrote: > Tejun Heo wrote: >> Tejun Heo wrote: >>> If so, can you please add that switching into register mode is okay as >>> long as there's no other ADMA commands in flight and add >>> WARN_ON((qc->flags & ATA_QCFLAG_RESULT_TF) && link->sactive)? >> >> More accurately, link->sactive test can be substituted with >> (ap->qc_allocated & ~(1 << qc->tag)). > > Unfortunately we only get the ata_port and ata_taskfile in the tf_read > callback, so I'm not sure if we can do the equivalent of the qc->flags & > ATA_QCFLAG_RESULT_TF test (i.e. distinguishing between the > error-handling case where we care if we abort outstanding commands and > the normal case with a RESULT_TF command where we do)..
You can test it in ->qc_issue(), no?
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