Patch "Revert "tty: serial: 8250: add CON_CONSDEV to flags"" has been added to the 4.9-stable tree

This is a note to let you know that I've just added the patch titled

Revert "tty: serial: 8250: add CON_CONSDEV to flags"

to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
revert-tty-serial-8250-add-con_consdev-to-flags.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Herbert Xu <[email protected]>
Date: Sun, 11 Dec 2016 10:05:49 +0800
Subject: Revert "tty: serial: 8250: add CON_CONSDEV to flags"

From: Herbert Xu <[email protected]>

commit 6741f551a0b26479de2532ffa43a366747e6dbf3 upstream.

This commit needs to be reverted because it prevents people from using the serial console as a secondary console with input being directed to tty0.

IOW, if you boot with console=ttyS0 console=tty0 then all kernels prior to this commit will produce output on both ttyS0 and tty0 but input will only be taken from tty0. With this patch the serial console will always be the primary console instead of tty0, potentially preventing people from getting into their machines in emergency situations.

---
 drivers/tty/serial/8250/8250_core.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

@@ -675,7 +675,7 @@ static struct console univ8250_console =
 	.device		= uart_console_device,
 	.setup		= univ8250_console_setup,
 	.match		= univ8250_console_match,
-	.flags		= CON_PRINTBUFFER | CON_ANYTIME | CON_CONSDEV,
+	.flags		= CON_PRINTBUFFER | CON_ANYTIME,
 	.index		= -1,
 	.data		= &serial8250_reg,
 };

Patches currently in stable-queue which might be from [email protected] are

queue-4.9/revert-tty-serial-8250-add-con_consdev-to-flags.patch