• Andries E. Brouwer's avatar
    [PATCH] scsi: ten -> use_10_for_rw / use_10_for_ms · e7ac90bc
    Andries E. Brouwer authored
    In the old days, ancient scsi devices understood 6-byte commands
    and more recent ones also understood 10-byte commands.
    Thus, we had a "ten" flag indicating that 10-byte commands worked.
    
    These days, especially for usb-storage devices, the opposite
    sometimes holds - 10-byte commands are supported, but 6-byte commands
    are not.
    
    The patch below changes the field ten into the pair of fields
    use_10_for_rw, use_10_for_ms set initially when the driver
    thinks these are supported. Ifthe device returns ILLEGAL_REQUEST
    they are cleared.
    
    This patch obsoletes a large amount of code in usb-storage,
    and not only that, once the subsequent patch removes all this
    usb-storage code many devices will work that hang today.
    
    
    Andries
    e7ac90bc
sr.c 21.7 KB