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[SCSI] lpfc 8.3.38: Fixed deadlock condition in FCF round robin handling

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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 2013-03-01 16:36:54 -05:00 committed by James Bottomley
parent a33c4f7bff
commit 2562669cf6
2 changed files with 10 additions and 1 deletions
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2
drivers/scsi/lpfc/lpfc_hbadisc.c
View file

@ -1793,6 +1793,8 @@ lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq,
virt_addr = mboxq->sge_array->addr[0];
shdr = (union lpfc_sli4_cfg_shdr *)virt_addr;
lpfc_sli_pcimem_bcopy(shdr, shdr,
sizeof(union lpfc_sli4_cfg_shdr));
shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
if (shdr_status || shdr_add_status) {

9
drivers/scsi/lpfc/lpfc_sli.c
View file

@ -15507,11 +15507,18 @@ lpfc_check_next_fcf_pri_level(struct lpfc_hba *phba)
LPFC_SLI4_FCF_TBL_INDX_MAX);
lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
"3060 Last IDX %d\n", last_index);
if (list_empty(&phba->fcf.fcf_pri_list)) {
/* Verify the priority list has 2 or more entries */
spin_lock_irq(&phba->hbalock);
if (list_empty(&phba->fcf.fcf_pri_list) ||
list_is_singular(&phba->fcf.fcf_pri_list)) {
spin_unlock_irq(&phba->hbalock);
lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
"3061 Last IDX %d\n", last_index);
return 0; /* Empty rr list */
}
spin_unlock_irq(&phba->hbalock);
next_fcf_pri = 0;
/*
* Clear the rr_bmask and set all of the bits that are at this