diff --git a/board/sunxi/board.c b/board/sunxi/board.c
index 15b7af6..80eae9c 100644
--- a/board/sunxi/board.c
+++ b/board/sunxi/board.c
@@ -337,8 +337,8 @@
 	if (!sunxi_mmc_has_egon_boot_signature(mmc0) &&
 	    sunxi_mmc_has_egon_boot_signature(mmc1)) {
 		/* Booting from emmc / mmc2, swap */
-		mmc0->block_dev.dev = 1;
-		mmc1->block_dev.dev = 0;
+		mmc0->block_dev.devnum = 1;
+		mmc1->block_dev.devnum = 0;
 	}
 #endif
 
diff --git a/cmd/disk.c b/cmd/disk.c
index 0883c79..27ed115 100644
--- a/cmd/disk.c
+++ b/cmd/disk.c
@@ -45,7 +45,7 @@
 		return 1;
 	}
 
-	dev = dev_desc->dev;
+	dev = dev_desc->devnum;
 	bootstage_mark(BOOTSTAGE_ID_IDE_TYPE);
 
 	printf("\nLoading from %s device %d, partition %d: "
diff --git a/cmd/fat.c b/cmd/fat.c
index 18a1be9..4e20746 100644
--- a/cmd/fat.c
+++ b/cmd/fat.c
@@ -81,7 +81,7 @@
 	if (part < 0)
 		return 1;
 
-	dev = dev_desc->dev;
+	dev = dev_desc->devnum;
 	if (fat_set_blk_dev(dev_desc, &info) != 0) {
 		printf("\n** Unable to use %s %d:%d for fatinfo **\n",
 			argv[1], dev, part);
@@ -118,7 +118,7 @@
 	if (part < 0)
 		return 1;
 
-	dev = dev_desc->dev;
+	dev = dev_desc->devnum;
 
 	if (fat_set_blk_dev(dev_desc, &info) != 0) {
 		printf("\n** Unable to use %s %d:%d for fatwrite **\n",
diff --git a/cmd/ide.c b/cmd/ide.c
index 01b91b5..dfd5548 100644
--- a/cmd/ide.c
+++ b/cmd/ide.c
@@ -418,7 +418,7 @@
 		int led = (IDE_BUS(i) == 0) ? LED_IDE1 : LED_IDE2;
 		ide_dev_desc[i].type = DEV_TYPE_UNKNOWN;
 		ide_dev_desc[i].if_type = IF_TYPE_IDE;
-		ide_dev_desc[i].dev = i;
+		ide_dev_desc[i].devnum = i;
 		ide_dev_desc[i].part_type = PART_TYPE_UNKNOWN;
 		ide_dev_desc[i].blksz = 0;
 		ide_dev_desc[i].log2blksz =
@@ -551,7 +551,7 @@
 #endif
 	int device;
 
-	device = dev_desc->dev;
+	device = dev_desc->devnum;
 	printf("  Device %d: ", device);
 
 	ide_led(DEVICE_LED(device), 1);	/* LED on       */
@@ -716,7 +716,7 @@
 ulong ide_read(struct blk_desc *block_dev, lbaint_t blknr, lbaint_t blkcnt,
 	       void *buffer)
 {
-	int device = block_dev->dev;
+	int device = block_dev->devnum;
 	ulong n = 0;
 	unsigned char c;
 	unsigned char pwrsave = 0;	/* power save */
@@ -842,7 +842,7 @@
 ulong ide_write(struct blk_desc *block_dev, lbaint_t blknr, lbaint_t blkcnt,
 		const void *buffer)
 {
-	int device = block_dev->dev;
+	int device = block_dev->devnum;
 	ulong n = 0;
 	unsigned char c;
 
@@ -1308,7 +1308,7 @@
 	unsigned char c;
 	int device;
 
-	device = dev_desc->dev;
+	device = dev_desc->devnum;
 	dev_desc->type = DEV_TYPE_UNKNOWN;	/* not yet valid */
 	dev_desc->block_read = atapi_read;
 
@@ -1397,7 +1397,7 @@
 ulong atapi_read(struct blk_desc *block_dev, lbaint_t blknr, lbaint_t blkcnt,
 		 void *buffer)
 {
-	int device = block_dev->dev;
+	int device = block_dev->devnum;
 	ulong n = 0;
 	unsigned char ccb[12];	/* Command descriptor block */
 	ulong cnt;
diff --git a/cmd/mmc_spi.c b/cmd/mmc_spi.c
index a2138b8..0c44d06 100644
--- a/cmd/mmc_spi.c
+++ b/cmd/mmc_spi.c
@@ -72,8 +72,8 @@
 		printf("Failed to create MMC Device\n");
 		return 1;
 	}
-	printf("%s: %d at %u:%u hz %u mode %u\n", mmc->cfg->name, mmc->block_dev.dev,
-	       bus, cs, speed, mode);
+	printf("%s: %d at %u:%u hz %u mode %u\n", mmc->cfg->name,
+	       mmc->block_dev.devnum, bus, cs, speed, mode);
 	mmc_init(mmc);
 	return 0;
 
diff --git a/cmd/reiser.c b/cmd/reiser.c
index a717956..cbdad36 100644
--- a/cmd/reiser.c
+++ b/cmd/reiser.c
@@ -48,7 +48,7 @@
 	    filename = argv[3];
 	}
 
