Commit 5ac40790 authored by Jens Axboe's avatar Jens Axboe Committed by Tejun Heo
Browse files

libata: introduce notion of separate hardware tags 



Rigth now these are the same, but drivers should be using ->hw_tag
for their command setup and issue.

Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
Signed-off-by: default avatarTejun Heo <tj@kernel.org>
parent 804689ad

drivers/ata/libata-core.c

+2 −2
Original line number Diff line number Diff line
@@ -1600,7 +1600,7 @@ unsigned ata_exec_internal_sg(struct ata_device *dev, 


	qc = __ata_qc_from_tag(ap, tag);



	qc->tag = tag;

	qc->tag = qc->hw_tag = tag;

	qc->scsicmd = NULL;

	qc->ap = ap;

	qc->dev = dev;
@@ -5125,7 +5125,7 @@ struct ata_queued_cmd *ata_qc_new_init(struct ata_device *dev, int tag) 
	}



	qc = __ata_qc_from_tag(ap, tag);

	qc->tag = tag;

	qc->tag = qc->hw_tag = tag;

	qc->scsicmd = NULL;

	qc->ap = ap;

	qc->dev = dev;

include/linux/libata.h

+2 −1
Original line number Diff line number Diff line
@@ -637,7 +637,8 @@ struct ata_queued_cmd { 
	u8			cdb[ATAPI_CDB_LEN];



	unsigned long		flags;		/* ATA_QCFLAG_xxx */

	unsigned int		tag;

	unsigned int		tag;		/* libata core tag */

	unsigned int		hw_tag;		/* driver tag */

	unsigned int		n_elem;

	unsigned int		orig_n_elem;