diff --git a/fs/cramfs/cramfs.c b/fs/cramfs/cramfs.c
index 0b86485..3cc0fa7 100644
--- a/fs/cramfs/cramfs.c
+++ b/fs/cramfs/cramfs.c
@@ -166,11 +166,6 @@
 	return cramfs_read_file(f->f_inode, f->pos, buf, size);
 }
 
-static loff_t cramfs_lseek(struct device_d *dev, FILE *f, loff_t pos)
-{
-	return pos;
-}
-
 #if 0
 static int cramfs_info (struct device_d *dev)
 {
@@ -490,7 +485,6 @@
 
 static struct fs_driver_d cramfs_driver = {
 	.read		= cramfs_read,
-	.lseek		= cramfs_lseek,
 	.drv = {
 		.probe = cramfs_probe,
 		.remove = cramfs_remove,
diff --git a/fs/efivarfs.c b/fs/efivarfs.c
index 34a2619..d261577 100644
--- a/fs/efivarfs.c
+++ b/fs/efivarfs.c
@@ -307,11 +307,6 @@
 	return 0;
 }
 
-static loff_t efivarfs_lseek(struct device_d *dev, FILE *f, loff_t pos)
-{
-	return pos;
-}
-
 static DIR *efivarfs_opendir(struct device_d *dev, const char *pathname)
 {
 	struct efivarfs_priv *priv = dev->priv;
@@ -435,7 +430,6 @@
 	.read      = efivarfs_read,
 	.write     = efivarfs_write,
 	.truncate  = efivarfs_truncate,
-	.lseek     = efivarfs_lseek,
 	.opendir   = efivarfs_opendir,
 	.readdir   = efivarfs_readdir,
 	.closedir  = efivarfs_closedir,
diff --git a/fs/ext4/ext_barebox.c b/fs/ext4/ext_barebox.c
index 6e41b83..82d4c58 100644
--- a/fs/ext4/ext_barebox.c
+++ b/fs/ext4/ext_barebox.c
@@ -59,11 +59,6 @@
 	return ext4fs_read_file(node, f->pos, insize, buf);
 }
 
-static loff_t ext_lseek(struct device_d *dev, FILE *f, loff_t pos)
-{
-	return pos;
-}
-
 static struct inode *ext_alloc_inode(struct super_block *sb)
 {
 	struct fs_device_d *fsdev = container_of(sb, struct fs_device_d, sb);
@@ -302,7 +297,6 @@
 
 static struct fs_driver_d ext_driver = {
 	.read      = ext_read,
-	.lseek     = ext_lseek,
 	.type      = filetype_ext,
 	.flags     = 0,
 	.drv = {
diff --git a/fs/fs.c b/fs/fs.c
index bfed252..8cd965b 100644
--- a/fs/fs.c
+++ b/fs/fs.c
@@ -413,10 +413,6 @@
 
 	f = &files[fildes];
 	fsdrv = f->fsdev->driver;
-	if (!fsdrv->lseek) {
-		ret = -ENOSYS;
-		goto out;
-	}
 
 	ret = -EINVAL;
 
@@ -442,10 +438,12 @@
 		goto out;
 	}
 
-	pos = fsdrv->lseek(&f->fsdev->dev, f, pos);
-	if (IS_ERR_VALUE(pos)) {
-		errno = -pos;
-		return -1;
+	if (fsdrv->lseek) {
+		pos = fsdrv->lseek(&f->fsdev->dev, f, pos);
+		if (IS_ERR_VALUE(pos)) {
+			errno = -pos;
+			return -1;
+		}
 	}
 
 	f->pos = pos;
diff --git a/fs/omap4_usbbootfs.c b/fs/omap4_usbbootfs.c
index 51038c7..cc33287 100644
--- a/fs/omap4_usbbootfs.c
+++ b/fs/omap4_usbbootfs.c
@@ -149,11 +149,6 @@
 	return size;
 }
 
