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[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>
This commit is contained in:
James Smart 2006-07-06 15:50:43 -04:00 committed by James Bottomley
parent ce8b3ce55b
commit b4c026520f
3 changed files with 21 additions and 1 deletions
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1
drivers/scsi/lpfc/lpfc_crtn.h
View File

@ -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 *);

1
drivers/scsi/lpfc/lpfc_init.c
View File

@ -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];

20
drivers/scsi/lpfc/lpfc_sli.c
View File

@ -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)
{