# USB support in Linux **URL:** \ **Category:** MicroMod\ **Tags:** arm-lpc\ **Created:** [July 20, 2008, 1:15pm UTC](https://community.sparkfun.com/t/usb-support-in-linux/7948 "2008-07-20T13:15:13Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![limp](https://avatars.discourse-cdn.com/v4/letter/l/f6c823/32.png) [@limp](https://community.sparkfun.com/u/limp)\ **Post date:** [July 20, 2008, 1:15pm UTC](https://community.sparkfun.com/t/usb-support-in-linux/7948/1 "2008-07-20T13:15:13Z")
Hi to all, I am using a CS-9302 board and I want to use a USB stick whith it. (specifically a SunDisk Cruzer 512 Mb). However, it seems that my kernel (2.6.20.4) doesn’t have USB support because when I am trying to mount it I get the following message: ```auto mount: Mounting /dev/sda1 on mnt failed: No such device or address ``` from the kernel boot process I noticed the following messages which are regarding to USB drivers: ```auto ep93xx-usb ep93xx-usb: EP93xx OHCI ep93xx-usb ep93xx-usb: new USB bus registered, assigned bus number 1 ep93xx-usb ep93xx-usb: irq 56, io mem 0x80020000 usb usb1: configuration #1 chosen from 1 choice hub 1-0:1.0: USB hub found hub 1-0:1.0: 3 ports detected usbcore: registered new interface driver hiddev usbcore: registered new interface driver usbhid drivers/usb/input/hid-core.c: v2.6:USB HID core driver drivers/usb/net/rtl8150.c: rtl8150 based usb-ethernet driver v0.6.2 (2004/08/27) usbcore: registered new interface driver rtl8150 usbcore: registered new interface driver usbserial drivers/usb/serial/usb-serial.c: USB Serial Driver core drivers/usb/serial/usb-serial.c: USB Serial support registered for pl2303 usbcore: registered new interface driver pl2303 drivers/usb/serial/pl2303.c: Prolific PL2303 USB to serial adaptor driver ``` What should I do to have USB support? Could I do some changes into kernel configuration settings to fix that? Thank you in advance for your time. ---
**Author:** ![denial](https://avatars.discourse-cdn.com/v4/letter/d/ce73a5/32.png) [@denial](https://community.sparkfun.com/u/denial)\ **Post date:** [July 20, 2008, 8:58pm UTC](https://community.sparkfun.com/t/usb-support-in-linux/7948/2 "2008-07-20T20:58:51Z")
Did you load the modules usb-storage and sd\_mod? ---
**Author:** ![limp](https://avatars.discourse-cdn.com/v4/letter/l/f6c823/32.png) [@limp](https://community.sparkfun.com/u/limp)\ **Post date:** [July 21, 2008, 7:40am UTC](https://community.sparkfun.com/t/usb-support-in-linux/7948/3 "2008-07-21T07:40:25Z")
First of all thank you for your reply! In menuconfig I am choosing all “USB Mass Storage support” devices to be built-in the kernel so I assumed that there will be no need to load any module regarding usb suppport. Could you please help me out a little bit on how to load these modules on the kernel? Where are located anyway in the source? In BusyBox I don’t have support of the insmod command in order to load the module. Could I follow a different procedure in order to load them? Again, thanks a lot! ---
**Author:** ![denial](https://avatars.discourse-cdn.com/v4/letter/d/ce73a5/32.png) [@denial](https://community.sparkfun.com/u/denial)\ **Post date:** [July 21, 2008, 8:26am UTC](https://community.sparkfun.com/t/usb-support-in-linux/7948/4 "2008-07-21T08:26:50Z")
You also need the SCSI subsystem including the SCSI disk driver (sd\_mod). Did you include those as well? What does dmesg say after you’ve plugged in that stick? ---
