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authorJames Smart <James.Smart@Emulex.Com>2006-07-06 15:50:43 -0400
committerJames Bottomley <jejb@mulgrave.il.steeleye.com>2006-07-09 10:48:38 -0500
commitb4c026520ff0a4cb838a941bb0ed8996075e3d8c (patch)
treec280062f59f802cfbc92d967e54cdd0191ce4e36 /drivers
parentce8b3ce55bb0bd9318954efab0f714b088178978 (diff)
[SCSI] lpfc 8.1.7: Add lpfc_sli_flush_mbox_queue() function
Add lpfc_sli_flush_mbox_queue() function and use it in lpfc_offline() call to avoid deadlock on thread block. Signed-off-by: James Smart <James.Smart@emulex.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/scsi/lpfc/lpfc_crtn.h1
-rw-r--r--drivers/scsi/lpfc/lpfc_init.c1
-rw-r--r--drivers/scsi/lpfc/lpfc_sli.c20
3 files changed, 21 insertions, 1 deletions
diff --git a/drivers/scsi/lpfc/lpfc_crtn.h b/drivers/scsi/lpfc/lpfc_crtn.h
index ee22173fce4..517e9e4dd46 100644
--- a/drivers/scsi/lpfc/lpfc_crtn.h
+++ b/drivers/scsi/lpfc/lpfc_crtn.h
@@ -147,6 +147,7 @@ int lpfc_sli_hba_setup(struct lpfc_hba *);
int lpfc_sli_hba_down(struct lpfc_hba *);
int lpfc_sli_issue_mbox(struct lpfc_hba *, LPFC_MBOXQ_t *, uint32_t);
int lpfc_sli_handle_mb_event(struct lpfc_hba *);
+int lpfc_sli_flush_mbox_queue(struct lpfc_hba *);
int lpfc_sli_handle_slow_ring_event(struct lpfc_hba *,
struct lpfc_sli_ring *, uint32_t);
void lpfc_sli_def_mbox_cmpl(struct lpfc_hba *, LPFC_MBOXQ_t *);
diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index 2a81df05402..ee591c107e1 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -1353,6 +1353,7 @@ lpfc_offline(struct lpfc_hba * phba)
psli = &phba->sli;
lpfc_linkdown(phba);
+ lpfc_sli_flush_mbox_queue(phba);
for (i = 0; i < psli->num_rings; i++) {
pring = &psli->ring[i];
diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
index 8193a384a9f..c441e37eb05 100644
--- a/drivers/scsi/lpfc/lpfc_sli.c
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -578,7 +578,7 @@ lpfc_sli_handle_mb_event(struct lpfc_hba * phba)
/* Stray Mailbox Interrupt, mbxCommand <cmd> mbxStatus
<status> */
lpfc_printf_log(phba,
- KERN_ERR,
+ KERN_WARNING,
LOG_MBOX | LOG_SLI,
"%d:0304 Stray Mailbox Interrupt "
"mbxCommand x%x mbxStatus x%x\n",
@@ -3085,6 +3085,24 @@ lpfc_sli_issue_mbox_wait(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq,
return retval;
}
+int
+lpfc_sli_flush_mbox_queue(struct lpfc_hba * phba)
+{
+ int i = 0;
+
+ while (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE && !phba->stopped) {
+ if (i++ > LPFC_MBOX_TMO * 1000)
+ return 1;
+
+ if (lpfc_sli_handle_mb_event(phba) == 0)
+ i = 0;
+
+ msleep(1);
+ }
+
+ return (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) ? 1 : 0;
+}
+
irqreturn_t
lpfc_intr_handler(int irq, void *dev_id, struct pt_regs * regs)
{