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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>
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ce8b3ce55b
commit
b4c026520f
3 changed files with 21 additions and 1 deletions
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@ -147,6 +147,7 @@ int lpfc_sli_hba_setup(struct lpfc_hba *);
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int lpfc_sli_hba_down(struct lpfc_hba *);
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int lpfc_sli_issue_mbox(struct lpfc_hba *, LPFC_MBOXQ_t *, uint32_t);
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int lpfc_sli_handle_mb_event(struct lpfc_hba *);
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int lpfc_sli_flush_mbox_queue(struct lpfc_hba *);
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int lpfc_sli_handle_slow_ring_event(struct lpfc_hba *,
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struct lpfc_sli_ring *, uint32_t);
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void lpfc_sli_def_mbox_cmpl(struct lpfc_hba *, LPFC_MBOXQ_t *);
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@ -1353,6 +1353,7 @@ lpfc_offline(struct lpfc_hba * phba)
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psli = &phba->sli;
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lpfc_linkdown(phba);
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lpfc_sli_flush_mbox_queue(phba);
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for (i = 0; i < psli->num_rings; i++) {
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pring = &psli->ring[i];
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@ -578,7 +578,7 @@ lpfc_sli_handle_mb_event(struct lpfc_hba * phba)
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/* Stray Mailbox Interrupt, mbxCommand <cmd> mbxStatus
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<status> */
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lpfc_printf_log(phba,
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KERN_ERR,
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KERN_WARNING,
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LOG_MBOX | LOG_SLI,
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"%d:0304 Stray Mailbox Interrupt "
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"mbxCommand x%x mbxStatus x%x\n",
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@ -3085,6 +3085,24 @@ lpfc_sli_issue_mbox_wait(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq,
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return retval;
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}
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int
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lpfc_sli_flush_mbox_queue(struct lpfc_hba * phba)
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{
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int i = 0;
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while (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE && !phba->stopped) {
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if (i++ > LPFC_MBOX_TMO * 1000)
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return 1;
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if (lpfc_sli_handle_mb_event(phba) == 0)
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i = 0;
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msleep(1);
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}
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return (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) ? 1 : 0;
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}
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irqreturn_t
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lpfc_intr_handler(int irq, void *dev_id, struct pt_regs * regs)
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{
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