lkml.org 
[lkml]   [2008]   [Sep]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    Date
    From
    Subject[patch 6/8] m68k: Define rtc_lock on Atari
    From: Geert Uytterhoeven <geert@linux-m68k.org>

    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 <geert@linux-m68k.org>
    ---
    arch/m68k/atari/time.c | 3 +++
    1 file changed, 3 insertions(+)

    --- a/arch/m68k/atari/time.c
    +++ b/arch/m68k/atari/time.c
    @@ -20,6 +20,9 @@

    #include <asm/atariints.h>

    +DEFINE_SPINLOCK(rtc_lock);
    +EXPORT_SYMBOL_GPL(rtc_lock);
    +
    void __init
    atari_sched_init(irq_handler_t timer_routine)
    {
    --
    Gr{oetje,eeting}s,
    Geert

    --
    Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

    In personal conversations with technical people, I call myself a hacker. But
    when I'm talking to journalists I just say "programmer" or something like that.
    -- Linus Torvalds



    \
     
     \ /
      Last update: 2008-09-03 09:23    [W:3.224 / U:0.644 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site