diff options
author | James Smart <james.smart@emulex.com> | 2013-03-01 16:37:44 -0500 |
---|---|---|
committer | James Bottomley <JBottomley@Parallels.com> | 2013-04-09 15:20:29 -0700 |
commit | 38c206736612550ab946889e1522fc71bc2eed4a (patch) | |
tree | 25390e99f5a816329ef671dcda7fe52fe842b31c | |
parent | 9466150489c53b4425dde7f4634fe2b0cfcb61a5 (diff) | |
download | linux-38c206736612550ab946889e1522fc71bc2eed4a.tar.bz2 |
[SCSI] lpfc 8.3.38: Fixed circular locking dependency and inconsistent lock state issues
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
-rw-r--r-- | drivers/scsi/lpfc/lpfc_hbadisc.c | 18 | ||||
-rw-r--r-- | drivers/scsi/lpfc/lpfc_init.c | 8 | ||||
-rw-r--r-- | drivers/scsi/lpfc/lpfc_scsi.c | 4 | ||||
-rw-r--r-- | drivers/scsi/lpfc/lpfc_sli.c | 8 |
4 files changed, 20 insertions, 18 deletions
diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c index 8ab3e9622714..4decb868017e 100644 --- a/drivers/scsi/lpfc/lpfc_hbadisc.c +++ b/drivers/scsi/lpfc/lpfc_hbadisc.c @@ -2990,6 +2990,7 @@ lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la) struct lpfc_dmabuf *mp; int rc; struct fcf_record *fcf_record; + uint32_t fc_flags = 0; spin_lock_irq(&phba->hbalock); switch (bf_get(lpfc_mbx_read_top_link_spd, la)) { @@ -3021,11 +3022,8 @@ lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la) "1309 Link Up Event npiv not supported in loop " "topology\n"); /* Get Loop Map information */ - if (bf_get(lpfc_mbx_read_top_il, la)) { - spin_lock(shost->host_lock); - vport->fc_flag |= FC_LBIT; - spin_unlock(shost->host_lock); - } + if (bf_get(lpfc_mbx_read_top_il, la)) + fc_flags |= FC_LBIT; vport->fc_myDID = bf_get(lpfc_mbx_read_top_alpa_granted, la); i = la->lilpBde64.tus.f.bdeSize; @@ -3074,12 +3072,16 @@ 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(shost->host_lock); - vport->fc_flag |= FC_LBIT; - spin_unlock(shost->host_lock); + fc_flags |= FC_LBIT; } spin_unlock_irq(&phba->hbalock); + if (fc_flags) { + spin_lock_irq(shost->host_lock); + vport->fc_flag |= fc_flags; + spin_unlock_irq(shost->host_lock); + } + lpfc_linkup(phba); sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!sparam_mbox) diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c index 057c7c18b7e3..5da297290262 100644 --- a/drivers/scsi/lpfc/lpfc_init.c +++ b/drivers/scsi/lpfc/lpfc_init.c @@ -2914,9 +2914,9 @@ lpfc_sli4_xri_sgl_update(struct lpfc_hba *phba) sglq_entry->state = SGL_FREED; list_add_tail(&sglq_entry->list, &els_sgl_list); } - spin_lock(&phba->hbalock); + spin_lock_irq(&phba->hbalock); list_splice_init(&els_sgl_list, &phba->sli4_hba.lpfc_sgl_list); - spin_unlock(&phba->hbalock); + spin_unlock_irq(&phba->hbalock); } else if (els_xri_cnt < phba->sli4_hba.els_xri_cnt) { /* els xri-sgl shrinked */ xri_cnt = phba->sli4_hba.els_xri_cnt - els_xri_cnt; @@ -3014,9 +3014,9 @@ lpfc_sli4_xri_sgl_update(struct lpfc_hba *phba) psb->cur_iocbq.sli4_lxritag = lxri; psb->cur_iocbq.sli4_xritag = phba->sli4_hba.xri_ids[lxri]; } - spin_lock(&phba->scsi_buf_list_lock); + spin_lock_irq(&phba->scsi_buf_list_lock); list_splice_init(&scsi_sgl_list, &phba->lpfc_scsi_buf_list); - spin_unlock(&phba->scsi_buf_list_lock); + spin_unlock_irq(&phba->scsi_buf_list_lock); return 0; diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c index e75210d67970..74b8710e1e90 100644 --- a/drivers/scsi/lpfc/lpfc_scsi.c +++ b/drivers/scsi/lpfc/lpfc_scsi.c @@ -885,9 +885,9 @@ lpfc_sli4_repost_scsi_sgl_list(struct lpfc_hba *phba) int num_posted, rc = 0; /* get all SCSI buffers need to repost to a local list */ - spin_lock(&phba->scsi_buf_list_lock); + spin_lock_irq(&phba->scsi_buf_list_lock); list_splice_init(&phba->lpfc_scsi_buf_list, &post_sblist); - spin_unlock(&phba->scsi_buf_list_lock); + spin_unlock_irq(&phba->scsi_buf_list_lock); /* post the list of scsi buffer sgls to port if available */ if (!list_empty(&post_sblist)) { diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c index 5fade546f4f3..568cebea05bc 100644 --- a/drivers/scsi/lpfc/lpfc_sli.c +++ b/drivers/scsi/lpfc/lpfc_sli.c @@ -5999,9 +5999,9 @@ lpfc_sli4_repost_els_sgl_list(struct lpfc_hba *phba) LIST_HEAD(post_sgl_list); LIST_HEAD(free_sgl_list); - spin_lock(&phba->hbalock); + spin_lock_irq(&phba->hbalock); list_splice_init(&phba->sli4_hba.lpfc_sgl_list, &allc_sgl_list); - spin_unlock(&phba->hbalock); + spin_unlock_irq(&phba->hbalock); list_for_each_entry_safe(sglq_entry, sglq_entry_next, &allc_sgl_list, list) { @@ -6102,10 +6102,10 @@ lpfc_sli4_repost_els_sgl_list(struct lpfc_hba *phba) /* push els sgls posted to the availble list */ if (!list_empty(&post_sgl_list)) { - spin_lock(&phba->hbalock); + spin_lock_irq(&phba->hbalock); list_splice_init(&post_sgl_list, &phba->sli4_hba.lpfc_sgl_list); - spin_unlock(&phba->hbalock); + spin_unlock_irq(&phba->hbalock); } else { lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "3161 Failure to post els sgl to port.\n"); |