diff --git a/drivers/staging/lustre/include/linux/libcfs/libcfs.h b/drivers/staging/lustre/include/linux/libcfs/libcfs.h
index d420449b620e..4c91ef45abb6 100644
--- a/drivers/staging/lustre/include/linux/libcfs/libcfs.h
+++ b/drivers/staging/lustre/include/linux/libcfs/libcfs.h
@@ -137,6 +137,7 @@ struct libcfs_ioctl_handler {
 
 int libcfs_register_ioctl(struct libcfs_ioctl_handler *hand);
 int libcfs_deregister_ioctl(struct libcfs_ioctl_handler *hand);
+int libcfs_setup(void);
 
 #define _LIBCFS_H
 
diff --git a/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c b/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c
index cace9ba6f474..f0b4eb42bc1d 100644
--- a/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c
+++ b/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c
@@ -2928,6 +2928,8 @@ static void __exit ko2iblnd_exit(void)
 
 static int __init ko2iblnd_init(void)
 {
+	int rc;
+
 	BUILD_BUG_ON(sizeof(struct kib_msg) > IBLND_MSG_SIZE);
 	BUILD_BUG_ON(offsetof(struct kib_msg,
 			  ibm_u.get.ibgm_rd.rd_frags[IBLND_MAX_RDMA_FRAGS])
@@ -2938,6 +2940,10 @@ static int __init ko2iblnd_init(void)
 
 	kiblnd_tunables_init();
 
+	rc = libcfs_setup();
+	if (rc)
+		return rc;
+
 	lnet_register_lnd(&the_o2iblnd);
 
 	return 0;
diff --git a/drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c b/drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c
index 79b98cdd0f9d..f01b34ac1a53 100644
--- a/drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c
+++ b/drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c
@@ -2903,6 +2903,10 @@ static int __init ksocklnd_init(void)
 	if (rc)
 		return rc;
 
+	rc = libcfs_setup();
+	if (rc)
+		return rc;
+
 	lnet_register_lnd(&the_ksocklnd);
 
 	return 0;
diff --git a/drivers/staging/lustre/lnet/libcfs/linux/linux-crypto.c b/drivers/staging/lustre/lnet/libcfs/linux/linux-crypto.c
index b55006264155..18113335503b 100644
--- a/drivers/staging/lustre/lnet/libcfs/linux/linux-crypto.c
+++ b/drivers/staging/lustre/lnet/libcfs/linux/linux-crypto.c
@@ -426,7 +426,8 @@ int cfs_crypto_register(void)
 {
 	request_module("crc32c");
 
-	adler32 = cfs_crypto_adler32_register();
+	if (cfs_crypto_adler32_register() == 0)
+		adler32 = 1;
 
 	/* check all algorithms and do performance test */
 	cfs_crypto_test_hashes();
@@ -438,6 +439,7 @@ int cfs_crypto_register(void)
  */
 void cfs_crypto_unregister(void)
 {
-	if (!adler32)
+	if (adler32)
 		cfs_crypto_adler32_unregister();
+	adler32 = 0;
 }
diff --git a/drivers/staging/lustre/lnet/libcfs/module.c b/drivers/staging/lustre/lnet/libcfs/module.c
index e021e439f140..0e3bfe4e2cb1 100644
--- a/drivers/staging/lustre/lnet/libcfs/module.c
+++ b/drivers/staging/lustre/lnet/libcfs/module.c
@@ -320,6 +320,8 @@ static struct miscdevice libcfs_dev = {
 	.fops = &libcfs_fops,
 };
 
+static int libcfs_dev_registered;
+
 int lprocfs_call_handler(void *data, int write, loff_t *ppos,
 			 void __user *buffer, size_t *lenp,
 			 int (*handler)(void *data, int write, loff_t pos,
@@ -687,49 +689,70 @@ static void lustre_remove_debugfs(void)
 	lnet_debugfs_root = NULL;
 }
 
