• Arnd Bergmann's avatar
    watchdog: kempld: fix gcc-4.3 build · 3736d4eb
    Arnd Bergmann authored
    gcc-4.3 can't decide whether the constant value in
    kempld_prescaler[PRESCALER_21] is built-time constant or
    not, and gets confused by the logic in do_div():
    drivers/watchdog/kempld_wdt.o: In function `kempld_wdt_set_stage_timeout':
    kempld_wdt.c:(.text.kempld_wdt_set_stage_timeout+0x130): undefined reference to `__aeabi_uldivmod'
    This adds a call to ACCESS_ONCE() to force it to not consider
    it to be constant, and leaves the more efficient normal case
    in place for modern compilers, using an #ifdef to annotate
    why we do this hack.
    Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
    Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
kempld_wdt.c 14.6 KB