-static loff_t omap4_usbbootfs_lseek(struct device_d *dev, FILE *f, loff_t pos)
-{
-	return pos;
-}
-
 static DIR *omap4_usbbootfs_opendir(struct device_d *dev, const char *pathname)
 {
 	return NULL;
@@ -190,7 +185,6 @@
 	.open    = omap4_usbbootfs_open,
 	.close   = omap4_usbbootfs_close,
 	.read    = omap4_usbbootfs_read,
-	.lseek   = omap4_usbbootfs_lseek,
 	.opendir = omap4_usbbootfs_opendir,
 	.stat    = omap4_usbbootfs_stat,
 /*
diff --git a/fs/ramfs.c b/fs/ramfs.c
index f571cd5..153b9b6 100644
--- a/fs/ramfs.c
+++ b/fs/ramfs.c
@@ -347,11 +347,6 @@
 	return insize;
 }
 
-static loff_t ramfs_lseek(struct device_d *dev, FILE *f, loff_t pos)
-{
-	return pos;
-}
-
 static int ramfs_truncate(struct device_d *dev, FILE *f, ulong size)
 {
 	struct inode *inode = f->f_inode;
@@ -447,7 +442,6 @@
 static struct fs_driver_d ramfs_driver = {
 	.read      = ramfs_read,
 	.write     = ramfs_write,
-	.lseek     = ramfs_lseek,
 	.truncate  = ramfs_truncate,
 	.flags     = FS_DRIVER_NO_DEV,
 	.drv = {
diff --git a/fs/ratpfs.c b/fs/ratpfs.c
index e316289..dffd276 100644
--- a/fs/ratpfs.c
+++ b/fs/ratpfs.c
@@ -284,13 +284,6 @@
 	return ret;
 }
 
-static loff_t ratpfs_lseek(struct device_d __always_unused *dev,
-			  FILE *f, loff_t pos)
-{
-	pr_debug("%s\n", __func__);
-	return pos;
-}
-
 static DIR* ratpfs_opendir(struct device_d __always_unused *dev,
 			  const char *pathname)
 {
@@ -449,7 +442,6 @@
 	.open      = ratpfs_open,
 	.close     = ratpfs_close,
 	.read      = ratpfs_read,
-	.lseek     = ratpfs_lseek,
 	.opendir   = ratpfs_opendir,
 	.readdir   = ratpfs_readdir,
 	.closedir  = ratpfs_closedir,
diff --git a/fs/squashfs/squashfs.c b/fs/squashfs/squashfs.c
index 87b182a..38aff6d 100644
--- a/fs/squashfs/squashfs.c
+++ b/fs/squashfs/squashfs.c
@@ -231,11 +231,6 @@
 	return insize;
 }
 
-static loff_t squashfs_lseek(struct device_d *dev, FILE *f, loff_t pos)
-{
-	return pos;
-}
-
 struct squashfs_dir {
 	struct file file;
 	struct dentry dentry;
@@ -251,7 +246,6 @@
 	.open		= squashfs_open,
 	.close		= squashfs_close,
 	.read		= squashfs_read,
-	.lseek		= squashfs_lseek,
 	.type		= filetype_squashfs,
 	.drv = {
 		.probe = squashfs_probe,
diff --git a/fs/ubifs/ubifs.c b/fs/ubifs/ubifs.c
index ec6d008..494b1f2 100644
--- a/fs/ubifs/ubifs.c
+++ b/fs/ubifs/ubifs.c
@@ -394,11 +394,6 @@
 	return insize;
 }
 
-static loff_t ubifs_lseek(struct device_d *dev, FILE *f, loff_t pos)
-{
-	return pos;
-}
-
 static void ubifs_set_rootarg(struct ubifs_priv *priv, struct fs_device_d *fsdev)
 {
 	struct ubi_volume_info vi = {};
@@ -475,7 +470,6 @@
 	.open      = ubifs_open,
 	.close     = ubifs_close,
 	.read      = ubifs_read,
-	.lseek     = ubifs_lseek,
 	.type = filetype_ubifs,
 	.flags     = 0,
 	.drv = {