[SCSI] lpfc 8.2.3 : Temperature handling fix

Temperature handling fix - return proper error code indicator for applications

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

diff --git a/drivers/scsi/lpfc/lpfc.h b/drivers/scsi/lpfc/lpfc.h
index 46ccdff..1ddfd68 100644 (file)
--- a/drivers/scsi/lpfc/lpfc.h
+++ b/drivers/scsi/lpfc/lpfc.h
@@ -386,6 +386,11 @@ struct hbq_s {
 #define LPFC_ELS_HBQ   0
 #define LPFC_EXTRA_HBQ 1
 
+enum hba_temp_state {
+       HBA_NORMAL_TEMP,
+       HBA_OVER_TEMP
+};
+
 struct lpfc_hba {
        struct lpfc_sli sli;
        uint32_t sli_rev;               /* SLI2 or SLI3 */
@@ -589,6 +594,7 @@ struct lpfc_hba {
         */
 #define QUE_BUFTAG_BIT  (1<<31)
        uint32_t buffer_tag_count;
+       enum hba_temp_state over_temp_state;
 };
 
 static inline struct Scsi_Host *

diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c
index 4e9e890..e1b041d 100644 (file)
--- a/drivers/scsi/lpfc/lpfc_attr.c
+++ b/drivers/scsi/lpfc/lpfc_attr.c
@@ -979,6 +979,12 @@ lpfc_soft_wwpn_store(struct class_device *cdev, const char *buf, size_t count)
        unsigned int i, j, cnt=count;
        u8 wwpn[8];
 
+       spin_lock_irq(&phba->hbalock);
+       if (phba->over_temp_state == HBA_OVER_TEMP) {
+               spin_unlock_irq(&phba->hbalock);
+               return -EPERM;
+       }
+       spin_unlock_irq(&phba->hbalock);
        /* count may include a LF at end of string */
        if (buf[cnt-1] == '\n')
                cnt--;
@@ -1750,6 +1756,12 @@ sysfs_mbox_read(struct kobject *kobj, struct bin_attribute *bin_attr,
 
        spin_lock_irq(&phba->hbalock);
 
+       if (phba->over_temp_state == HBA_OVER_TEMP) {
+               sysfs_mbox_idle(phba);
+               spin_unlock_irq(&phba->hbalock);
+               return  -EPERM;
+       }
+
        if (off == 0 &&
            phba->sysfs_mbox.state  == SMBOX_WRITING &&
            phba->sysfs_mbox.offset >= 2 * sizeof(uint32_t)) {

diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index db96f75..0615af4 100644 (file)
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -246,6 +246,15 @@ lpfc_config_port_post(struct lpfc_hba *phba)
        int i, j;
        int rc;
 
+       spin_lock_irq(&phba->hbalock);
+       /*
+        * If the Config port completed correctly the HBA is not
+        * over heated any more.
+        */
+       if (phba->over_temp_state == HBA_OVER_TEMP)
+               phba->over_temp_state = HBA_NORMAL_TEMP;
+       spin_unlock_irq(&phba->hbalock);
+
        pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
        if (!pmb) {
                phba->link_state = LPFC_HBA_ERROR;
@@ -703,7 +712,10 @@ lpfc_handle_eratt(struct lpfc_hba *phba)
                                          SCSI_NL_VID_TYPE_PCI
                                          | PCI_VENDOR_ID_EMULEX);
 
+               spin_lock_irq(&phba->hbalock);
                psli->sli_flag &= ~LPFC_SLI2_ACTIVE;
+               phba->over_temp_state = HBA_OVER_TEMP;
+               spin_unlock_irq(&phba->hbalock);
                lpfc_offline_prep(phba);
                lpfc_offline(phba);
                lpfc_unblock_mgmt_io(phba);