-	dev = dev_desc->dev;
+	dev = dev_desc->devnum;
 	PRINTF("Using device %s %d:%d, directory: %s\n", argv[1], dev, part, filename);
 
 	reiserfs_set_blk_dev(dev_desc, &info);
@@ -126,7 +126,7 @@
 	if (part < 0)
 		return 1;
 
-	dev = dev_desc->dev;
+	dev = dev_desc->devnum;
 
 	printf("Loading file \"%s\" from %s device %d%c%c\n",
 		filename, argv[1], dev,
diff --git a/cmd/sata.c b/cmd/sata.c
index 8b1f19c..c8de9a3 100644
--- a/cmd/sata.c
+++ b/cmd/sata.c
@@ -21,13 +21,13 @@
 static unsigned long sata_bread(struct blk_desc *block_dev, lbaint_t start,
 				lbaint_t blkcnt, void *dst)
 {
-	return sata_read(block_dev->dev, start, blkcnt, dst);
+	return sata_read(block_dev->devnum, start, blkcnt, dst);
 }
 
 static unsigned long sata_bwrite(struct blk_desc *block_dev, lbaint_t start,
 				 lbaint_t blkcnt, const void *buffer)
 {
-	return sata_write(block_dev->dev, start, blkcnt, buffer);
+	return sata_write(block_dev->devnum, start, blkcnt, buffer);
 }
 
 int __sata_initialize(void)
@@ -38,7 +38,7 @@
 	for (i = 0; i < CONFIG_SYS_SATA_MAX_DEVICE; i++) {
 		memset(&sata_dev_desc[i], 0, sizeof(struct blk_desc));
 		sata_dev_desc[i].if_type = IF_TYPE_SATA;
-		sata_dev_desc[i].dev = i;
+		sata_dev_desc[i].devnum = i;
 		sata_dev_desc[i].part_type = PART_TYPE_UNKNOWN;
 		sata_dev_desc[i].type = DEV_TYPE_HARDDISK;
 		sata_dev_desc[i].lba = 0;
diff --git a/cmd/scsi.c b/cmd/scsi.c
index de0651c..951d1e5 100644
--- a/cmd/scsi.c
+++ b/cmd/scsi.c
@@ -99,7 +99,7 @@
 		scsi_dev_desc[i].revision[0]=0;
 		scsi_dev_desc[i].removable = false;
 		scsi_dev_desc[i].if_type=IF_TYPE_SCSI;
-		scsi_dev_desc[i].dev=i;
+		scsi_dev_desc[i].devnum = i;
 		scsi_dev_desc[i].part_type=PART_TYPE_UNKNOWN;
 		scsi_dev_desc[i].block_read=scsi_read;
 		scsi_dev_desc[i].block_write = scsi_write;
@@ -379,7 +379,7 @@
 static ulong scsi_read(struct blk_desc *block_dev, lbaint_t blknr,
 		       lbaint_t blkcnt, void *buffer)
 {
-	int device = block_dev->dev;
+	int device = block_dev->devnum;
 	lbaint_t start, blks;
 	uintptr_t buf_addr;
 	unsigned short smallblks = 0;
@@ -446,7 +446,7 @@
 static ulong scsi_write(struct blk_desc *block_dev, lbaint_t blknr,
 			lbaint_t blkcnt, const void *buffer)
 {
-	int device = block_dev->dev;
+	int device = block_dev->devnum;
 	lbaint_t start, blks;
 	uintptr_t buf_addr;
 	unsigned short smallblks;
diff --git a/cmd/usb_mass_storage.c b/cmd/usb_mass_storage.c
index 59bb4ee..14eed98 100644
--- a/cmd/usb_mass_storage.c
+++ b/cmd/usb_mass_storage.c
@@ -100,7 +100,7 @@
 		ums[ums_count].block_dev = *block_dev;
 
 		printf("UMS: LUN %d, dev %d, hwpart %d, sector %#x, count %#x\n",
-		       ums_count, ums[ums_count].block_dev.dev,
+		       ums_count, ums[ums_count].block_dev.devnum,
 		       ums[ums_count].block_dev.hwpart,
 		       ums[ums_count].start_sector,
 		       ums[ums_count].num_sectors);
diff --git a/cmd/zfs.c b/cmd/zfs.c
index bb61afd..93067a9 100644
--- a/cmd/zfs.c
+++ b/cmd/zfs.c
@@ -84,7 +84,7 @@
 	if (part < 0)
 		return 1;
 
