diff --git a/arch/arm/mach-mxs/ocotp.c b/arch/arm/mach-mxs/ocotp.c
index 01db731..f230d9a 100644
--- a/arch/arm/mach-mxs/ocotp.c
+++ b/arch/arm/mach-mxs/ocotp.c
@@ -174,7 +174,6 @@
 
 static struct cdev_operations mxs_ocotp_ops = {
 	.read	= mxs_ocotp_cdev_read,
-	.lseek	= dev_lseek_default,
 };
 
 static int mxs_ocotp_probe(struct device_d *dev)
diff --git a/arch/sandbox/board/hostfile.c b/arch/sandbox/board/hostfile.c
index 3fc1503..745f078 100644
--- a/arch/sandbox/board/hostfile.c
+++ b/arch/sandbox/board/hostfile.c
@@ -67,7 +67,6 @@
 static struct cdev_operations hf_fops = {
 	.read  = hf_read,
 	.write = hf_write,
-	.lseek = dev_lseek_default,
 };
 
 static int hf_probe(struct device_d *dev)
diff --git a/commands/stddev.c b/commands/stddev.c
index 4d1b6f5..2b3d084 100644
--- a/commands/stddev.c
+++ b/commands/stddev.c
@@ -27,7 +27,6 @@
 
 static struct cdev_operations zeroops = {
 	.read  = zero_read,
-	.lseek = dev_lseek_default,
 };
 
 static int zero_init(void)
@@ -55,7 +54,6 @@
 
 static struct cdev_operations fullops = {
 	.read  = full_read,
-	.lseek = dev_lseek_default,
 };
 
 static int full_init(void)
@@ -82,7 +80,6 @@
 
 static struct cdev_operations nullops = {
 	.write = null_write,
-	.lseek = dev_lseek_default,
 };
 
 static int null_init(void)
@@ -110,7 +107,6 @@
 
 static struct cdev_operations prngops = {
 	.read  = prng_read,
-	.lseek = dev_lseek_default,
 };
 
 static int prng_init(void)
diff --git a/common/block.c b/common/block.c
index 8d0de42..d90c989 100644
--- a/common/block.c
+++ b/common/block.c
@@ -350,7 +350,6 @@
 #endif
 	.close	= block_op_close,
 	.flush	= block_op_flush,
-	.lseek	= dev_lseek_default,
 };
 
 int blockdevice_register(struct block_device *blk)
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index 8bbc237..d2f8ec7 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -353,7 +353,6 @@
 }
 
 static struct cdev_operations regmap_fops = {
-	.lseek	= dev_lseek_default,
 	.read	= regmap_cdev_read,
 	.write	= regmap_cdev_write,
 };
diff --git a/drivers/eeprom/at24.c b/drivers/eeprom/at24.c
index e79031a..1fd4aea 100644
--- a/drivers/eeprom/at24.c
+++ b/drivers/eeprom/at24.c
@@ -447,7 +447,6 @@
 	at24->cdev.priv = at24;
 	at24->cdev.dev = dev;
 	at24->cdev.ops = &at24->fops;
-	at24->fops.lseek = dev_lseek_default;
 	at24->fops.read	= at24_cdev_read,
 	at24->fops.protect = at24_cdev_protect,
 	at24->cdev.size = chip.byte_len;
diff --git a/drivers/eeprom/at25.c b/drivers/eeprom/at25.c
index a9050d6..1c9ef12 100644
--- a/drivers/eeprom/at25.c
+++ b/drivers/eeprom/at25.c
@@ -235,7 +235,6 @@
 static struct cdev_operations at25_fops = {
 	.read	= at25_ee_read,
 	.write	= at25_ee_write,
-	.lseek	= dev_lseek_default,
 };
 
 static int at25_np_to_chip(struct device_d *dev,
diff --git a/drivers/hw_random/core.c b/drivers/hw_random/core.c
index 1c68a37..ee3d5a5 100644
--- a/drivers/hw_random/core.c
+++ b/drivers/hw_random/core.c
@@ -63,7 +63,6 @@
 
 static struct cdev_operations rng_chrdev_ops = {
 	.read  = rng_dev_read,
-	.lseek = dev_lseek_default,
 };
 
 static int hwrng_register_cdev(struct hwrng *rng)
diff --git a/drivers/mfd/act8846.c b/drivers/mfd/act8846.c
index 53ab70f..b7a64c7 100644
--- a/drivers/mfd/act8846.c
+++ b/drivers/mfd/act8846.c
@@ -117,7 +117,6 @@
 }
 
 static struct cdev_operations act8846_fops = {
-	.lseek	= dev_lseek_default,
 	.read	= act8846_read,
 	.write	= act8846_write,
 };
diff --git a/drivers/mfd/lp3972.c b/drivers/mfd/lp3972.c
index 42b2807..3ae9d1a 100644
--- a/drivers/mfd/lp3972.c
+++ b/drivers/mfd/lp3972.c
@@ -70,7 +70,6 @@
 }
 
