linux-kernel - Re: [PATCH] usb: typec: tcpm: Fix if vbus before cc, hard_reset

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Message-ID: <88586992-650f-a4a1-2fa0-8cef313380fb@roeck-us.net>
Date:   Mon, 5 Oct 2020 08:30:23 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Greg KH <gregkh@...uxfoundation.org>
Cc:     ChiYuan Huang <u0084500@...il.com>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        cy_huang <cy_huang@...htek.com>
Subject: Re: [PATCH] usb: typec: tcpm: Fix if vbus before cc, hard_reset_count
 not reset issue

On 10/5/20 4:08 AM, Greg KH wrote:
[ ... ]
>>> What ever happened with this patch, is there still disagreement?
>>>
>>
>> Yes, there is. I wouldn't have added the conditional without reason,
>> and I am concerned that removing it entirely will open another problem.
>> Feel free to apply, though - I can't prove that my concern is valid,
>> and after all we'll get reports from the field later if it is.
> 
> Ok, can I get an ack so I know who to come back to in the future if
> there are issues?  :)
> 

Not from me, for the reasons I stated. I would be ok with something like:

-	if (tcpm_port_is_disconnected(port))
+	if (tcpm_port_is_disconnected(port) ||
+           (tcpm_cc_is_open(port->cc1) && tcpm_cc_is_open(port->cc2)))

to narrow down the condition.

Guenter