Commit 0c5564bd authored Aug 20, 2007 by Robin Getz Committed by Linus Torvalds Aug 20, 2007

ensure we don't use bootconsoles after init has been released

This is a followup to the cleanups for earlyprintk patch from Gerd Hoffmann

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=69331af79cf29e26d1231152a172a1a10c2df511



This ensures that a bootconsole is unregistered if it is not replaced.
The current implementation spews garbage out the bootconsole in this case,
since the bootconsole structure is normally in the init section, and is
freed, but still used.

Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Cc: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 35b426c3

kernel/printk.c

+11 −0

Original line number	Diff line number	Diff line
		@@ -1083,6 +1083,17 @@ int unregister_console(struct console *console)
		}
		EXPORT_SYMBOL(unregister_console);

		static int __init disable_boot_consoles(void)
		{
		if (console_drivers->flags & CON_BOOT) {
		printk(KERN_INFO "turn off boot console %s%d\n",
		console_drivers->name, console_drivers->index);
		return unregister_console(console_drivers);
		}
		return 0;
		}
		late_initcall(disable_boot_consoles);

		/**
		* tty_write_message - write a message to a certain tty, not just the console.
		* @tty: the destination tty_struct

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