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Date:      Wed, 20 Apr 2022 20:37:09 +0200
From:      Hans Petter Selasky <hps@selasky.org>
To:        Farhan Khan <farhan@farhan.codes>, freebsd-usb@freebsd.org
Subject:   Re: Trouble loading firmware to USB device
Message-ID:  <d2253b56-3174-ae31-078c-ba43bb3c7fc2@selasky.org>
In-Reply-To: <007551144c601a21e2ec8133a8359323de29725f.camel@farhan.codes>
References:  <f47b9415c262267d5c2505463b54f58ceaf76315.camel@farhan.codes> <d27787a2-eb6b-25dc-2d0d-56af4184032b@selasky.org> <9315bf6d-b9a9-89a2-9a32-aca9fd9cc015@farhan.codes> <dfc1cd8a-75a9-6637-e721-83d134910185@selasky.org> <007551144c601a21e2ec8133a8359323de29725f.camel@farhan.codes>

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On 4/20/22 18:34, Farhan Khan wrote:
> On Tue, 2022-04-19 at 09:01 +0200, Hans Petter Selasky wrote:
>> On 4/19/22 05:51, Farhan Khan wrote:
>>> Thank you! I made the changes, but the problem remains, namely the
>>> athn_usb_intr INTR RX callback is never called.
>>
>> Did you start/reststart this USB transfer?
>>
>> --HPS
> 
> No. How and where would that be done, if the primary thread you are on
> is sleeping via msleep()? Do you have an example of this? I was looking
> at the code of otus(4)?
> 
> On a side note, it seems that my initial usbd_transfer_start() to
> wakeup the Rx Intr pipe seems to run the USB_ST_SETUP, which completes
> successfully, but there is no associated USB_ST_TRANSFERRED. Not sure
> if this is relevant?
> 

Hi,

It appears you've programmed the interrupt endpoint to only receive one 
USB packet, because there is no /* FALLTHROUGH */, but a "break;" 
statement instead!

> 		break;
> 	case USB_ST_SETUP:

Maybe if you change that, it will work.

--HPS



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