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Date:   Fri, 14 Feb 2020 11:06:03 -0800
From:   Tony Lindgren <tony@atomide.com>
To:     Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc:     Russell King - ARM Linux admin <linux@armlinux.org.uk>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Jiri Slaby <jslaby@suse.com>, linux-serial@vger.kernel.org,
        Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Subject: Re: [PATCH v2 5/8] serial: 8250_port: Don't use power management for
 kernel console
Message-ID: <20200214190603.GT16391@atomide.com>
References: <20200214114339.53897-1-andriy.shevchenko@linux.intel.com>
 <20200214114339.53897-6-andriy.shevchenko@linux.intel.com>
 <20200214133918.GP25745@shell.armlinux.org.uk>
 <20200214171348.GP16391@atomide.com>
 <20200214180935.GP10400@smile.fi.intel.com>
 <20200214184251.GR16391@atomide.com>
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* Tony Lindgren <tony@atomide.com> [200214 10:42]:
> OK. So far no luck getting console UART idled after detaching the
> console with:
> 
> # echo N > /sys/class/tty/ttyS2/console
> 
> Any ideas what might be missing still?

Looks like echo Y keeps increasing the usage count while
echo N will never decrease it currently. Is port->dev
maybe already NULL in serial8250_console_exit() or something?

This is still without the series you listed as a dependency
though. I need to test with that later on today when I get
a chance.

Regards,

Tony