linux-kernel - Re: [PATCH v2] USB: serial: cp210x: Fix GPIO in autosuspend

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Message-ID: <20190220092304.GG4072@localhost>
Date:   Wed, 20 Feb 2019 10:23:04 +0100
From:   Johan Hovold <johan@...nel.org>
To:     Karoly Pados <pados@...os.hu>
Cc:     Johan Hovold <johan@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        Loic Poulain <loic.poulain@...aro.org>
Subject: Re: [PATCH v2] USB: serial: cp210x: Fix GPIO in autosuspend

On Sun, Feb 17, 2019 at 06:59:01PM +0100, Karoly Pados wrote:
> Current GPIO code in cp210x fails to take USB autosuspend into account,
> making it practically impossible to use GPIOs with autosuspend enabled
> without user configuration. Fix this like for ftdi_sio in a previous patch.
> Tested on a CP2102N.
> 
> Signed-off-by: Karoly Pados <pados@...os.hu>
> ---
> Changelog:
> - v2: Restrict new autopm calls to GPIO paths.
>       Always check result of usb_autopm_get.
>       Rebased to current usb_serial upstream.

Thanks for the v2. Now applied after removing the unmotivated white
space change.

I also added a Fixes and CC-stable tag as this seems annoying enough to
warrant a backport even if autosuspend was never actually supported.

Johan