From: Dan Carpenter <dan.carpenter@oracle.com>
To: James Smart <james.smart@emulex.com>
Cc: "James E.J. Bottomley" <JBottomley@parallels.com>,
linux-scsi@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [patch] [SCSI] lpfc: nested calls to spin_lock_irq()
Date: Fri, 16 Dec 2011 23:28:19 +0300 [thread overview]
Message-ID: <20111216202819.GF18570@elgon.mountain> (raw)
We already have disabled IRQs so there is no need to disable them again.
Also the functions are not nestable, the first spin_unlock_irq() will
enable IRQs and we don't want to do that until the second unlock.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c
index 678a4b1..d7e916b 100644
--- a/drivers/scsi/lpfc/lpfc_hbadisc.c
+++ b/drivers/scsi/lpfc/lpfc_hbadisc.c
@@ -2977,9 +2977,9 @@ lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la)
"topology\n");
/* Get Loop Map information */
if (bf_get(lpfc_mbx_read_top_il, la)) {
- spin_lock_irq(shost->host_lock);
+ spin_lock(shost->host_lock);
vport->fc_flag |= FC_LBIT;
- spin_unlock_irq(shost->host_lock);
+ spin_unlock(shost->host_lock);
}
vport->fc_myDID = bf_get(lpfc_mbx_read_top_alpa_granted, la);
@@ -3029,9 +3029,9 @@ lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la)
phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
}
vport->fc_myDID = phba->fc_pref_DID;
- spin_lock_irq(shost->host_lock);
+ spin_lock(shost->host_lock);
vport->fc_flag |= FC_LBIT;
- spin_unlock_irq(shost->host_lock);
+ spin_unlock(shost->host_lock);
}
spin_unlock_irq(&phba->hbalock);
next reply other threads:[~2011-12-16 20:28 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-16 20:28 Dan Carpenter [this message]
2011-12-21 15:42 ` [patch] [SCSI] lpfc: nested calls to spin_lock_irq() James Smart
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