[SCSI] lpfc 8.3.31: Fixed system panic due to midlayer abort and driver complete race on SCSI cmd
Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
index 57eaaa5..7c40679 100644
--- a/drivers/scsi/lpfc/lpfc_sli.c
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -502,7 +502,7 @@
* allocation is successful, it returns pointer to the newly
* allocated iocb object else it returns NULL.
**/
-static struct lpfc_iocbq *
+struct lpfc_iocbq *
__lpfc_sli_get_iocbq(struct lpfc_hba *phba)
{
struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list;
@@ -1259,7 +1259,7 @@
struct lpfc_iocbq *piocb)
{
list_add_tail(&piocb->list, &pring->txcmplq);
- piocb->iocb_flag |= LPFC_IO_ON_Q;
+ piocb->iocb_flag |= LPFC_IO_ON_TXCMPLQ;
pring->txcmplq_cnt++;
if (pring->txcmplq_cnt > pring->txcmplq_max)
pring->txcmplq_max = pring->txcmplq_cnt;
@@ -2558,9 +2558,9 @@
if (iotag != 0 && iotag <= phba->sli.last_iotag) {
cmd_iocb = phba->sli.iocbq_lookup[iotag];
list_del_init(&cmd_iocb->list);
- if (cmd_iocb->iocb_flag & LPFC_IO_ON_Q) {
+ if (cmd_iocb->iocb_flag & LPFC_IO_ON_TXCMPLQ) {
pring->txcmplq_cnt--;
- cmd_iocb->iocb_flag &= ~LPFC_IO_ON_Q;
+ cmd_iocb->iocb_flag &= ~LPFC_IO_ON_TXCMPLQ;
}
return cmd_iocb;
}
@@ -2593,14 +2593,14 @@
if (iotag != 0 && iotag <= phba->sli.last_iotag) {
cmd_iocb = phba->sli.iocbq_lookup[iotag];
- list_del_init(&cmd_iocb->list);
- if (cmd_iocb->iocb_flag & LPFC_IO_ON_Q) {
- cmd_iocb->iocb_flag &= ~LPFC_IO_ON_Q;
+ if (cmd_iocb->iocb_flag & LPFC_IO_ON_TXCMPLQ) {
+ /* remove from txcmpl queue list */
+ list_del_init(&cmd_iocb->list);
+ cmd_iocb->iocb_flag &= ~LPFC_IO_ON_TXCMPLQ;
pring->txcmplq_cnt--;
+ return cmd_iocb;
}
- return cmd_iocb;
}
-
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"0372 iotag x%x is out off range: max iotag (x%x)\n",
iotag, phba->sli.last_iotag);
@@ -3468,6 +3468,9 @@
/* Retrieve everything on the txcmplq */
list_splice_init(&pring->txcmplq, &txcmplq);
pring->txcmplq_cnt = 0;
+
+ /* Indicate the I/O queues are flushed */
+ phba->hba_flag |= HBA_FCP_IOQ_FLUSH;
spin_unlock_irq(&phba->hbalock);
/* Flush the txq */
@@ -6069,6 +6072,8 @@
else
phba->hba_flag &= ~HBA_FIP_SUPPORT;
+ phba->hba_flag &= ~HBA_FCP_IOQ_FLUSH;
+
if (phba->sli_rev != LPFC_SLI_REV4) {
lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
"0376 READ_REV Error. SLI Level %d "