-	dev = dev_desc->dev;
+	dev = dev_desc->devnum;
 	printf("Loading file \"%s\" from %s device %d%c%c\n",
 		filename, argv[1], dev,
 		part ? ':' : ' ', part ? part + '0' : ' ');
diff --git a/common/env_fat.c b/common/env_fat.c
index 2f22710..75616d4 100644
--- a/common/env_fat.c
+++ b/common/env_fat.c
@@ -54,7 +54,7 @@
 	if (part < 0)
 		return 1;
 
-	dev = dev_desc->dev;
+	dev = dev_desc->devnum;
 	if (fat_set_blk_dev(dev_desc, &info) != 0) {
 		printf("\n** Unable to use %s %d:%d for saveenv **\n",
 		       FAT_ENV_INTERFACE, dev, part);
@@ -88,7 +88,7 @@
 	if (part < 0)
 		goto err_env_relocate;
 
-	dev = dev_desc->dev;
+	dev = dev_desc->devnum;
 	if (fat_set_blk_dev(dev_desc, &info) != 0) {
 		printf("\n** Unable to use %s %d:%d for loading the env **\n",
 		       FAT_ENV_INTERFACE, dev, part);
diff --git a/common/fb_mmc.c b/common/fb_mmc.c
index d5c9135..da7949f 100644
--- a/common/fb_mmc.c
+++ b/common/fb_mmc.c
@@ -86,7 +86,7 @@
 
 	blks = dev_desc->block_write(dev_desc, info->start, blkcnt, buffer);
 	if (blks != blkcnt) {
-		error("failed writing to device %d\n", dev_desc->dev);
+		error("failed writing to device %d\n", dev_desc->devnum);
 		fastboot_fail(response_str, "failed writing to device");
 		return;
 	}
@@ -207,7 +207,7 @@
 
 	blks = dev_desc->block_erase(dev_desc, blks_start, blks_size);
 	if (blks != blks_size) {
-		error("failed erasing from device %d", dev_desc->dev);
+		error("failed erasing from device %d", dev_desc->devnum);
 		fastboot_fail(response_str, "failed erasing from device");
 		return;
 	}
diff --git a/common/usb_storage.c b/common/usb_storage.c
index e105a95..60531e2 100644
--- a/common/usb_storage.c
+++ b/common/usb_storage.c
@@ -192,7 +192,7 @@
 			blkdev = &usb_dev_desc[usb_max_devs];
 			memset(blkdev, '\0', sizeof(struct blk_desc));
 			blkdev->if_type = IF_TYPE_USB;
-			blkdev->dev = usb_max_devs;
+			blkdev->devnum = usb_max_devs;
 			blkdev->part_type = PART_TYPE_UNKNOWN;
 			blkdev->target = 0xff;
 			blkdev->type = DEV_TYPE_UNKNOWN;
@@ -1029,7 +1029,7 @@
 static unsigned long usb_stor_read(struct blk_desc *block_dev, lbaint_t blknr,
 				   lbaint_t blkcnt, void *buffer)
 {
-	int device = block_dev->dev;
+	int device = block_dev->devnum;
 	lbaint_t start, blks;
 	uintptr_t buf_addr;
 	unsigned short smallblks;
@@ -1100,7 +1100,7 @@
 static unsigned long usb_stor_write(struct blk_desc *block_dev, lbaint_t blknr,
 				    lbaint_t blkcnt, const void *buffer)
 {
-	int device = block_dev->dev;
+	int device = block_dev->devnum;
 	lbaint_t start, blks;
 	uintptr_t buf_addr;
 	unsigned short smallblks;
diff --git a/disk/part.c b/disk/part.c
index 9a78cce..2a46050 100644
--- a/disk/part.c
+++ b/disk/part.c
@@ -108,7 +108,7 @@
 				return dev_desc;
 			if (!select_hwpart)
 				return NULL;
-			ret = select_hwpart(dev_desc->dev, hwpart);
+			ret = select_hwpart(dev_desc->devnum, hwpart);
 			if (ret < 0)
 				return NULL;
 			return dev_desc;
@@ -325,7 +325,7 @@
 		break;
 	}
 	printf (" device %d  --   Partition Type: %s\n\n",
-			dev_desc->dev, type);
+			dev_desc->devnum, type);
 #endif /* any CONFIG_..._PARTITION */
 }
 
@@ -457,10 +457,6 @@
 	int part;
 	disk_partition_t tmpinfo;
 
