From 7ae4833af0dda3bdfb65004856c3f83871fd8ce4 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Mon, 13 Oct 2008 21:58:55 +0200 Subject: [PATCH] m68k: Define rtc_lock on Atari The nvram and rtc-cmos drivers use the spinlock rtc_lock to protect against concurrent accesses to the CMOS memory. As m68k doesn't support SMP or preempt yet, the spinlock calls tend to get optimized away, but not for all configurations, causing in some rare cases: | ERROR: "rtc_lock" [drivers/rtc/rtc-cmos.ko] undefined! | ERROR: "rtc_lock" [drivers/char/nvram.ko] undefined! Add the spinlock to the Atari core code to avoid this. Signed-off-by: Geert Uytterhoeven Acked-by: Michael Schmitz Signed-off-by: Linus Torvalds --- arch/m68k/atari/time.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/m68k/atari/time.c b/arch/m68k/atari/time.c index e2df4a13d2bb..1edde27fa32d 100644 --- a/arch/m68k/atari/time.c +++ b/arch/m68k/atari/time.c @@ -20,6 +20,9 @@ #include +DEFINE_SPINLOCK(rtc_lock); +EXPORT_SYMBOL_GPL(rtc_lock); + void __init atari_sched_init(irq_handler_t timer_routine) { -- 2.30.2