Commit 220ddc08 authored Jun 10, 2007 by Milton Miller Committed by Paul Mackerras Jun 14, 2007

[POWERPC] Fix console output getting dropped on platforms without udbg_putc



Previously, registering this early console would just result
in dropping early buffered printk output until a udbg_putc
was registered.

However, commit 69331af7
clears the CON_PRINTBUFFER flag on the main console when a
CON_BOOT (early) console has been registered, resulting in
the buffered messages never being displayed to the user.

This fixes the problem by making sure we don't register udbg_console
on platforms that don't implement udbg_putc.

Signed-off-by: Milton Miller <miltonm@bga.com>
Acked-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

parent c63c4faa

arch/powerpc/kernel/udbg.c

+7 −1

Original line number	Diff line number	Diff line
		@@ -151,12 +151,18 @@ static struct console udbg_console = {

		static int early_console_initialized;

		/* called by setup_system */
		/*
		* Called by setup_system after ppc_md->probe and ppc_md->early_init.
		* Call it again after setting udbg_putc in ppc_md->setup_arch.
		*/
		void register_early_udbg_console(void)
		{
		if (early_console_initialized)
		return;

		if (!udbg_putc)
		return;

		if (strstr(boot_command_line, "udbg-immortal")) {
		printk(KERN_INFO "early console immortal !\n");
		udbg_console.flags &= ~CON_BOOT;