-#if defined CONFIG_SANDBOX && defined CONFIG_CMD_UBIFS
-#error Only one of CONFIG_SANDBOX and CONFIG_CMD_UBIFS may be selected
-#endif
-
 #ifdef CONFIG_SANDBOX
 	/*
 	 * Special-case a pseudo block device "hostfs", to allow access to the
diff --git a/disk/part_dos.c b/disk/part_dos.c
index 4a56391..5f8d949 100644
--- a/disk/part_dos.c
+++ b/disk/part_dos.c
@@ -114,7 +114,7 @@
 	if (dev_desc->block_read(dev_desc, ext_part_sector, 1,
 				 (ulong *)buffer) != 1) {
 		printf ("** Can't read partition table on %d:" LBAFU " **\n",
-			dev_desc->dev, ext_part_sector);
+			dev_desc->devnum, ext_part_sector);
 		return;
 	}
 	i=test_block_type(buffer);
@@ -180,7 +180,7 @@
 	if (dev_desc->block_read(dev_desc, ext_part_sector, 1,
 				 (ulong *)buffer) != 1) {
 		printf ("** Can't read partition table on %d:" LBAFU " **\n",
-			dev_desc->dev, ext_part_sector);
+			dev_desc->devnum, ext_part_sector);
 		return -1;
 	}
 	if (buffer[DOS_PART_MAGIC_OFFSET] != 0x55 ||
@@ -215,24 +215,29 @@
 				case IF_TYPE_IDE:
 				case IF_TYPE_SATA:
 				case IF_TYPE_ATAPI:
-					sprintf ((char *)info->name, "hd%c%d",
-						'a' + dev_desc->dev, part_num);
+					sprintf((char *)info->name, "hd%c%d",
+						'a' + dev_desc->devnum,
+						part_num);
 					break;
 				case IF_TYPE_SCSI:
-					sprintf ((char *)info->name, "sd%c%d",
-						'a' + dev_desc->dev, part_num);
+					sprintf((char *)info->name, "sd%c%d",
+						'a' + dev_desc->devnum,
+						part_num);
 					break;
 				case IF_TYPE_USB:
-					sprintf ((char *)info->name, "usbd%c%d",
-						'a' + dev_desc->dev, part_num);
+					sprintf((char *)info->name, "usbd%c%d",
+						'a' + dev_desc->devnum,
+						part_num);
 					break;
 				case IF_TYPE_DOC:
-					sprintf ((char *)info->name, "docd%c%d",
-						'a' + dev_desc->dev, part_num);
+					sprintf((char *)info->name, "docd%c%d",
+						'a' + dev_desc->devnum,
+						part_num);
 					break;
 				default:
-					sprintf ((char *)info->name, "xx%c%d",
-						'a' + dev_desc->dev, part_num);
+					sprintf((char *)info->name, "xx%c%d",
+						'a' + dev_desc->devnum,
+						part_num);
 					break;
 			}
 			/* sprintf(info->type, "%d, pt->sys_ind); */
diff --git a/disk/part_efi.c b/disk/part_efi.c
index 209a671..ae8cd7e 100644
--- a/disk/part_efi.c
+++ b/disk/part_efi.c
@@ -356,7 +356,7 @@
 	/* Write MBR sector to the MMC device */
 	if (dev_desc->block_write(dev_desc, 0, 1, p_mbr) != 1) {
 		printf("** Can't write to device %d **\n",
-			dev_desc->dev);
+			dev_desc->devnum);
 		return -1;
 	}
 
@@ -410,7 +410,7 @@
 	return 0;
 
  err:
-	printf("** Can't write to device %d **\n", dev_desc->dev);
+	printf("** Can't write to device %d **\n", dev_desc->devnum);
 	return -1;
 }
 