-static int libcfs_init(void)
+static DEFINE_MUTEX(libcfs_startup);
+static int libcfs_active;
+
+int libcfs_setup(void)
 {
-	int rc;
+	int rc = -EINVAL;
+
+	mutex_lock(&libcfs_startup);
+	if (libcfs_active)
+		goto out;
+
+	if (!libcfs_dev_registered)
+		goto err;
 
 	rc = libcfs_debug_init(5 * 1024 * 1024);
 	if (rc < 0) {
 		pr_err("LustreError: libcfs_debug_init: %d\n", rc);
-		return rc;
+		goto err;
 	}
 
 	rc = cfs_cpu_init();
 	if (rc)
-		goto cleanup_debug;
-
-	rc = misc_register(&libcfs_dev);
-	if (rc) {
-		CERROR("misc_register: error %d\n", rc);
-		goto cleanup_cpu;
-	}
+		goto err;
 
 	cfs_rehash_wq = alloc_workqueue("cfs_rh", WQ_SYSFS, 4);
 	if (!cfs_rehash_wq) {
 		CERROR("Failed to start rehash workqueue.\n");
 		rc = -ENOMEM;
-		goto cleanup_deregister;
+		goto err;
 	}
 
 	rc = cfs_crypto_register();
 	if (rc) {
 		CERROR("cfs_crypto_register: error %d\n", rc);
-		goto cleanup_deregister;
+		goto err;
 	}
 
 	lustre_insert_debugfs(lnet_table, lnet_debugfs_symlinks);
 
 	CDEBUG(D_OTHER, "portals setup OK\n");
+out:
+	libcfs_active = 1;
+	mutex_unlock(&libcfs_startup);
 	return 0;
- cleanup_deregister:
-	misc_deregister(&libcfs_dev);
-cleanup_cpu:
+err:
+	cfs_crypto_unregister();
+	if (cfs_rehash_wq)
+		destroy_workqueue(cfs_rehash_wq);
 	cfs_cpu_fini();
- cleanup_debug:
 	libcfs_debug_cleanup();
+	mutex_unlock(&libcfs_startup);
+	return rc;
+}
+EXPORT_SYMBOL(libcfs_setup);
+
+static int libcfs_init(void)
+{
+	int rc;
+
+	rc = misc_register(&libcfs_dev);
+	if (rc)
+		CERROR("misc_register: error %d\n", rc);
+	else
+		libcfs_dev_registered = 1;
 	return rc;
 }
 
@@ -739,14 +762,13 @@ static void libcfs_exit(void)
 
 	lustre_remove_debugfs();
 
-	if (cfs_rehash_wq) {
+	if (cfs_rehash_wq)
 		destroy_workqueue(cfs_rehash_wq);
-		cfs_rehash_wq = NULL;
-	}
 
 	cfs_crypto_unregister();
 
-	misc_deregister(&libcfs_dev);
+	if (libcfs_dev_registered)
+		misc_deregister(&libcfs_dev);
 
 	cfs_cpu_fini();
 
diff --git a/drivers/staging/lustre/lnet/lnet/module.c b/drivers/staging/lustre/lnet/lnet/module.c
index c0c4723f72fd..f6e912e79ca7 100644
--- a/drivers/staging/lustre/lnet/lnet/module.c
+++ b/drivers/staging/lustre/lnet/lnet/module.c
@@ -184,6 +184,10 @@ static int __init lnet_init(void)
 
 	mutex_init(&lnet_config_mutex);
 
+	rc = libcfs_setup();
+	if (rc)
+		return rc;
+
 	rc = lnet_lib_init();
 	if (rc) {
 		CERROR("lnet_lib_init: error %d\n", rc);
diff --git a/drivers/staging/lustre/lnet/selftest/module.c b/drivers/staging/lustre/lnet/selftest/module.c
index 7359aa56d9b3..9ba65320f748 100644
--- a/drivers/staging/lustre/lnet/selftest/module.c
+++ b/drivers/staging/lustre/lnet/selftest/module.c
@@ -89,9 +89,13 @@ static int
 lnet_selftest_init(void)
 {
 	int nscheds;
-	int rc = -ENOMEM;
+	int rc;
 	int i;
 