**Author:** ![limp](https://avatars.discourse-cdn.com/v4/letter/l/f6c823/32.png) [@limp](https://community.sparkfun.com/u/limp)\ **Post date:** [July 21, 2008, 9:59am UTC](https://community.sparkfun.com/t/usb-support-in-linux/7948/5 "2008-07-21T09:59:13Z")
> You also need the SCSI subsystem including the SCSI disk driver (sd\_mod). > > Did you include those as well? I am choosing “SCSI device support”, “SCSI targert support” and “SCSI generic support” to be built-in the kernel from menuconfig. I can’t find anyware in the source where the modules “sd\_mod” and “usb-storage” that you mentioned are. How can I built this modules in the kernel Image file that I am creating and finally load on the board? > What does dmesg say after you’ve plugged in that stick? I am getting the following message: ```auto ~ # usb 1-3: new full speed USB device using ep93xx-usb and address 2 usb 1-3: not running at top speed; connect to a high speed hub usb 1-3: Product: U3 Cruzer Micro usb 1-3: Manufacturer: SanDisk Corporation usb 1-3: SerialNumber: 0000051019072283 usb 1-3: configuration #1 chosen from 1 choice scsi0 : SCSI emulation for USB Mass Storage devices ~ # scsi 0:0:0:0: Direct-Access SanDisk U3 Cruzer Micro 2.15 PQ: 0 ANSI: 2 ``` Thank you! ---
**Author:** ![denial](https://avatars.discourse-cdn.com/v4/letter/d/ce73a5/32.png) [@denial](https://community.sparkfun.com/u/denial)\ **Post date:** [July 21, 2008, 11:49am UTC](https://community.sparkfun.com/t/usb-support-in-linux/7948/6 "2008-07-21T11:49:06Z")
> limp: > I am choosing “SCSI device support”, “SCSI targert support” and “SCSI generic support” to be built-in the kernel from menuconfig. You don’t need “SCSI target support” and “SCSI generic support” for this to work. You need “SCSI disk support” > I can’t find anyware in the source where the modules “sd\_mod” and “usb-storage” that you mentioned are. sd\_mod is “SCSI disk support” usb-storage is “USB Mass Storage support” ---
**Author:** ![limp](https://avatars.discourse-cdn.com/v4/letter/l/f6c823/32.png) [@limp](https://community.sparkfun.com/u/limp)\ **Post date:** [July 21, 2008, 12:03pm UTC](https://community.sparkfun.com/t/usb-support-in-linux/7948/7 "2008-07-21T12:03:04Z")
I will try to re-build the kernel with “SCSI disk support” and “USB Mass Storage support” selected to be built-in and I will let you know for the results. I really apreciate your help! ---
**Author:** ![limp](https://avatars.discourse-cdn.com/v4/letter/l/f6c823/32.png) [@limp](https://community.sparkfun.com/u/limp)\ **Post date:** [July 21, 2008, 12:48pm UTC](https://community.sparkfun.com/t/usb-support-in-linux/7948/8 "2008-07-21T12:48:57Z")
I have dove the changes in menuconfig and I re-built the kernel. The compilation has been compilted successfully, however, I can’t find the kernel Images. Here are the messages from the end of the build procedure indicating that arch/arm/boot/zImage file has been created successfully: ```auto OBJCOPY arch/arm/boot/Image Kernel: arch/arm/boot/Image is ready GZIP arch/arm/boot/compressed/piggy.gz AS arch/arm/boot/compressed/piggy.o LD arch/arm/boot/compressed/vmlinux OBJCOPY arch/arm/boot/zImage Kernel: arch/arm/boot/zImage is ready Building modules, stage 2. MODPOST 15 modules ``` Also, Linux can see the zImage file with “ls” command: ```auto limp@limp-laptop:~/limp_project/My_Kernel/linux-2.6.20.4$ ls -l arch/arm/boot/zImage -rwxr-xr-x 1 limp limp 1794320 2008-07-21 13:32 arch/arm/boot/zImage ``` BUT, when I am going to linux-2.6.20.4/arch/arm/boot/ folder, zImage is not there!!! ---