diff --git a/disk/part_iso.c b/disk/part_iso.c
index a1cf358..c78ae21 100644
--- a/disk/part_iso.c
+++ b/disk/part_iso.c
@@ -68,13 +68,13 @@
 	if(ppr->desctype!=0x01) {
 		if(verb)
 			printf ("** First descriptor is NOT a primary desc on %d:%d **\n",
-				dev_desc->dev, part_num);
+				dev_desc->devnum, part_num);
 		return (-1);
 	}
 	if(strncmp((char *)ppr->stand_ident,"CD001",5)!=0) {
 		if(verb)
 			printf ("** Wrong ISO Ident: %s on %d:%d **\n",
-				ppr->stand_ident,dev_desc->dev, part_num);
+				ppr->stand_ident, dev_desc->devnum, part_num);
 		return (-1);
 	}
 	lastsect= ((ppr->firstsek_LEpathtab1_LE & 0x000000ff)<<24) +
@@ -92,7 +92,7 @@
 		if(ppr->desctype==0xff) {
 			if(verb)
 				printf ("** No valid boot catalog found on %d:%d **\n",
-					dev_desc->dev, part_num);
+					dev_desc->devnum, part_num);
 			return (-1);
 		}
 	}
@@ -100,7 +100,7 @@
 	if(strncmp(pbr->ident_str,"EL TORITO SPECIFICATION",23)!=0) {
 		if(verb)
 			printf ("** Wrong El Torito ident: %s on %d:%d **\n",
-				pbr->ident_str,dev_desc->dev, part_num);
+				pbr->ident_str, dev_desc->devnum, part_num);
 		return (-1);
 	}
 	bootaddr=le32_to_int(pbr->pointer);
@@ -108,7 +108,7 @@
 	if (dev_desc->block_read(dev_desc, bootaddr, 1, (ulong *)tmpbuf) != 1) {
 		if(verb)
 			printf ("** Can't read Boot Entry at %lX on %d:%d **\n",
-				bootaddr,dev_desc->dev, part_num);
+				bootaddr, dev_desc->devnum, part_num);
 		return (-1);
 	}
 	chksum=0;
@@ -117,21 +117,21 @@
 		chksum+=((chksumbuf[i] &0xff)<<8)+((chksumbuf[i] &0xff00)>>8);
 	if(chksum!=0) {
 		if(verb)
-			printf ("** Checksum Error in booting catalog validation entry on %d:%d **\n",
-				dev_desc->dev, part_num);
+			printf("** Checksum Error in booting catalog validation entry on %d:%d **\n",
+			       dev_desc->devnum, part_num);
 		return (-1);
 	}
 	if((pve->key[0]!=0x55)||(pve->key[1]!=0xAA)) {
 		if(verb)
 			printf ("** Key 0x55 0xAA error on %d:%d **\n",
-				dev_desc->dev, part_num);
+				dev_desc->devnum, part_num);
 		return(-1);
 	}
 #ifdef CHECK_FOR_POWERPC_PLATTFORM
 	if(pve->platform!=0x01) {
 		if(verb)
 			printf ("** No PowerPC platform CD on %d:%d **\n",
-				dev_desc->dev, part_num);
+				dev_desc->devnum, part_num);
 		return(-1);
 	}
 #endif
@@ -144,23 +144,23 @@
 		case IF_TYPE_SATA:
 		case IF_TYPE_ATAPI:
 			sprintf ((char *)info->name, "hd%c%d",
-				'a' + dev_desc->dev, part_num);
+				'a' + dev_desc->devnum, part_num);
 			break;
 		case IF_TYPE_SCSI:
 			sprintf ((char *)info->name, "sd%c%d",
-				'a' + dev_desc->dev, part_num);
+				'a' + dev_desc->devnum, part_num);
 			break;
 		case IF_TYPE_USB:
 			sprintf ((char *)info->name, "usbd%c%d",
-				'a' + dev_desc->dev, part_num);
+				'a' + dev_desc->devnum, part_num);
 			break;
 		case IF_TYPE_DOC:
 			sprintf ((char *)info->name, "docd%c%d",
-				'a' + dev_desc->dev, part_num);
+				'a' + dev_desc->devnum, part_num);
 			break;
 		default:
 			sprintf ((char *)info->name, "xx%c%d",
-				'a' + dev_desc->dev, part_num);
+				'a' + dev_desc->devnum, part_num);
 			break;
 	}
 	/* the bootcatalog (including validation Entry) is limited to 2048Bytes
@@ -184,7 +184,7 @@
 		else {
 			if(verb)
 				printf ("** Partition %d not found on device %d **\n",
-					part_num,dev_desc->dev);
+					part_num, dev_desc->devnum);
 			return(-1);
 		}
 	}
@@ -192,13 +192,13 @@
 	 * searched w/o succsess */
 	if(verb)
 		printf ("** Partition %d not found on device %d **\n",
-			part_num,dev_desc->dev);
+			part_num, dev_desc->devnum);
 	return(-1);
 found:
 	if(pide->boot_ind!=0x88) {
 		if(verb)
-			printf ("** Partition %d is not bootable on device %d **\n",
-				part_num,dev_desc->dev);
+			printf("** Partition %d is not bootable on device %d **\n",
+			       part_num, dev_desc->devnum);
 		return (-1);
 	}
 	switch(pide->boot_media) {
@@ -229,7 +229,8 @@
 	int i;
 
 	if (part_get_info_iso_verb(dev_desc, 0, &info, 0) == -1) {
-		printf("** No boot partition found on device %d **\n",dev_desc->dev);
+		printf("** No boot partition found on device %d **\n",
+		       dev_desc->devnum);
 		return;
 	}
 	printf("Part   Start     Sect x Size Type\n");
diff --git a/disk/part_mac.c b/disk/part_mac.c
index 6192723..07bbc19 100644
--- a/disk/part_mac.c
+++ b/disk/part_mac.c
@@ -108,14 +108,14 @@
 		printf ("%4ld: ", i);
 		if (dev_desc->block_read(dev_desc, i, 1, (ulong *)mpart) != 1) {
 			printf ("** Can't read Partition Map on %d:%ld **\n",
-				dev_desc->dev, i);
+				dev_desc->devnum, i);
 			return;
 		}
 
