diff --git a/iscsi-scst/kernel/config.c b/iscsi-scst/kernel/config.c
index 09de5588d..c94017413 100644
--- a/iscsi-scst/kernel/config.c
+++ b/iscsi-scst/kernel/config.c
@@ -398,7 +398,7 @@ static int add_session(void __user *ptr)
 
 	info = kzalloc(sizeof(*info), GFP_KERNEL);
 	if (info == NULL) {
-		PRINT_ERROR("Can't alloc info (size %d)", sizeof(*info));
+		PRINT_ERROR("Can't alloc info (size %zd)", sizeof(*info));
 		err = -ENOMEM;
 		goto out;
 	}
@@ -443,7 +443,7 @@ static int del_session(void __user *ptr)
 
 	info = kzalloc(sizeof(*info), GFP_KERNEL);
 	if (info == NULL) {
-		PRINT_ERROR("Can't alloc info (size %d)", sizeof(*info));
+		PRINT_ERROR("Can't alloc info (size %zd)", sizeof(*info));
 		err = -ENOMEM;
 		goto out;
 	}
@@ -876,7 +876,7 @@ static int add_target(void __user *ptr)
 
 	info = kzalloc(sizeof(*info), GFP_KERNEL);
 	if (info == NULL) {
-		PRINT_ERROR("Can't alloc info (size %d)", sizeof(*info));
+		PRINT_ERROR("Can't alloc info (size %zd)", sizeof(*info));
 		err = -ENOMEM;
 		goto out;
 	}
@@ -1093,7 +1093,7 @@ out:
 	return err;
 }
 
-int open(struct inode *inode, struct file *file)
+static int open(struct inode *inode, struct file *file)
 {
 	bool already;
 
diff --git a/iscsi-scst/kernel/session.c b/iscsi-scst/kernel/session.c
index 9d26c7c10..e3f1b26f1 100644
--- a/iscsi-scst/kernel/session.c
+++ b/iscsi-scst/kernel/session.c
@@ -159,7 +159,7 @@ int __add_session(struct iscsi_target *target,
 
 	params_info = kmalloc(sizeof(*params_info), GFP_KERNEL);
 	if (params_info == NULL) {
-		PRINT_ERROR("Unable to allocate params info (size %d)",
+		PRINT_ERROR("Unable to allocate params info (size %zd)",
 			sizeof(*params_info));
 		err = -ENOMEM;
 		goto out_err_unlock;
diff --git a/iscsi-scst/kernel/target.c b/iscsi-scst/kernel/target.c
index 807d83441..520d96f6f 100644
--- a/iscsi-scst/kernel/target.c
+++ b/iscsi-scst/kernel/target.c
@@ -151,7 +151,7 @@ int __add_target(struct iscsi_kern_target_info *info)
 
 	add_info = kmalloc(sizeof(*add_info), GFP_KERNEL);
 	if (add_info == NULL) {
-		PRINT_ERROR("Unable to allocate additional info (size %d)",
+		PRINT_ERROR("Unable to allocate additional info (size %zd)",
 			sizeof(*add_info));
 		err = -ENOMEM;
 		goto out;
diff --git a/scst/src/dev_handlers/scst_vdisk.c b/scst/src/dev_handlers/scst_vdisk.c
index 18aaab682..81e04fe05 100644
--- a/scst/src/dev_handlers/scst_vdisk.c
+++ b/scst/src/dev_handlers/scst_vdisk.c
@@ -2962,7 +2962,7 @@ static int vdev_create(struct scst_dev_type *devt,
 	virt_dev->block_shift = DEF_DISK_BLOCKSIZE_SHIFT;
 
 	if (strlen(name) >= sizeof(virt_dev->name)) {
-		PRINT_ERROR("Name %s is too long (max allowed %d)", name,
+		PRINT_ERROR("Name %s is too long (max allowed %zd)", name,
 			sizeof(virt_dev->name)-1);
 		res = -EINVAL;
 		goto out_free;