[SCSI] lpfc 8.1.12 : Don't process ERATT interrupts when issuing KILL_BOARD mbx command

Don't process ERATT interrupts when issuing KILL_BOARD mbx command

Signed-off-by: James Smart <James.Smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

2 files changed, 13 insertions, 0 deletions

diff --git a/drivers/scsi/lpfc/lpfc.h b/drivers/scsi/lpfc/lpfc.h
index ccc4ca194c6..913e08ee0b4 100644
--- a/drivers/scsi/lpfc/lpfc.h
+++ b/drivers/scsi/lpfc/lpfc.h
@@ -250,6 +250,7 @@ struct lpfc_hba {
 #define FC_LOOPBACK_MODE        0x40000 /* NPort is in Loopback mode */
                                         /* This flag is set while issuing */
                                         /* INIT_LINK mailbox command */
+#define FC_IGNORE_ERATT         0x80000 /* intr handler should ignore ERATT */
 
         uint32_t fc_topology;   /* link topology, from LINK INIT */
 
diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
index 645291efce0..1508b3f6639 100644
--- a/drivers/scsi/lpfc/lpfc_sli.c
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -1584,6 +1584,7 @@ void lpfc_reset_barrier(struct lpfc_hba * phba)
         hc_copy = readl(phba->HCregaddr);
         writel((hc_copy & ~HC_ERINT_ENA), phba->HCregaddr);
         readl(phba->HCregaddr); /* flush */
+        phba->fc_flag |= FC_IGNORE_ERATT;
 
         if (readl(phba->HAregaddr) & HA_ERATT) {
                 /* Clear Chip error bit */
@@ -1626,6 +1627,7 @@ clear_errat:
         }
 
 restore_hc:
+        phba->fc_flag &= ~FC_IGNORE_ERATT;
         writel(hc_copy, phba->HCregaddr);
         readl(phba->HCregaddr); /* flush */
 }
@@ -1661,6 +1663,7 @@ lpfc_sli_brdkill(struct lpfc_hba * phba)
         status &= ~HC_ERINT_ENA;
         writel(status, phba->HCregaddr);
         readl(phba->HCregaddr); /* flush */
+        phba->fc_flag |= FC_IGNORE_ERATT;
         spin_unlock_irq(phba->host->host_lock);
 
         lpfc_kill_board(phba, pmb);
@@ -1670,6 +1673,9 @@ lpfc_sli_brdkill(struct lpfc_hba * phba)
         if (retval != MBX_SUCCESS) {
                 if (retval != MBX_BUSY)
                         mempool_free(pmb, phba->mbox_mem_pool);
+                spin_lock_irq(phba->host->host_lock);
+                phba->fc_flag &= ~FC_IGNORE_ERATT;
+                spin_unlock_irq(phba->host->host_lock);
                 return 1;
         }
 
@@ -1696,6 +1702,7 @@ lpfc_sli_brdkill(struct lpfc_hba * phba)
         }
         spin_lock_irq(phba->host->host_lock);
         psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
+        phba->fc_flag &= ~FC_IGNORE_ERATT;
         spin_unlock_irq(phba->host->host_lock);
 
         psli->mbox_active = NULL;
@@ -3207,6 +3214,11 @@ lpfc_intr_handler(int irq, void *dev_id)
          */
         spin_lock(phba->host->host_lock);
         ha_copy = readl(phba->HAregaddr);
+        /* If somebody is waiting to handle an eratt don't process it
+         * here.  The brdkill function will do this.
+         */
+        if (phba->fc_flag & FC_IGNORE_ERATT)
+                ha_copy &= ~HA_ERATT;
         writel((ha_copy & ~(HA_LATT | HA_ERATT)), phba->HAregaddr);
         readl(phba->HAregaddr); /* flush */
         spin_unlock(phba->host->host_lock);