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[SCSI] lpfc 8.3.34: Correct lock handling to eliminate reset escalation on I/O abort

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Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
James Smart 2012-08-14 14:26:28 -04:00 committed by James Bottomley
parent 1c13bf6648
commit 92e3af663a
1 changed files with 9 additions and 3 deletions
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12
drivers/scsi/lpfc/lpfc_scsi.c
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@ -3829,12 +3829,15 @@ lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn,
cmd->scsi_done(cmd);
if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
spin_lock_irq(&phba->hbalock);
lpfc_cmd->pCmd = NULL;
spin_unlock_irq(&phba->hbalock);
/*
* If there is a thread waiting for command completion
* wake up the thread.
*/
spin_lock_irqsave(shost->host_lock, flags);
lpfc_cmd->pCmd = NULL;
if (lpfc_cmd->waitq)
wake_up(lpfc_cmd->waitq);
spin_unlock_irqrestore(shost->host_lock, flags);
@ -3868,12 +3871,15 @@ lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn,
}
}
spin_lock_irq(&phba->hbalock);
lpfc_cmd->pCmd = NULL;
spin_unlock_irq(&phba->hbalock);
/*
* If there is a thread waiting for command completion
* wake up the thread.
*/
spin_lock_irqsave(shost->host_lock, flags);
lpfc_cmd->pCmd = NULL;
if (lpfc_cmd->waitq)
wake_up(lpfc_cmd->waitq);
spin_unlock_irqrestore(shost->host_lock, flags);
@ -4409,7 +4415,7 @@ lpfc_abort_handler(struct scsi_cmnd *cmnd)
}
lpfc_cmd = (struct lpfc_scsi_buf *)cmnd->host_scribble;
if (!lpfc_cmd) {
if (!lpfc_cmd || !lpfc_cmd->pCmd) {
spin_unlock_irq(&phba->hbalock);
lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
"2873 SCSI Layer I/O Abort Request IO CMPL Status "