 		if (mpart->signature != MAC_PARTITION_MAGIC) {
-			printf ("** Bad Signature on %d:%ld - "
-				"expected 0x%04x, got 0x%04x\n",
-				dev_desc->dev, i, MAC_PARTITION_MAGIC, mpart->signature);
+			printf("** Bad Signature on %d:%ld - expected 0x%04x, got 0x%04x\n",
+			       dev_desc->devnum, i, MAC_PARTITION_MAGIC,
+			       mpart->signature);
 			return;
 		}
 
@@ -184,14 +184,14 @@
 		 */
 		if (dev_desc->block_read(dev_desc, n, 1, (ulong *)pdb_p) != 1) {
 			printf ("** Can't read Partition Map on %d:%d **\n",
-				dev_desc->dev, n);
+				dev_desc->devnum, n);
 			return (-1);
 		}
 
 		if (pdb_p->signature != MAC_PARTITION_MAGIC) {
-			printf ("** Bad Signature on %d:%d: "
-				"expected 0x%04x, got 0x%04x\n",
-				dev_desc->dev, n, MAC_PARTITION_MAGIC, pdb_p->signature);
+			printf("** Bad Signature on %d:%d: expected 0x%04x, got 0x%04x\n",
+			       dev_desc->devnum, n, MAC_PARTITION_MAGIC,
+			       pdb_p->signature);
 			return (-1);
 		}
 
@@ -200,9 +200,9 @@
 
 		if ((part < 1) || (part > pdb_p->map_count)) {
 			printf ("** Invalid partition %d:%d [%d:1...%d:%d only]\n",
-				dev_desc->dev, part,
-				dev_desc->dev,
-				dev_desc->dev, pdb_p->map_count);
+				dev_desc->devnum, part,
+				dev_desc->devnum,
+				dev_desc->devnum, pdb_p->map_count);
 			return (-1);
 		}
 
diff --git a/drivers/block/sandbox.c b/drivers/block/sandbox.c
index 093e133..14d3e38 100644
--- a/drivers/block/sandbox.c
+++ b/drivers/block/sandbox.c
@@ -26,7 +26,7 @@
 				     unsigned long start, lbaint_t blkcnt,
 				     void *buffer)
 {
-	int dev = block_dev->dev;
+	int dev = block_dev->devnum;
 	struct host_block_dev *host_dev = find_host_device(dev);
 
 	if (!host_dev)
@@ -48,7 +48,7 @@
 				      unsigned long start, lbaint_t blkcnt,
 				      const void *buffer)
 {
-	int dev = block_dev->dev;
+	int dev = block_dev->devnum;
 	struct host_block_dev *host_dev = find_host_device(dev);
 	if (os_lseek(host_dev->fd,
 		     start * host_dev->blk_dev.blksz,
@@ -96,7 +96,7 @@
 	blk_dev->lba = os_lseek(host_dev->fd, 0, OS_SEEK_END) / blk_dev->blksz;
 	blk_dev->block_read = host_block_read;
 	blk_dev->block_write = host_block_write;
-	blk_dev->dev = dev;
+	blk_dev->devnum = dev;
 	blk_dev->part_type = PART_TYPE_UNKNOWN;
 	part_init(blk_dev);
 
diff --git a/drivers/block/systemace.c b/drivers/block/systemace.c
index b921dcd..09fe834 100644
--- a/drivers/block/systemace.c
+++ b/drivers/block/systemace.c
@@ -111,7 +111,7 @@
 	   not yet initialized. In that case, fill it in. */
 	if (systemace_dev.blksz == 0) {
 		systemace_dev.if_type = IF_TYPE_UNKNOWN;
-		systemace_dev.dev = 0;
+		systemace_dev.devnum = 0;
 		systemace_dev.part_type = PART_TYPE_UNKNOWN;
 		systemace_dev.type = DEV_TYPE_HARDDISK;
 		systemace_dev.blksz = 512;
diff --git a/drivers/mmc/arm_pl180_mmci.c b/drivers/mmc/arm_pl180_mmci.c
index 5ef7ff7..8f2694f 100644
--- a/drivers/mmc/arm_pl180_mmci.c
+++ b/drivers/mmc/arm_pl180_mmci.c
@@ -375,7 +375,7 @@
 	if (mmc == NULL)
 		return -1;
 
-	debug("registered mmc interface number is:%d\n", mmc->block_dev.dev);
+	debug("registered mmc interface number is:%d\n", mmc->block_dev.devnum);
 
 	return 0;
 }
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index 94afbb1..8b2e606 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -182,7 +182,7 @@
 	list_for_each(entry, &mmc_devices) {
 		m = list_entry(entry, struct mmc, link);
 
