Hi,
>> Thanks, i added in UDC driver to call bulk_in_complete for every
>> request over a bulk in ep, now the gadget driver is able to process
>> the SCSI Inquiry command. When it comes to SCSI Read Format Capacities
>> command, the gadget driver gives attention condition error in
>> check_command() in the code snippet below, and the command is not
>> processed by do_read_format_capacities().
>>
>> if (curlun && curlun->unit_attention_data != SS_NO_SENSE &&
>> fsg->cmnd[0] != INQUIRY &&
>> fsg->cmnd[0] != REQUEST_SENSE) {
>> curlun->sense_data = curlun->unit_attention_data;
>> curlun->unit_attention_data = SS_NO_SENSE;
>> return -EINVAL;
>> }
>>
>> Besides the code snippet, the only place that sets unit_attention data
>> to SS_NO_SENSE is in handle_exception(). How is UDC driver able to
>> overcome this problem?
>
> What problem? This all sounds perfectly normal.
>
> Maybe you should post the kernel debugging log.
>
The problem is READ FORMAT CAPACITIES command is not processed, and no
reply is sent back in response to the command.
the kernel log does not show any error that is related to SCSI commands.
thanks,
victor
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