 static struct cdev_operations lp_fops = {
-	.lseek	= dev_lseek_default,
 	.read	= lp_read,
 };
 
diff --git a/drivers/mfd/mc34704.c b/drivers/mfd/mc34704.c
index f15f37e..4aa02b7 100644
--- a/drivers/mfd/mc34704.c
+++ b/drivers/mfd/mc34704.c
@@ -100,7 +100,6 @@
 }
 
 static struct cdev_operations mc34704_fops = {
-	.lseek	= dev_lseek_default,
 	.read	= mc34704_read,
 	.write	= mc34704_write,
 };
diff --git a/drivers/mfd/mc9sdz60.c b/drivers/mfd/mc9sdz60.c
index 2cb38d9..408d746 100644
--- a/drivers/mfd/mc9sdz60.c
+++ b/drivers/mfd/mc9sdz60.c
@@ -112,7 +112,6 @@
 }
 
 static struct cdev_operations mc_fops = {
-	.lseek	= dev_lseek_default,
 	.read	= mc_read,
 	.write	= mc_write,
 };
diff --git a/drivers/mfd/stmpe-i2c.c b/drivers/mfd/stmpe-i2c.c
index 084e4b4..f140f1b 100644
--- a/drivers/mfd/stmpe-i2c.c
+++ b/drivers/mfd/stmpe-i2c.c
@@ -101,7 +101,6 @@
 }
 
 static struct cdev_operations stmpe_fops = {
-	.lseek	= dev_lseek_default,
 	.read	= stmpe_read,
 	.write	= stmpe_write,
 };
diff --git a/drivers/mfd/twl-core.c b/drivers/mfd/twl-core.c
index fb435f5..c3240b8 100644
--- a/drivers/mfd/twl-core.c
+++ b/drivers/mfd/twl-core.c
@@ -150,7 +150,6 @@
 }
 
 struct cdev_operations twl_fops = {
-	.lseek	= dev_lseek_default,
 	.read	= twl_read,
 	.write	= twl_write,
 };
diff --git a/drivers/misc/sram.c b/drivers/misc/sram.c
index 27b4c68..053b351 100644
--- a/drivers/misc/sram.c
+++ b/drivers/misc/sram.c
@@ -29,7 +29,6 @@
 	.read  = mem_read,
 	.write = mem_write,
 	.memmap = generic_memmap_rw,
-	.lseek = dev_lseek_default,
 };
 
 static int sram_probe(struct device_d *dev)
diff --git a/drivers/mtd/core.c b/drivers/mtd/core.c
index f44c6cf..881b5f4 100644
--- a/drivers/mtd/core.c
+++ b/drivers/mtd/core.c
@@ -462,7 +462,6 @@
 	.protect = mtd_op_protect,
 #endif
 	.ioctl  = mtd_ioctl,
-	.lseek  = dev_lseek_default,
 };
 
 static int mtd_partition_set(struct param_d *p, void *priv)
diff --git a/drivers/mtd/mtdoob.c b/drivers/mtd/mtdoob.c
index ffaf950..4aef844 100644
--- a/drivers/mtd/mtdoob.c
+++ b/drivers/mtd/mtdoob.c
@@ -66,7 +66,6 @@
 static struct cdev_operations mtd_ops_oob = {
 	.read   = mtd_op_read_oob,
 	.ioctl  = mtd_ioctl,
-	.lseek  = dev_lseek_default,
 };
 
 static int add_mtdoob_device(struct mtd_info *mtd, const char *devname, void **priv)
diff --git a/drivers/mtd/mtdraw.c b/drivers/mtd/mtdraw.c
index 6e36dc5..f63da7b 100644
--- a/drivers/mtd/mtdraw.c
+++ b/drivers/mtd/mtdraw.c
@@ -291,7 +291,6 @@
 	.read		= mtdraw_read,
 	.write		= mtdraw_write,
 	.erase		= mtdraw_erase,
-	.lseek		= dev_lseek_default,
 };
 
 static int add_mtdraw_device(struct mtd_info *mtd, const char *devname, void **priv)
diff --git a/drivers/net/e1000/eeprom.c b/drivers/net/e1000/eeprom.c
index c0f2db5..01f6add 100644
--- a/drivers/net/e1000/eeprom.c
+++ b/drivers/net/e1000/eeprom.c
@@ -1325,7 +1325,6 @@
 static struct cdev_operations e1000_invm_ops = {
 	.read	= e1000_invm_cdev_read,
 	.write	= e1000_invm_cdev_write,
-	.lseek	= dev_lseek_default,
 };
 
 static ssize_t e1000_eeprom_cdev_read(struct cdev *cdev, void *buf,
@@ -1350,7 +1349,6 @@
 