-		if (m->block_dev.dev == dev_num)
+		if (m->block_dev.devnum == dev_num)
 			return m;
 	}
 
@@ -237,7 +237,7 @@
 static ulong mmc_bread(struct blk_desc *block_dev, lbaint_t start,
 		       lbaint_t blkcnt, void *dst)
 {
-	int dev_num = block_dev->dev;
+	int dev_num = block_dev->devnum;
 	int err;
 	lbaint_t cur, blocks_todo = blkcnt;
 
@@ -1556,7 +1556,7 @@
 	mmc->dsr = 0xffffffff;
 	/* Setup the universal parts of the block interface just once */
 	mmc->block_dev.if_type = IF_TYPE_MMC;
-	mmc->block_dev.dev = cur_dev_num++;
+	mmc->block_dev.devnum = cur_dev_num++;
 	mmc->block_dev.removable = 1;
 	mmc->block_dev.block_read = mmc_bread;
 	mmc->block_dev.block_write = mmc_bwrite;
@@ -1728,7 +1728,7 @@
 		else
 			mmc_type = NULL;
 
-		printf("%s: %d", m->cfg->name, m->block_dev.dev);
+		printf("%s: %d", m->cfg->name, m->block_dev.devnum);
 		if (mmc_type)
 			printf(" (%s)", mmc_type);
 
diff --git a/drivers/mmc/mmc_write.c b/drivers/mmc/mmc_write.c
index 54e60db..7b186f8 100644
--- a/drivers/mmc/mmc_write.c
+++ b/drivers/mmc/mmc_write.c
@@ -68,7 +68,7 @@
 unsigned long mmc_berase(struct blk_desc *block_dev, lbaint_t start,
 			 lbaint_t blkcnt)
 {
-	int dev_num = block_dev->dev;
+	int dev_num = block_dev->devnum;
 	int err = 0;
 	u32 start_rem, blkcnt_rem;
 	struct mmc *mmc = find_mmc_device(dev_num);
@@ -174,7 +174,7 @@
 ulong mmc_bwrite(struct blk_desc *block_dev, lbaint_t start, lbaint_t blkcnt,
 		 const void *src)
 {
-	int dev_num = block_dev->dev;
+	int dev_num = block_dev->devnum;
 	lbaint_t cur, blocks_todo = blkcnt;
 	int err;
 
diff --git a/drivers/mmc/mxsmmc.c b/drivers/mmc/mxsmmc.c
index 31fb3ab..9fa87d5 100644
--- a/drivers/mmc/mxsmmc.c
+++ b/drivers/mmc/mxsmmc.c
@@ -142,7 +142,7 @@
 	uint32_t ctrl0;
 	int ret;
 
-	debug("MMC%d: CMD%d\n", mmc->block_dev.dev, cmd->cmdidx);
+	debug("MMC%d: CMD%d\n", mmc->block_dev.devnum, cmd->cmdidx);
 
 	/* Check bus busy */
 	timeout = MXSMMC_MAX_TIMEOUT;
@@ -157,13 +157,13 @@
 	}
 
 	if (!timeout) {
-		printf("MMC%d: Bus busy timeout!\n", mmc->block_dev.dev);
+		printf("MMC%d: Bus busy timeout!\n", mmc->block_dev.devnum);
 		return TIMEOUT;
 	}
 
 	/* See if card is present */
 	if (!mxsmmc_cd(priv)) {
-		printf("MMC%d: No card detected!\n", mmc->block_dev.dev);
+		printf("MMC%d: No card detected!\n", mmc->block_dev.devnum);
 		return NO_CARD_ERR;
 	}
 
@@ -200,9 +200,9 @@
 		if (data->flags & MMC_DATA_READ) {
 			ctrl0 |= SSP_CTRL0_READ;
 		} else if (priv->mmc_is_wp &&
-			priv->mmc_is_wp(mmc->block_dev.dev)) {
+			priv->mmc_is_wp(mmc->block_dev.devnum)) {
 			printf("MMC%d: Can not write a locked card!\n",
-				mmc->block_dev.dev);
+				mmc->block_dev.devnum);
 			return UNUSABLE_ERR;
 		}
 
@@ -243,21 +243,21 @@
 
 	if (!timeout) {
 		printf("MMC%d: Command %d busy\n",
-			mmc->block_dev.dev, cmd->cmdidx);
+			mmc->block_dev.devnum, cmd->cmdidx);
 		return TIMEOUT;
 	}
 
 	/* Check command timeout */
 	if (reg & SSP_STATUS_RESP_TIMEOUT) {
 		printf("MMC%d: Command %d timeout (status 0x%08x)\n",
-			mmc->block_dev.dev, cmd->cmdidx, reg);
+			mmc->block_dev.devnum, cmd->cmdidx, reg);
 		return TIMEOUT;
 	}
 
