Temperature handling fix - return proper error code indicator for applications
Signed-off-by: James Smart <James.Smart@xxxxxxxxxx>
diff -upNr a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c
--- a/drivers/scsi/lpfc/lpfc_attr.c 2007-10-27 13:11:06.000000000 -0400
+++ b/drivers/scsi/lpfc/lpfc_attr.c 2007-10-27 13:15:46.000000000 -0400
@@ -979,6 +979,12 @@ lpfc_soft_wwpn_store(struct class_device
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, st
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 -upNr a/drivers/scsi/lpfc/lpfc.h b/drivers/scsi/lpfc/lpfc.h
--- a/drivers/scsi/lpfc/lpfc.h 2007-10-27 13:12:18.000000000 -0400
+++ b/drivers/scsi/lpfc/lpfc.h 2007-10-27 13:15:46.000000000 -0400
@@ -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 -upNr a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
--- a/drivers/scsi/lpfc/lpfc_init.c 2007-10-27 13:11:06.000000000 -0400
+++ b/drivers/scsi/lpfc/lpfc_init.c 2007-10-27 13:15:46.000000000 -0400
@@ -246,6 +246,15 @@ lpfc_config_port_post(struct lpfc_hba *p
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);
-
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