+	rc = libcfs_setup();
+	if (rc)
+		return rc;
+
 	lst_serial_wq = alloc_ordered_workqueue("lst_s", 0);
 	if (!lst_serial_wq) {
 		CERROR("Failed to create serial WI scheduler for LST\n");
diff --git a/drivers/staging/lustre/lustre/fid/fid_request.c b/drivers/staging/lustre/lustre/fid/fid_request.c
index 030680f37c79..fc6582fe117f 100644
--- a/drivers/staging/lustre/lustre/fid/fid_request.c
+++ b/drivers/staging/lustre/lustre/fid/fid_request.c
@@ -419,6 +419,12 @@ EXPORT_SYMBOL(client_fid_fini);
 
 static int __init fid_init(void)
 {
+	int rc;
+
+	rc = libcfs_setup();
+	if (rc)
+		return rc;
+
 	seq_debugfs_dir = ldebugfs_register(LUSTRE_SEQ_NAME,
 					    debugfs_lustre_root,
 					    NULL, NULL);
diff --git a/drivers/staging/lustre/lustre/fld/fld_request.c b/drivers/staging/lustre/lustre/fld/fld_request.c
index 068c364adda8..b2d77c8d3dc7 100644
--- a/drivers/staging/lustre/lustre/fld/fld_request.c
+++ b/drivers/staging/lustre/lustre/fld/fld_request.c
@@ -450,6 +450,12 @@ void fld_client_flush(struct lu_client_fld *fld)
 
 static int __init fld_init(void)
 {
+	int rc;
+
+	rc = libcfs_setup();
+	if (rc)
+		return rc;
+
 	fld_debugfs_dir = ldebugfs_register(LUSTRE_FLD_NAME,
 					    debugfs_lustre_root,
 					    NULL, NULL);
diff --git a/drivers/staging/lustre/lustre/llite/super25.c b/drivers/staging/lustre/lustre/llite/super25.c
index 861e7a60f408..d335f29556c2 100644
--- a/drivers/staging/lustre/lustre/llite/super25.c
+++ b/drivers/staging/lustre/lustre/llite/super25.c
@@ -90,6 +90,10 @@ static int __init lustre_init(void)
 	BUILD_BUG_ON(sizeof(LUSTRE_VOLATILE_HDR) !=
 		     LUSTRE_VOLATILE_HDR_LEN + 1);
 
+	rc = libcfs_setup();
+	if (rc)
+		return rc;
+
 	/* print an address of _any_ initialized kernel symbol from this
 	 * module, to allow debugging with gdb that doesn't support data
 	 * symbols from modules.
diff --git a/drivers/staging/lustre/lustre/lmv/lmv_obd.c b/drivers/staging/lustre/lustre/lmv/lmv_obd.c
index 7198a6384028..b55be6cb52bb 100644
--- a/drivers/staging/lustre/lustre/lmv/lmv_obd.c
+++ b/drivers/staging/lustre/lustre/lmv/lmv_obd.c
@@ -3108,9 +3108,14 @@ static struct md_ops lmv_md_ops = {
 static int __init lmv_init(void)
 {
 	struct lprocfs_static_vars lvars;
+	int rc;
 
 	lprocfs_lmv_init_vars(&lvars);
 
+	rc = libcfs_setup();
+	if (rc)
+		return rc;
+
 	return class_register_type(&lmv_obd_ops, &lmv_md_ops,
 				 LUSTRE_LMV_NAME, NULL);
 }
diff --git a/drivers/staging/lustre/lustre/lov/lov_obd.c b/drivers/staging/lustre/lustre/lov/lov_obd.c
index 94da35e673f7..d091e03098b5 100644
--- a/drivers/staging/lustre/lustre/lov/lov_obd.c
+++ b/drivers/staging/lustre/lustre/lov/lov_obd.c
@@ -1403,6 +1403,10 @@ static int __init lov_init(void)
 	 */
 	CDEBUG(D_INFO, "Lustre LOV module (%p).\n", &lov_caches);
 
