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Commit 7e2b19fb authored by James Smart's avatar James Smart Committed by James Bottomley
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[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: default avatar <hajime-kai@soft.fujitsu.com>
Signed-off-by: default avatarJames Smart <James.Smart@emulex.com>
Signed-off-by: default avatarJames Bottomley <James.Bottomley@HansenPartnership.com>
parent c4e1608e

drivers/scsi/lpfc/lpfc_scsi.c

+3 −2
Original line number Original line Diff line number Diff line
@@ -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;

	IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;

	struct lpfc_iocbq *piocbq = &(lpfc_cmd->cur_iocbq);

	struct lpfc_iocbq *piocbq = &(lpfc_cmd->cur_iocbq);

	int datadir = scsi_cmnd->sc_data_direction;

	int datadir = scsi_cmnd->sc_data_direction;

	char tag[2];





	lpfc_cmd->fcp_rsp->rspSnsLen = 0;

	lpfc_cmd->fcp_rsp->rspSnsLen = 0;

	/* clear task management bits */

	/* 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);

	memcpy(&fcp_cmnd->fcpCdb[0], scsi_cmnd->cmnd, 16);





	if (scsi_cmnd->device->tagged_supported) {

	if (scsi_populate_tag_msg(scsi_cmnd, tag)) {

		switch (scsi_cmnd->tag) {

		switch (tag[0]) {

		case HEAD_OF_QUEUE_TAG:

		case HEAD_OF_QUEUE_TAG:

			fcp_cmnd->fcpCntl1 = HEAD_OF_Q;

			fcp_cmnd->fcpCntl1 = HEAD_OF_Q;

			break;

			break;