fix-gcc-4.3-false-modulo-optimization.patch

fix-gcc-4.3-false-modulo-optimization.patch

I tried to compile the current stable kernel
(a2ef813d2f439a3e9f377d33a2e5baad098afb7e)
and get the following errors:

kernel/built-in.o: In function `timespec_add_ns':
/mnt/data/Freerunner/Gentoo/rootinstall/usr/src/linux/include/linux/time.h:174:
undefined reference to `__aeabi_uldivmod'
/mnt/data/Freerunner/Gentoo/rootinstall/usr/src/linux/include/linux/time.h:179:
undefined reference to `__aeabi_uldivmod'
/mnt/data/Freerunner/Gentoo/rootinstall/usr/src/linux/include/linux/time.h:174:
undefined reference to `__aeabi_uldivmod'
/mnt/data/Freerunner/Gentoo/rootinstall/usr/src/linux/include/linux/time.h:179:
undefined reference to `__aeabi_uldivmod'

applying the following patch solved the problem:
--------
Prevent gcc-4.3 form "optimizing" the while loop into a costly modulo operation.
Patch found at http://lkml.org/lkml/2008/2/22/464.

Reported-by: Sven Rebhan <odinshorse@googlemail.com>
Signed-off-by: Segher Boessenkool <segher@kernel.crashing.org>