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Date:   Tue, 30 May 2023 15:43:28 +0100
From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     Tony Lindgren <tony@atomide.com>
Cc:     Jiri Slaby <jirislaby@kernel.org>,
        Andy Shevchenko <andriy.shevchenko@intel.com>,
        Dhruva Gole <d-gole@ti.com>,
        Ilpo =?iso-8859-1?Q?J=E4rvinen?= <ilpo.jarvinen@linux.intel.com>,
        John Ogness <john.ogness@linutronix.de>,
        Johan Hovold <johan@kernel.org>,
        Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
        Vignesh Raghavendra <vigneshr@ti.com>,
        linux-omap@vger.kernel.org,
        Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
        linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org
Subject: Re: [PATCH v12 1/1] serial: core: Start managing serial controllers
 to enable runtime PM
Message-ID: <2023053007-disabled-traffic-9812@gregkh>
References: <20230525113034.46880-1-tony@atomide.com>
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On Thu, May 25, 2023 at 02:30:30PM +0300, Tony Lindgren wrote:
> We want to enable runtime PM for serial port device drivers in a generic
> way. To do this, we want to have the serial core layer manage the
> registered physical serial controller devices.
> 
> To manage serial controllers, let's set up a struct bus and struct device
> for the serial core controller as suggested by Greg and Jiri. The serial
> core controller devices are children of the physical serial port device.
> The serial core controller device is needed to support multiple different
> kind of ports connected to single physical serial port device.
> 
> Let's also set up a struct device for the serial core port. The serial
> core port instances are children of the serial core controller device.
> 
> With the serial core port device we can now flush pending TX on the
> runtime PM resume as suggested by Johan.
> 
> Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Suggested-by: Jiri Slaby <jirislaby@kernel.org>
> Suggested-by: Johan Hovold <johan@kernel.org>
> Signed-off-by: Tony Lindgren <tony@atomide.com>
> ---

Thanks for sticking with this, looks good now so I've queued it up in my
tree.

greg k-h