 	/* Check command errors */
 	if (reg & (SSP_STATUS_RESP_CRC_ERR | SSP_STATUS_RESP_ERR)) {
 		printf("MMC%d: Command %d error (status 0x%08x)!\n",
-			mmc->block_dev.dev, cmd->cmdidx, reg);
+			mmc->block_dev.devnum, cmd->cmdidx, reg);
 		return COMM_ERR;
 	}
 
@@ -279,14 +279,14 @@
 		if (ret) {
 			printf("MMC%d: Data timeout with command %d "
 				"(status 0x%08x)!\n",
-				mmc->block_dev.dev, cmd->cmdidx, reg);
+				mmc->block_dev.devnum, cmd->cmdidx, reg);
 			return ret;
 		}
 	} else {
 		ret = mxsmmc_send_cmd_dma(priv, data);
 		if (ret) {
 			printf("MMC%d: DMA transfer failed\n",
-				mmc->block_dev.dev);
+				mmc->block_dev.devnum);
 			return ret;
 		}
 	}
@@ -297,7 +297,7 @@
 		(SSP_STATUS_TIMEOUT | SSP_STATUS_DATA_CRC_ERR |
 		SSP_STATUS_FIFO_OVRFLW | SSP_STATUS_FIFO_UNDRFLW)) {
 		printf("MMC%d: Data error with command %d (status 0x%08x)!\n",
-			mmc->block_dev.dev, cmd->cmdidx, reg);
+			mmc->block_dev.devnum, cmd->cmdidx, reg);
 		return COMM_ERR;
 	}
 
@@ -330,7 +330,7 @@
 			SSP_CTRL0_BUS_WIDTH_MASK, priv->buswidth);
 
 	debug("MMC%d: Set %d bits bus width\n",
-		mmc->block_dev.dev, mmc->bus_width);
+		mmc->block_dev.devnum, mmc->bus_width);
 }
 
 static int mxsmmc_init(struct mmc *mmc)
diff --git a/drivers/mmc/omap_hsmmc.c b/drivers/mmc/omap_hsmmc.c
index 5038a9f..5f2db3b 100644
--- a/drivers/mmc/omap_hsmmc.c
+++ b/drivers/mmc/omap_hsmmc.c
@@ -177,11 +177,11 @@
 
 #if defined(CONFIG_OMAP44XX) && defined(CONFIG_TWL6030_POWER)
 	/* PBIAS config needed for MMC1 only */
-	if (mmc->block_dev.dev == 0)
+	if (mmc->block_dev.devnum == 0)
 		omap4_vmmc_pbias_config(mmc);
 #endif
 #if defined(CONFIG_OMAP54XX) && defined(CONFIG_PALMAS_POWER)
-	if (mmc->block_dev.dev == 0)
+	if (mmc->block_dev.devnum == 0)
 		omap5_pbias_config(mmc);
 #endif
 
diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c
index 8586d89..ef7e615 100644
--- a/drivers/mmc/sdhci.c
+++ b/drivers/mmc/sdhci.c
@@ -137,7 +137,7 @@
 	int trans_bytes = 0, is_aligned = 1;
 	u32 mask, flags, mode;
 	unsigned int time = 0, start_addr = 0;
-	int mmc_dev = mmc->block_dev.dev;
+	int mmc_dev = mmc->block_dev.devnum;
 	unsigned start = get_timer(0);
 
 	/* Timeout unit - ms */
diff --git a/fs/fat/fat.c b/fs/fat/fat.c
index 47f077d..f87ddd7 100644
--- a/fs/fat/fat.c
+++ b/fs/fat/fat.c
@@ -100,7 +100,7 @@
 	if (part_get_info(dev_desc, part_no, &info)) {
 		if (part_no != 0) {
 			printf("** Partition %d not valid on device %d **\n",
-					part_no, dev_desc->dev);
+					part_no, dev_desc->devnum);
 			return -1;
 		}
 
@@ -1284,7 +1284,7 @@
 		printf("Unknown");
 	}
 
-	printf("\n  Device %d: ", cur_dev->dev);
+	printf("\n  Device %d: ", cur_dev->devnum);
 	dev_print(cur_dev);
 #endif
 
diff --git a/include/blk.h b/include/blk.h
index fd54520..9c54842 100644
--- a/include/blk.h
+++ b/include/blk.h
@@ -36,7 +36,7 @@
 
 struct blk_desc {
 	enum if_type	if_type;	/* type of the interface */
-	int		dev;		/* device number */
+	int		devnum;		/* device number */
 	unsigned char	part_type;	/* partition type */
 	unsigned char	target;		/* target SCSI ID */
 	unsigned char	lun;		/* target LUN */