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ReadPipeT0 always wrong!

Subject: ReadPipeT0 always wrong!
From: Wang Yongqing <email@hidden>
Date: Fri, 16 Mar 2007 01:13:39 -0700 (PDT)
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Hi, I'm developing the USB dirver for my SmartCard Reader for Mac OS 10.4.

When I starts pcsclite service first time, the driver can work well.

But when I stop the service pcsc(use ctrl+c) and restart pcsclite,

I have the wrong messeges about the ReadPipeT0.

my ReadUSB function:

UInt32 ReadUSB(reader * globalData, unsigned char *buffer, UInt32 ReadTimeOut)
{
    IOReturn iorv;
    UInt32  recvLen;
    UInt32      noDataTO, completeTO;

/* Make sure the pipe is OK */

iorv = (*globalData->io.iface)->GetPipeStatus( globalData->io.iface,
                                                       globalData->io.inPipeRef );
    if ( iorv != kIOReturnSuccess )
    {
        return -1;
    }

    recvLen = globalData->ReadEpMaxPacketSize;
    completeTO = ReadTimeOut; //ReadTimeOut
    noDataTO   = ReadTimeOut; //ReadTimeOut
    iorv = (*globalData->io.iface)->ReadPipeTO( globalData->io.iface,
                                                    globalData->io.inPipeRef,
                                                    buffer, &recvLen, noDataTO, completeTO);

    if ( iorv != 0 )
{
        iorv = (*globalData->io.iface)->ClearPipeStall( globalData->io.iface,
                                                    globalData->io.inPipeRef);

  AgmLog2(AGM_LOG_INFO," iorv = %x\n", iorv);
        return -1;
    }

return recvLen;
}

Do my ReadUSB function have some problem? any advice, Thank you!!

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