 static struct cdev_operations e1000_eeprom_ops = {
 	.read = e1000_eeprom_cdev_read,
-	.lseek = dev_lseek_default,
 };
 
 static int e1000_mtd_read_or_write(bool read,
diff --git a/drivers/net/ksz8864rmn.c b/drivers/net/ksz8864rmn.c
index 4a19dd8..85063ff 100644
--- a/drivers/net/ksz8864rmn.c
+++ b/drivers/net/ksz8864rmn.c
@@ -113,7 +113,6 @@
 static struct cdev_operations micrel_switch_ops = {
 	.read  = micel_switch_read,
 	.write = micel_switch_write,
-	.lseek = dev_lseek_default,
 };
 
 static int micrel_switch_probe(struct device_d *dev)
diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c
index e1dd8f0..3480e2f 100644
--- a/drivers/net/phy/mdio_bus.c
+++ b/drivers/net/phy/mdio_bus.c
@@ -392,7 +392,6 @@
 static struct cdev_operations phydev_ops = {
 	.read  = phydev_read,
 	.write = phydev_write,
-	.lseek = dev_lseek_default,
 };
 
 static void of_set_phy_supported(struct phy_device *phydev)
diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
index 9fd5990..6cf98f6 100644
--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
@@ -85,7 +85,6 @@
 static struct cdev_operations nvmem_chrdev_ops = {
 	.read  = nvmem_cdev_read,
 	.write  = nvmem_cdev_write,
-	.lseek = dev_lseek_default,
 };
 
 static int nvmem_register_cdev(struct nvmem_device *nvmem, const char *name)
diff --git a/drivers/video/fb.c b/drivers/video/fb.c
index 72f33a6..2d82bc0 100644
--- a/drivers/video/fb.c
+++ b/drivers/video/fb.c
@@ -228,7 +228,6 @@
 	.read	= mem_read,
 	.write	= mem_write,
 	.memmap	= generic_memmap_rw,
-	.lseek	= dev_lseek_default,
 	.ioctl	= fb_ioctl,
 	.close  = fb_close,
 	.flush  = fb_op_flush,
diff --git a/drivers/w1/slaves/w1_ds2431.c b/drivers/w1/slaves/w1_ds2431.c
index 13691d7..6446f4b 100644
--- a/drivers/w1/slaves/w1_ds2431.c
+++ b/drivers/w1/slaves/w1_ds2431.c
@@ -260,7 +260,6 @@
 static struct cdev_operations ds2431_ops = {
 	.read	= ds2431_cdev_read,
 	.write	= ds2431_cdev_write,
-	.lseek	= dev_lseek_default,
 };
 
 static int ds2431_probe(struct w1_device *dev)
diff --git a/drivers/w1/slaves/w1_ds2433.c b/drivers/w1/slaves/w1_ds2433.c
index f521a46..b24fb5b 100644
--- a/drivers/w1/slaves/w1_ds2433.c
+++ b/drivers/w1/slaves/w1_ds2433.c
@@ -159,7 +159,6 @@
 static struct cdev_operations ds2433_ops = {
 	.read	= ds2433_cdev_read,
 	.write	= ds2433_cdev_write,
-	.lseek	= dev_lseek_default,
 };
 
 static int ds2433_cdev_create(struct w1_device *dev, int size, int id)
diff --git a/fs/devfs-core.c b/fs/devfs-core.c
index f017e1c..522ef91 100644
--- a/fs/devfs-core.c
+++ b/fs/devfs-core.c
@@ -459,7 +459,6 @@
 	.read = loop_read,
 	.write = loop_write,
 	.memmap = generic_memmap_rw,
-	.lseek = dev_lseek_default,
 };
 
 struct cdev *cdev_create_loop(const char *path, ulong flags, loff_t offset)
diff --git a/fs/devfs.c b/fs/devfs.c
index 6acbbd7..5599f39 100644
--- a/fs/devfs.c
+++ b/fs/devfs.c
@@ -66,8 +66,6 @@
 		ret = cdev->ops->lseek(cdev, pos + cdev->offset);
 		if (ret < 0)
 			return ret;
-	} else {
-		return -ENOSYS;
 	}
 
 	return pos;
diff --git a/include/driver.h b/include/driver.h
index 7da184d..bcb31af 100644
--- a/include/driver.h
+++ b/include/driver.h
@@ -360,11 +360,6 @@
 int generic_memmap_ro(struct cdev *dev, void **map, int flags);
 int generic_memmap_rw(struct cdev *dev, void **map, int flags);
 
-static inline loff_t dev_lseek_default(struct cdev *cdev, loff_t ofs)
-{
-	return ofs;
-}
-
 static inline int dev_open_default(struct device_d *dev, struct filep *f)
 {
 	return 0;