Commit 7ae4833a authored by Geert Uytterhoeven's avatar Geert Uytterhoeven Committed by Linus Torvalds

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: default avatarGeert Uytterhoeven <geert@linux-m68k.org>
Acked-by: default avatarMichael Schmitz <schmitz@debian.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 3e24fc94
...@@ -20,6 +20,9 @@ ...@@ -20,6 +20,9 @@
#include <asm/atariints.h> #include <asm/atariints.h>
DEFINE_SPINLOCK(rtc_lock);
EXPORT_SYMBOL_GPL(rtc_lock);
void __init void __init
atari_sched_init(irq_handler_t timer_routine) atari_sched_init(irq_handler_t timer_routine)
{ {
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment