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Old 08-02-2011, 05:45 AM   #1
Padmasri
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USB Read/write issue in omap3730


I'm facing an USB read/write issue on omap3730
Kernel version: linux-2.6.32
Processor- omap3730
Transceiver used - USB3320

After booting of the board, led on USB3320 PHY is glowing,once I insert USB device and transfer data to USB device I face below issue and the port goes to off mode(led on phy also stops glowing)
Can anyone please help me in this issue.
Thanks in advance.

hub 1-0:1.0: port 1 disabled by hub (EMI?), re-enabling...
IN start_unlink_async
usb 1-1: USB disconnect, address 2
usb 1-1.2: USB disconnect, address 3
IN start_unlink_async
sd 0:0:0:0: [sda] Unhandled error code
sd 0:0:0:0: [sda] Result: hostbyte=0x01 driverbyte=0x00
sd 0:0:0:0: [sda] CDB: cdb[0]=0x28: 28 00 00 0b 02 6e 00 00 40 00
end_request: I/O error, dev sda, sector 721518
sd 0:0:0:0: [sda] Unhandled error code
sd 0:0:0:0: [sda] Result: hostbyte=0x01 driverbyte=0x00
sd 0:0:0:0: [sda] CDB: cdb[0]=0x28: 28 00 00 0b 02 ae 00 00 40 00
end_request: I/O error, dev sda, sector 721582
IN start_unlink_async
cat: read error: Input/output error
FAT: unable to read inode block for updating (i_pos 8019)
FAT: unable to read inode block for updating (i_pos 8019)

Last edited by Padmasri; 08-02-2011 at 05:47 AM.
 
Old 08-02-2011, 10:47 AM   #2
business_kid
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Seems like you're drawing too much current from the port. So the port switches off, and disk access never likes to have the device it's talking to vanish - hence the string of nonsense.
 
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Old 08-02-2011, 11:13 PM   #3
Padmasri
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Smile

Quote:
Originally Posted by business_kid View Post
Seems like you're drawing too much current from the port. So the port switches off, and disk access never likes to have the device it's talking to vanish - hence the string of nonsense.
Thank you so much for your reply.
Thank you..
 
  


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