**Author:** ![limp](https://avatars.discourse-cdn.com/v4/letter/l/f6c823/32.png) [@limp](https://community.sparkfun.com/u/limp)\ **Post date:** [July 22, 2008, 10:57am UTC](https://community.sparkfun.com/t/usb-support-in-linux/7948/9 "2008-07-22T10:57:47Z")
> BUT, when I am going to linux-2.6.20.4/arch/arm/boot/ folder, zImage is not there!!! OK, I got finally the zImage file after lots of tries (I don’t know why I had the above problem) and I load it to the board. Now, when I am plugin in my USB I am getting the below message: ```auto ~ # usb 1-3: new full speed USB device using ep93xx-usb and address 2 usb 1-3: not running at top speed; connect to a high speed hub usb 1-3: configuration #1 chosen from 1 choice scsi0 : SCSI emulation for USB Mass Storage devices scsi 0:0:0:0: Direct-Access SanDisk U3 Cruzer Micro 2.15 PQ: 0 ANSI: 2 SCSI device sda: 990865 512-byte hdwr sectors (507 MB) sda: Write Protect is off sda: assuming drive cache: write through SCSI device sda: 990865 512-byte hdwr sectors (507 MB) sda: Write Protect is off sda: assuming drive cache: write through sda:<7>usb-storage: queuecommand called sda1 sd 0:0:0:0: Attached scsi removable disk sda ``` and my dmesg is the following: ```auto R 188 Stat 0x0 usb-storage: scsi cmd done, result=0x0 usb-storage: *** thread sleeping. sda: Write Protect is off sda: Mode Sense: 03 00 00 00 sda: assuming drive cache: write through usb-storage: queuecommand called usb-storage: *** thread awakened. usb-storage: Command TEST_UNIT_READY (6 bytes) usb-storage: 00 00 00 00 00 00 usb-storage: Bulk Command S 0x43425355 T 0x5 L 0 F 0 Trg 0 LUN 0 CL 6 usb-storage: usb_stor_bulk_transfer_buf: xfer 31 bytes usb-storage: Status code 0; transferred 31/31 usb-storage: -- transfer complete usb-storage: Bulk command transfer result=0 usb-storage: Attempting to get CSW... usb-storage: usb_stor_bulk_transfer_buf: xfer 13 bytes usb-storage: Status code 0; tr usb-storage: -- transfer complete usb-storage: Bulk status result = 0 usb-storage: Bulk Status S 0x53425355 T 0x5 R 0 Stat 0x0 usb-storage: scsi cmd done, result=0x0 usb-storage: *** thread sleeping. usb-storage: queuecommand called usb-storage: *** thread awakened. usb-storage: Command ALLOW_MEDIUM_REMOVAL (6 bytes) usb-storage: 1e 00 00 00 01 00 usb-storage: Bulk Command S 0x43425355 T 0x6 L 0 F 0 Trg 0 LUN 0 CL 6 usb-storage: usb_stor_bulk_transfer_buf: xfer 31 bytes usb-storage: Status code 0; transferred 31 usb-storage: -- transfer complete usb-storage: Bulk command transfer result=0 usb-storage: Attempting to get CSW... usb-storage: usb_stor_bulk_transfer_buf: xfer 13 bytes usb-storage: Status code 0; transferred 13/13 usb-storage: -- transfer complete usb-storage: Bulk status result = 0 usb-storage: Bulk Status S 0x53425355 T 0x6 R 0 Stat 0x1 usb-storage: -- transport indicates command failure usb-storage: Issuing auto-REQUEST_SENSE usb-storage: Bulk Command S 0x43425355 T 0x7 L 18 F 128 Trg 0 LUN 0 CL 6 usb-storage: usb_stor_bulk_transfer_buf: xfer 31 bytes usb-storage: Status code 0; transferred 31/31 usb-storage: -- transfer complete usb-storage: Bulk command transfer result=0 usb-storage: usb_stor_bulk_transfer_buf: xfer 18 bytes usb-storage: Status code 0; transferred 18/18 usb-storage: -- transfer complete usb-storage: Bulk data transfer result 0x0 usb-storage: Attempting to get CSW... usb-storage: usb_stor_bulk_transfer_buf: xfer 13 bytes usb-storage: Status code 0; transferred 13/13 usb-storage: -- transf usb-storage: Bulk status result = 0 usb-storage: Bulk Status S 0x53425355 T 0x7 R 0 Stat 0x0 usb-storage: -- Result from auto-sense is 0 usb-storage: -- code: 0x70, key: 0x5, ASC: 0x24, ASCQ: 0x0 usb-storage: (Unknown Key): (unknown ASC/ASCQ) usb-storage: scsi cmd done, result=0x2 usb-storage: *** thread sleeping. usb-storage: queuecommand called usb-storage: *** thread awakened. usb-storage: Command TEST_UNIT_READY (6 bytes) usb-storage: 00 00 00 00 00 00 usb-storage: Bulk Command S 0x43425355 T 0x8 L 0 F 0 Trg usb-storage: usb_stor_bulk_transfer_buf: xfer 31 bytes usb-storage: Status code 0; transferred 31/31 usb-storage: -- transfer complete usb-storage: Bulk command transfer result=0 usb-storage: