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lpfc: fix race between LOGO/PLOGI handling causing NULL pointer

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Fix race between LOGO/PLOGI handling causing NULL pointer

Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: Dick Kennedy <dick.kennedy@emulex.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
James Smart
2014-09-03 12:57:19 -04:00
committed by Christoph Hellwig
parent 2f6fa2c911
commit 12838e74f5
3 changed files with 30 additions and 2 deletions
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6
drivers/scsi/lpfc/lpfc_disc.h
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@@ -78,7 +78,8 @@ struct lpfc_nodelist {
struct list_head nlp_listp;
struct lpfc_name nlp_portname;
struct lpfc_name nlp_nodename;
uint32_t nlp_flag; /* entry flags */
uint32_t nlp_flag; /* entry flags */
uint32_t nlp_add_flag; /* additional flags */
uint32_t nlp_DID; /* FC D_ID of entry */
uint32_t nlp_last_elscmd; /* Last ELS cmd sent */
uint16_t nlp_type;
@@ -157,6 +158,9 @@ struct lpfc_node_rrq {
#define NLP_FIRSTBURST 0x40000000 /* Target supports FirstBurst */
#define NLP_RPI_REGISTERED 0x80000000 /* nlp_rpi is valid */
/* Defines for nlp_add_flag (uint32) */
#define NLP_IN_DEV_LOSS 0x00000001 /* Dev Loss processing in progress */
/* ndlp usage management macros */
#define NLP_CHK_NODE_ACT(ndlp) (((ndlp)->nlp_usg_map \
& NLP_USG_NODE_ACT_BIT) \