forked from luck/tmp_suning_uos_patched
69331af79c
The console subsystem already has an idea of a boot console, using the CON_BOOT flag. The implementation has some flaws though. The major problem is that presence of a boot console makes register_console() ignore any other console devices (unless explicitly specified on the kernel command line). This patch fixes the console selection code to *not* consider a boot console a full-featured one, so the first non-boot console registering will become the default console instead. This way the unregister call for the boot console in the register_console() function actually triggers and the handover from the boot console to the real console device works smoothly. Added a printk for the handover, so you know which console device the output goes to when the boot console stops printing messages. The disable_early_printk() call is obsolete with that patch, explicitly disabling the early console isn't needed any more as it works automagically with that patch. I've walked through the tree, dropped all disable_early_printk() instances found below arch/ and tagged the consoles with CON_BOOT if needed. The code is tested on x86, sh (thanks to Paul) and mips (thanks to Ralf). Changes to last version: Rediffed against -rc3, adapted to mips cleanups by Ralf, fixed "udbg-immortal" cmd line arg on powerpc. Signed-off-by: Gerd Hoffmann <kraxel@exsuse.de> Acked-by: Paul Mundt <lethal@linux-sh.org> Acked-by: Ralf Baechle <ralf@linux-mips.org> Cc: Andi Kleen <ak@suse.de> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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| .. | ||
| cpu | ||
| timers | ||
| vsyscall | ||
| asm-offsets.c | ||
| cf-enabler.c | ||
| cpufreq.c | ||
| crash_dump.c | ||
| debugtraps.S | ||
| early_printk.c | ||
| entry-common.S | ||
| head.S | ||
| init_task.c | ||
| io_generic.c | ||
| io.c | ||
| irq.c | ||
| kgdb_jmp.S | ||
| kgdb_stub.c | ||
| machine_kexec.c | ||
| Makefile | ||
| module.c | ||
| pm.c | ||
| process.c | ||
| ptrace.c | ||
| relocate_kernel.S | ||
| semaphore.c | ||
| setup.c | ||
| sh_bios.c | ||
| sh_ksyms.c | ||
| signal.c | ||
| smp.c | ||
| stacktrace.c | ||
| sys_sh.c | ||
| syscalls.S | ||
| time.c | ||
| traps.c | ||
| vmlinux.lds.S | ||