Attempting to get CSW... usb-storage: usb_stor_bulk_transfer_buf: xfer 13 bytes usb-storage: Status code 0; transferred 13/13 usb-storage: -- transfer complete usb-storage: Bulk status result = 0 usb-storage: Bulk Status S 0x53425355 T 0x8 R 0 Stat 0x0 usb-storage: scsi cmd done, result=0x0 usb-storage: *** thread sleeping. usb-storage: queuecommand called usb-storage: *** thread awakened. usb-storage: Command READ_CAPACITY (10 bytes) usb-storage: 25 00 00 00 00 00 00 00 00 00 usb-storage: Bulk Command S 0x43425355 T 0x9 L 8 F 128 Trg 0 LUN 0 CL 10 usb-storage: usb_stor_bulk_transfer_buf: xfer 31 bytes usb-storage: Status code 0; transferred 31/31 usb-storage: -- transfer complete usb-storage: Bulk command transfer result=0 usb-storage: usb_stor_bulk_transfer_sglist: xfer 8 bytes, 1 entries usb-storage: Status code 0; transferred usb-storage: -- transfer complete usb-storage: Bulk data transfer result 0x0 usb-storage: Attempting to get CSW... usb-storage: usb_stor_bulk_transfer_buf: xfer 13 bytes usb-storage: Status code 0; transferred 13/13 usb-storage: -- transfer complete usb-storage: Bulk status result = 0 usb-storage: Bulk Status S 0x53425355 T 0x9 R 0 Stat 0x0 usb-storage: scsi cmd done, result=0x0 usb-storage: *** thread sleeping. SCSI device sda: 990865 512-byte hdwr sectors (507 MB) usb-storage: queuecommand called usb-storage: *** thread awakened. usb-storage: Command MODE_SENSE (6 bytes) usb-storage: 1a 00 3f 00 c0 00 usb-storage: Bulk Command S 0x43425355 T 0xa L 192 F 128 Trg 0 LUN 0 CL 6 usb-storage: usb_stor_bulk_transfer_buf: xfer 31 bytes usb-storage: Status code 0; transferred 31/31 usb-storage: -- transfer complete usb-storage: Bulk command transfer result=0 usb-storage: usb_stor_bulk_transfer_sglist: xfer 192 bytes, 1 entries usb-storage: Status code -121; transferred 4/192 usb-storage: -- short read transfer usb-storage: Bulk data transfer result 0x1 usb-storage: Attempting to get CSW... usb-storage: usb_stor_bulk_transfer_buf: xfer 13 bytes usb-storage: Status code 0; transferred 13/13 usb-storage: -- transfer complete usb-storage: Bulk status result = 0 usb-storage: Bulk Status S 0x53425355 T 0xa R 188 Stat 0x0 usb-storage: scsi cmd done, result=0x0 usb-storage: *** thread sleeping. sda: Write Protect is off sda: Mode Sense: 03 00 00 00 sda: assuming drive cache: write through sda:<7>usb-storage: queuecommand call usb-storage: *** thread awakened. usb-storage: Command READ_10 (10 bytes) usb-storage: 28 00 00 00 00 00 00 00 08 00 usb-storage: Bulk Command S 0x43425355 T 0xb L 4096 F 128 Trg 0 LUN 0 CL 10 usb-storage: usb_stor_bulk_transfer_buf: xfer 31 bytes usb-storage: Status code 0; transferred 31/31 usb-storage: -- transfer complete usb-storage: Bulk command transfer result=0 usb-storage: usb_stor_bulk_transfer_sglist: xfer 4096 bytes, 1 entries usb-storage: Status code 0; transferred 4096/4096 usb-storage: -- transfe usb-storage: Bulk data transfer result 0x0 usb-storage: Attempting to get CSW... usb-storage: usb_stor_bulk_transfer_buf: xfer 13 bytes usb-storage: Status code 0; transferred 13/13 usb-storage: -- transfer complete usb-storage: Bulk status result = 0 usb-storage: Bulk Status S 0x53425355 T 0xb R 0 Stat 0x0 usb-storage: scsi cmd done, result=0x0 usb-storage: *** thread sleeping. sda1 sd 0:0:0:0: Attached scsi removable disk sda usb-storage: queuecommand called usb-storage: *** thread awakened. usb-storage: Bad ta usb-storage: scsi cmd done, result=0x40000 usb-storage: *** thread sleeping. usb-storage: queuecommand called usb-storage: *** thread awakened. usb-storage: Bad target number (2:0) usb-storage: scsi cmd done, result=0x40000 usb-storage: *** thread sleeping. usb-storage: queuecommand called usb-storage: *** thread