linux-kernel - Re: usb: dwc3: gadget: skip pullup and set

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Message-ID: <87ft2qgxle.fsf@kernel.org>
Date:   Sun, 24 Jan 2021 17:31:57 +0200
From:   Felipe Balbi <balbi@...nel.org>
To:     Daehwan Jung <dh10.jung@...sung.com>
Cc:     Daehwan Jung <dh10.jung@...sung.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: usb: dwc3: gadget: skip pullup and set_speed after suspend


Hi,

Daehwan Jung <dh10.jung@...sung.com> writes:
> Sometimes dwc3_gadget_pullup and dwc3_gadget_set_speed are called after
> entering suspend. That's why it needs to check whether suspend
>
> 1. dwc3 sends disconnect uevent and turn off. (suspend)
> 2. Platform side causes pullup or set_speed(e.g., adbd closes ffs node)
> 3. It causes unexpected behavior like ITMON error.

please collect dwc3 trace events showing this problem.

-- 
balbi

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