[SCSI] lpfc : Correct queue tag handling

This patch corrects the lpfc tag handling issue identified by Hannes Reinecke
http://marc.info/?l=linux-scsi@m=119270235628850&w=2

The basis for this patch originated from Hajime Kai. Thank You Hajime.

Signed-off-by: hajime-kai@soft.fujitsu.com
Signed-off-by: James Smart <James.Smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c
index c075556..4e46045 100644 (file)
--- a/drivers/scsi/lpfc/lpfc_scsi.c
+++ b/drivers/scsi/lpfc/lpfc_scsi.c
@@ -682,6 +682,7 @@ lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd,
        IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
        struct lpfc_iocbq *piocbq = &(lpfc_cmd->cur_iocbq);
        int datadir = scsi_cmnd->sc_data_direction;
+       char tag[2];
 
        lpfc_cmd->fcp_rsp->rspSnsLen = 0;
        /* clear task management bits */
@@ -692,8 +693,8 @@ lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd,
 
        memcpy(&fcp_cmnd->fcpCdb[0], scsi_cmnd->cmnd, 16);
 
-       if (scsi_cmnd->device->tagged_supported) {
-               switch (scsi_cmnd->tag) {
+       if (scsi_populate_tag_msg(scsi_cmnd, tag)) {
+               switch (tag[0]) {
                case HEAD_OF_QUEUE_TAG:
                        fcp_cmnd->fcpCntl1 = HEAD_OF_Q;
                        break;