awakened. usb-storage: Bad target number (3:0) usb-storage: scsi cmd done, result=0x40000 usb-storage: *** thread sleeping. usb-storage: queuecommand called usb-storage: *** thread awakened. usb-storage: Bad target number (4:0) usb-storage: scsi cmd done, result=0x40000 usb-storage: *** thread sleeping. usb-storage: queuecommand called usb-storage: *** thread awakened. usb-storage: Bad target number (5:0) usb-storage: scsi cmd done, result=0x40000 usb-storage: *** thread sleeping. usb-storage: queuecommand called usb-storage: *** thread awakened. usb-storage: Bad target number (6:0) usb-storage: scsi cmd done, result=0x40000 usb-storage: *** thread sleeping. usb-storage: queuecommand called usb-storage: *** thread awakened. usb-storage: Bad target number (7:0) usb-storage: scsi cmd done, result=0x40000 usb-storage: *** thread sleeping. usb-storage: device scan complete ``` When I am trying to mount it I get the following message: ```auto ~ # mount /dev/sda1 mnt UDF-fs: No partition found (1) mount: Mounting /dev/sda1 on mnt failed: Invalid argument ``` I have also tried with sda instead of sda1 without success. Any help? ---
**Author:** ![lou](https://avatars.discourse-cdn.com/v4/letter/l/ea666f/32.png) [@lou](https://community.sparkfun.com/u/lou)\ **Post date:** [July 22, 2008, 2:39pm UTC](https://community.sparkfun.com/t/usb-support-in-linux/7948/10 "2008-07-22T14:39:56Z")
> limp: > When I am trying to mount it I get the following message: > > ```auto > ~ # mount /dev/sda1 mnt > > ``` UDF-fs: No partition found (1) mount: Mounting /dev/sda1 on mnt failed: Invalid argument > ```auto > > ``` Has the drive been partitioned? Is “mnt” a directory under the directory that you’re invoking mount from? > limp: > I have also tried with sda instead of sda1 without success. > > Any help? Has the unpartitioned drive been formatted with a filesystem which the kernel you’ve built supports? ---
**Author:** ![denial](https://avatars.discourse-cdn.com/v4/letter/d/ce73a5/32.png) [@denial](https://community.sparkfun.com/u/denial)\ **Post date:** [July 22, 2008, 2:53pm UTC](https://community.sparkfun.com/t/usb-support-in-linux/7948/11 "2008-07-22T14:53:00Z")
> limp: > > ```auto > R 188 Stat 0x0 > > ``` usb-storage: scsi cmd done, result=0x0 usb-storage: \*\*\* thread sleeping. sda: Write Protect is off sda: Mode Sense: 03 00 00 00 sda: assuming drive cache: write through usb-storage: queuecommand called usb-storage: \*\*\* thread awakened. usb-storage: Command TEST\_UNIT\_READY (6 bytes) usb-storage: 00 00 00 00 00 00 usb-storage: Bulk Command S 0x43425355 T 0x5 L 0 F 0 Trg 0 LUN 0 CL 6 > ```auto > > ``` Wow, you’ve compiled in A LOT of debug messages… > When I am trying to mount it I get the following message: > > ```auto > UDF-fs: No partition found (1) > > ``` For some reason it is trying to use the UDF file system. Try to mount with -t vfat or -t ntfs or whatever you use on that stick. > I have also tried with sda instead of sda1 without success. /dev/sda1 is correct. The message that says which partitions are available is in that big dmesg output. ---
**Author:** ![limp](https://avatars.discourse-cdn.com/v4/letter/l/f6c823/32.png) [@limp](https://community.sparkfun.com/u/limp)\ **Post date:** [July 22, 2008, 9:11pm UTC](https://community.sparkfun.com/t/usb-support-in-linux/7948/12 "2008-07-22T21:11:47Z")
Problem solved! > lou: > Has the unpartitioned drive been formatted with a filesystem which the kernel you’ve built supports? My USB stick has FAT filesystem but my kernel didn’t have support for FAT filesystems. When I added this, everything worked fine and now I am able to mount and use my USB stick! I want to thank you all for your help. It was really appreciated!