+	rc = libcfs_setup();
+	if (rc)
+		return rc;
+
 	rc = lu_kmem_init(lov_caches);
 	if (rc)
 		return rc;
diff --git a/drivers/staging/lustre/lustre/mdc/mdc_request.c b/drivers/staging/lustre/lustre/mdc/mdc_request.c
index 7d577bf535aa..0eaf35c55966 100644
--- a/drivers/staging/lustre/lustre/mdc/mdc_request.c
+++ b/drivers/staging/lustre/lustre/mdc/mdc_request.c
@@ -2733,6 +2733,11 @@ static struct md_ops mdc_md_ops = {
 static int __init mdc_init(void)
 {
 	struct lprocfs_static_vars lvars = { NULL };
+	int rc;
+
+	rc = libcfs_setup();
+	if (rc)
+		return rc;
 
 	lprocfs_mdc_init_vars(&lvars);
 
diff --git a/drivers/staging/lustre/lustre/mgc/mgc_request.c b/drivers/staging/lustre/lustre/mgc/mgc_request.c
index c61cd23a96df..36c3f13ab9f4 100644
--- a/drivers/staging/lustre/lustre/mgc/mgc_request.c
+++ b/drivers/staging/lustre/lustre/mgc/mgc_request.c
@@ -1826,6 +1826,12 @@ static struct obd_ops mgc_obd_ops = {
 
 static int __init mgc_init(void)
 {
+	int rc;
+
+	rc = libcfs_setup();
+	if (rc)
+		return rc;
+
 	return class_register_type(&mgc_obd_ops, NULL,
 				   LUSTRE_MGC_NAME, NULL);
 }
diff --git a/drivers/staging/lustre/lustre/obdclass/class_obd.c b/drivers/staging/lustre/lustre/obdclass/class_obd.c
index 7b5be6b123bf..2dd8728760d1 100644
--- a/drivers/staging/lustre/lustre/obdclass/class_obd.c
+++ b/drivers/staging/lustre/lustre/obdclass/class_obd.c
@@ -449,6 +449,11 @@ static int __init obdclass_init(void)
 	LCONSOLE_INFO("Lustre: Build Version: " LUSTRE_VERSION_STRING "\n");
 
 	spin_lock_init(&obd_types_lock);
+
+	err = libcfs_setup();
+	if (err)
+		return err;
+
 	obd_zombie_impexp_init();
 
 	err = obd_init_checks();
diff --git a/drivers/staging/lustre/lustre/obdecho/echo_client.c b/drivers/staging/lustre/lustre/obdecho/echo_client.c
index 767067b61109..9a078358188b 100644
--- a/drivers/staging/lustre/lustre/obdecho/echo_client.c
+++ b/drivers/staging/lustre/lustre/obdecho/echo_client.c
@@ -1701,10 +1701,16 @@ static void echo_client_exit(void)
 
 static int __init obdecho_init(void)
 {
+	int rc;
+
 	LCONSOLE_INFO("Echo OBD driver; http://www.lustre.org/\n");
 
 	LASSERT(PAGE_SIZE % OBD_ECHO_BLOCK_SIZE == 0);
 
+	rc = libcfs_setup();
+	if (rc)
+		return rc;
+
 	return echo_client_init();
 }
 
diff --git a/drivers/staging/lustre/lustre/osc/osc_request.c b/drivers/staging/lustre/lustre/osc/osc_request.c
index 0b5245741e42..2c92119b37be 100644
--- a/drivers/staging/lustre/lustre/osc/osc_request.c
+++ b/drivers/staging/lustre/lustre/osc/osc_request.c
@@ -2831,6 +2831,10 @@ static int __init osc_init(void)
 	 */
 	CDEBUG(D_INFO, "Lustre OSC module (%p).\n", &osc_caches);
 
+	rc = libcfs_setup();
+	if (rc)
+		return rc;
+
 	rc = lu_kmem_init(osc_caches);
 	if (rc)
 		return rc;
diff --git a/drivers/staging/lustre/lustre/ptlrpc/ptlrpc_module.c b/drivers/staging/lustre/lustre/ptlrpc/ptlrpc_module.c
index 38923418669f..5c32b657b3b5 100644
--- a/drivers/staging/lustre/lustre/ptlrpc/ptlrpc_module.c
+++ b/drivers/staging/lustre/lustre/ptlrpc/ptlrpc_module.c
@@ -94,6 +94,10 @@ static int __init ptlrpc_init(void)
 	mutex_init(&ptlrpcd_mutex);
 	ptlrpc_init_xid();
 
+	rc = libcfs_setup();
+	if (rc)
+		return rc;
+
 	rc = req_layout_init();
 	if (rc)
 		return rc;