linux-kernel - Re: [PATCH v2 14/14] USB: ch341: implement tx

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Message-ID: <57054F6D.2060501@chown.ath.cx>
Date:	Wed, 6 Apr 2016 20:03:25 +0200
From:	Grigori Goronzy <greg@...wn.ath.cx>
To:	Karl Palsson <karlp@...ak.net.au>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Johan Hovold <johan@...nel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux USB Mailing List <linux-usb@...r.kernel.org>
Subject: Re: [PATCH v2 14/14] USB: ch341: implement tx_empty callback

On 04/03/2016 06:03 PM, Karl Palsson wrote:
> 
> Grigori Goronzy <greg@...wn.ath.cx> wrote:
>> The status bit was found with USB captures of the Windows
>> driver and some luck. Tested on CH340G and CH341A.
> 
> By my reversing, bit 0x4, is "multiple status changes since last
> interrupt"
>

Thanks, I can add the definition.  However, I wonder what this is
actually good for.  We don't actually need this to see that there are
multiple status changes.  We can just look at the different bits.

Grigori



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