linux-kernel - Re: [PATCH v3 2/3] printk: Add match_devname_and_update_preferred

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Date: Tue, 18 Jun 2024 15:16:43 +0200
From: Petr Mladek <pmladek@...e.com>
To: Tony Lindgren <tony.lindgren@...ux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Jiri Slaby <jirislaby@...nel.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	John Ogness <john.ogness@...utronix.de>,
	Sergey Senozhatsky <senozhatsky@...omium.org>,
	Tony Lindgren <tony@...mide.com>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
	linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 2/3] printk: Add
 match_devname_and_update_preferred_console()

On Tue 2024-06-18 07:54:49, Tony Lindgren wrote:
> Let's add match_devname_and_update_preferred_console() for driver
> subsystems to call during init when the console is ready, and it's
> character device name is known. For now, we use it only for the serial
> layer to allow console=DEVNAME:0.0 style hardware based addressing for
> consoles.
> 
> The earlier attempt on doing this caused a regression with the kernel
> command line console order as it added calling __add_preferred_console()
> again later on during init. A better approach was suggested by Petr where
> we add the deferred console to the console_cmdline[] and update it later
> on when the console is ready.
> 
> Suggested-by: Petr Mladek <pmladek@...e.com>
> Co-developed-by: Petr Mladek <pmladek@...e.com>
> Signed-off-by: Tony Lindgren <tony.lindgren@...ux.intel.com>

Looks good and fixes the regression:

Reviewed-by: Petr Mladek <pmladek@...e.com>
Tested-by: Petr Mladek <pmladek@...e.com>

Best Regards,
Petr