[SCSI] qla4xxx: Print WARN_ONCE() if iSCSI function presence bit removed
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
diff --git a/drivers/scsi/qla4xxx/ql4_83xx.c b/drivers/scsi/qla4xxx/ql4_83xx.c
index 9192848..c105b6e 100644
--- a/drivers/scsi/qla4xxx/ql4_83xx.c
+++ b/drivers/scsi/qla4xxx/ql4_83xx.c
@@ -1664,3 +1664,23 @@
__qla4_83xx_disable_pause(ha);
ha->isp_ops->idc_unlock(ha);
}
+
+/**
+ * qla4_83xx_is_detached - Check if we are marked invisible.
+ * @ha: Pointer to host adapter structure.
+ **/
+int qla4_83xx_is_detached(struct scsi_qla_host *ha)
+{
+ uint32_t drv_active;
+
+ drv_active = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DRV_ACTIVE);
+
+ if (test_bit(AF_INIT_DONE, &ha->flags) &&
+ !(drv_active & (1 << ha->func_num))) {
+ DEBUG2(ql4_printk(KERN_INFO, ha, "%s: drv_active = 0x%X\n",
+ __func__, drv_active));
+ return QLA_SUCCESS;
+ }
+
+ return QLA_ERROR;
+}