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author | Arnd Bergmann <arnd@arndb.de> | 2017-03-01 10:15:29 +0100 |
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committer | Guenter Roeck <linux@roeck-us.net> | 2017-03-01 06:15:10 -0800 |
commit | 3736d4eb6af37492aeded7fec0072dedd959c842 (patch) | |
tree | 20d8d96e44e8af895e3dee3003db3d0ba10c1088 /drivers/watchdog/Kconfig | |
parent | 8d5755b3f77b57447ce5de253ef704ad028474d3 (diff) |
watchdog: kempld: fix gcc-4.3 build
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: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/watchdog/Kconfig')
0 files changed, 0 insertions, 0 deletions