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
Date: Fri, 14 Feb 2020 11:06:03 -0800 [thread overview]
Message-ID: <20200214190603.GT16391@atomide.com> (raw)
In-Reply-To: <20200214184251.GR16391@atomide.com>
* 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
next prev parent reply other threads:[~2020-02-14 19:06 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-14 11:43 [PATCH v2 0/8] serial: Disable DMA and PM on kernel console Andy Shevchenko
2020-02-14 11:43 ` [PATCH v2 1/8] serial: core: Introduce uart_console_enabled() helper Andy Shevchenko
2020-02-14 11:43 ` [PATCH v2 2/8] serial: core: Consolidate spin lock initialization code Andy Shevchenko
2020-02-14 11:43 ` [PATCH v2 3/8] serial: core: use octal permissions on module param Andy Shevchenko
2020-02-14 16:27 ` Greg Kroah-Hartman
2020-02-17 9:15 ` Andy Shevchenko
2020-02-14 11:43 ` [PATCH v2 4/8] serial: core: Allow detach and attach serial device for console Andy Shevchenko
2020-02-14 16:28 ` Greg Kroah-Hartman
2020-02-17 10:23 ` Andy Shevchenko
2020-02-14 11:43 ` [PATCH v2 5/8] serial: 8250_port: Don't use power management for kernel console Andy Shevchenko
2020-02-14 13:39 ` Russell King - ARM Linux admin
2020-02-14 17:13 ` Tony Lindgren
2020-02-14 18:09 ` Andy Shevchenko
2020-02-14 18:42 ` Tony Lindgren
2020-02-14 19:06 ` Tony Lindgren [this message]
2020-02-14 18:14 ` Tony Lindgren
2020-02-14 18:56 ` Andy Shevchenko
2020-02-14 19:02 ` Tony Lindgren
2020-02-14 11:43 ` [PATCH v2 6/8] serial: 8250_port: Disable DMA operations " Andy Shevchenko
2020-02-14 16:30 ` Greg Kroah-Hartman
2020-02-17 9:18 ` Andy Shevchenko
2020-02-14 11:43 ` [PATCH v2 7/8] serial: 8250_mtk: Remove duplicating code to disable DMA Andy Shevchenko
2020-02-14 11:43 ` [PATCH v2 8/8] serial: 8250_omap: " Andy Shevchenko
2020-02-14 16:33 ` [PATCH v2 0/8] serial: Disable DMA and PM on kernel console Greg Kroah-Hartman
2020-02-14 21:41 ` Tony Lindgren
2020-02-17 10:05 ` Andy Shevchenko
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