openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

[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>
This commit is contained in:
James.Smart@Emulex.Com 2005-08-10 15:02:45 -04:00 committed by James Bottomley
parent 507caac75e
commit 483f05f013
1 changed files with 6 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/scsi/lpfc/lpfc_scsi.c
View File

@ -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;