Since commit 110dd8f19df5 "[SCSI] libsas: fix scr_read/write users and update the libata documentation" we have been passing pmp=1 and is_cmd=0 to ata_tf_to_fis(). Praveen reports that eSATA attached drives do not discover correctly. His investigation found that the BIOS was passing pmp=0 while Linux was passing pmp=1 and failing to discover the drives. Update libsas to follow the libata example of pulling the pmp setting from the ata_link and correct is_cmd to be 1 since all tf's submitted through ->qc_issue are commands. Presumably libsas lldds do not care about is_cmd as they have sideband mechanisms to perform link management.
http://marc.info/?l=linux-scsi&m=138179681726990&w=2 Cc: [email protected] Cc: [email protected] Cc: Lukasz Dorau <[email protected]> Cc: Maciej Patelczyk <[email protected]> Cc: Dave Jiang <[email protected]> Cc: Xiangliang Yu <[email protected]> Cc: [email protected] Reported-by: Praveen Murali <[email protected]> Tested-by: Praveen Murali <[email protected]> Signed-off-by: Dan Williams <[email protected]> --- drivers/scsi/libsas/sas_ata.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/scsi/libsas/sas_ata.c b/drivers/scsi/libsas/sas_ata.c index 161c98efade9..d0fb99d5da95 100644 --- a/drivers/scsi/libsas/sas_ata.c +++ b/drivers/scsi/libsas/sas_ata.c @@ -211,7 +211,7 @@ static unsigned int sas_ata_qc_issue(struct ata_queued_cmd *qc) qc->tf.nsect = 0; } - ata_tf_to_fis(&qc->tf, 1, 0, (u8*)&task->ata_task.fis); + ata_tf_to_fis(&qc->tf, qc->dev->link->pmp, 1, (u8*)&task->ata_task.fis); task->uldd_task = qc; if (ata_is_atapi(qc->tf.protocol)) { memcpy(task->ata_task.atapi_packet, qc->cdb, qc->dev->cdb_len); -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
