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From: Tony Lindgren <tony@atomide.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
	Jiri Slaby <jslaby@suse.com>,
	linux-serial@vger.kernel.org,
	Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Subject: Re: [PATCH v2 0/8] serial: Disable DMA and PM on kernel console
Date: Fri, 14 Feb 2020 13:41:28 -0800	[thread overview]
Message-ID: <20200214214128.GW16391@atomide.com> (raw)
In-Reply-To: <20200214163325.GA3992427@kroah.com>

* Greg Kroah-Hartman <gregkh@linuxfoundation.org> [200214 20:03]:
> On Fri, Feb 14, 2020 at 01:43:31PM +0200, Andy Shevchenko wrote:
> > This is second attempt [1] to get rid of problematic DMA and PM calls
> > in the serial kernel console code.
> > 
> > Kernel console is sensitive to any kind of complex work needed to print
> > out anything on it. One such case is emergency print during Oops.
> > 
> > Patches 1-3 are preparatory ones.
> 
> I've applied these first 3, as they are "obvious" :)
> 
> I'll let others weigh in on the other patches here, as I'd like to see
> if Tony and others feel it solves their issues or not.

Yes with the pm_runtime_get_sync/pm_runtime_put_sync change for
patch 5/8 things work nicely for me. But as it looks like there will
be another revision of the patches so I'll wait for that before
acking.

Regards,

Tony

  reply	other threads:[~2020-02-14 21:41 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
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 [this message]
2020-02-17 10:05     ` Andy Shevchenko

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