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authorJames Smart <James.Smart@Emulex.Com>2006-07-06 15:50:08 -0400
committerJames Bottomley <jejb@mulgrave.il.steeleye.com>2006-07-09 10:25:27 -0500
commitbcf4dbfaf38502d3919e0601c06afac7d5e42685 (patch)
tree32a29d9b1b006a85d7a4b2b08a3afd1b785c8b00 /drivers/scsi
parent9279565046f39f3ab338818c9923a23b9f25be5f (diff)
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[SCSI] lpfc 8.1.7: Consolidate dma buf cleanup into a separate function
Consolidate dma buf cleanup into a separate function Signed-off-by: James Smart <James.Smart@emulex.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/lpfc/lpfc_scsi.c40
1 files changed, 24 insertions, 16 deletions
diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c
index 5784688..d45616e 100644
--- a/drivers/scsi/lpfc/lpfc_scsi.c
+++ b/drivers/scsi/lpfc/lpfc_scsi.c
@@ -153,22 +153,6 @@ static void
lpfc_release_scsi_buf(struct lpfc_hba * phba, struct lpfc_scsi_buf * psb)
{
unsigned long iflag = 0;
- /*
- * There are only two special cases to consider. (1) the scsi command
- * requested scatter-gather usage or (2) the scsi command allocated
- * a request buffer, but did not request use_sg. There is a third
- * case, but it does not require resource deallocation.
- */
- if ((psb->seg_cnt > 0) && (psb->pCmd->use_sg)) {
- dma_unmap_sg(&phba->pcidev->dev, psb->pCmd->request_buffer,
- psb->seg_cnt, psb->pCmd->sc_data_direction);
- } else {
- if ((psb->nonsg_phys) && (psb->pCmd->request_bufflen)) {
- dma_unmap_single(&phba->pcidev->dev, psb->nonsg_phys,
- psb->pCmd->request_bufflen,
- psb->pCmd->sc_data_direction);
- }
- }
spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag);
psb->pCmd = NULL;
@@ -282,6 +266,27 @@ lpfc_scsi_prep_dma_buf(struct lpfc_hba * phba, struct lpfc_scsi_buf * lpfc_cmd)
}
static void
+lpfc_scsi_unprep_dma_buf(struct lpfc_hba * phba, struct lpfc_scsi_buf * psb)
+{
+ /*
+ * There are only two special cases to consider. (1) the scsi command
+ * requested scatter-gather usage or (2) the scsi command allocated
+ * a request buffer, but did not request use_sg. There is a third
+ * case, but it does not require resource deallocation.
+ */
+ if ((psb->seg_cnt > 0) && (psb->pCmd->use_sg)) {
+ dma_unmap_sg(&phba->pcidev->dev, psb->pCmd->request_buffer,
+ psb->seg_cnt, psb->pCmd->sc_data_direction);
+ } else {
+ if ((psb->nonsg_phys) && (psb->pCmd->request_bufflen)) {
+ dma_unmap_single(&phba->pcidev->dev, psb->nonsg_phys,
+ psb->pCmd->request_bufflen,
+ psb->pCmd->sc_data_direction);
+ }
+ }
+}
+
+static void
lpfc_handle_fcp_err(struct lpfc_scsi_buf *lpfc_cmd)
{
struct scsi_cmnd *cmnd = lpfc_cmd->pCmd;
@@ -454,6 +459,7 @@ lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn,
cmd->scsi_done(cmd);
if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
+ lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd);
lpfc_release_scsi_buf(phba, lpfc_cmd);
return;
}
@@ -511,6 +517,7 @@ lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn,
}
}
+ lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd);
lpfc_release_scsi_buf(phba, lpfc_cmd);
}
@@ -822,6 +829,7 @@ lpfc_queuecommand(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
return 0;
out_host_busy_free_buf:
+ lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd);
lpfc_release_scsi_buf(phba, lpfc_cmd);
out_host_busy:
return SCSI_MLQUEUE_HOST_BUSY;