[SCSI] lpfc driver 8.0.30 : fix iocb reuse initialization

IOCB BDE not getting fully initialized during reuse

Symptoms: Driver gets Status 3 and Reason 0x13 on IOCB completions.

Cause: The IOCB bpl.bdeSize and bdeFlags are not getting initialized on reuse.

Fix: Reinitialize these fields in prep_dma each time an IOCB is used.

Signed-off-by: James Smart <James.Smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 6 insertions, 1 deletions

diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c
index 17e4974d4445..7cb1e467734f 100644
--- a/drivers/scsi/lpfc/lpfc_scsi.c
+++ b/drivers/scsi/lpfc/lpfc_scsi.c
@@ -238,6 +238,8 @@ lpfc_scsi_prep_dma_buf(struct lpfc_hba * phba, struct lpfc_scsi_buf * lpfc_cmd)
                 bpl->tus.f.bdeSize = scsi_cmnd->request_bufflen;
                 if (datadir == DMA_TO_DEVICE)
                         bpl->tus.f.bdeFlags = 0;
+                else
+                        bpl->tus.f.bdeFlags = BUFF_USE_RCV;
                 bpl->tus.w = le32_to_cpu(bpl->tus.w);
                 num_bde = 1;
                 bpl++;
@@ -245,8 +247,11 @@ lpfc_scsi_prep_dma_buf(struct lpfc_hba * phba, struct lpfc_scsi_buf * lpfc_cmd)
 
         /*
          * Finish initializing those IOCB fields that are dependent on the
-         * scsi_cmnd request_buffer
+         * scsi_cmnd request_buffer.  Note that the bdeSize is explicitly
+         * reinitialized since all iocb memory resources are used many times
+         * for transmit, receive, and continuation bpl's.
          */
+        iocb_cmd->un.fcpi64.bdl.bdeSize = (2 * sizeof (struct ulp_bde64));
         iocb_cmd->un.fcpi64.bdl.bdeSize +=
                 (num_bde * sizeof (struct ulp_bde64));
         iocb_cmd->ulpBdeCount = 1;