Messages in this thread | | | Subject | Re: [PATCH v2] libata: add support for NCQ commands for SG interface | From | Mark Lord <> | Date | Mon, 16 Nov 2015 08:47:19 -0500 |
| |
On 15-10-27 01:49 AM, vinayak.kale@gmail.com wrote: > From: Vinayak Kale <vinayak.kale@seagate.com> > > This patch is needed to make NCQ commands with FPDMA protocol value > (eg READ/WRITE FPDMA) work over SCSI Generic (SG) interface. .. > + /* For NCQ commands with FPDMA protocol, copy the tag value */ > + if (tf->protocol == ATA_PROT_NCQ) > + tf->nsect = qc->tag << 3; > +
What prevents the qc-tag value here from conflicting with in-flight I/O using the exact same qc-tag ??
| |