From mboxrd@z Thu Jan 1 00:00:00 1970 From: dhylands@gmail.com (Dave Hylands) Date: Sun, 5 Jun 2011 22:12:36 -0700 Subject: Problems with disabling Optimization In-Reply-To: <20110606025247.GC15480@internetdog.org> References: <20110606025247.GC15480@internetdog.org> Message-ID: To: kernelnewbies@lists.kernelnewbies.org List-Id: kernelnewbies.lists.kernelnewbies.org Hi Ali, On Sun, Jun 5, 2011 at 7:52 PM, Ali Bahar wrote: >> ? ? ? ? ? ? ? ?Disabling O2 and Os on Kernel building, I am getting the >> following error. Can you please help me in debugging this. > >> ERROR: "intel_gmbus_is_forced_bit" [drivers/gpu/drm/i915/i915.ko] undefined! >> ERROR: "__udivdi3" [drivers/gpu/drm/i915/i915.ko] undefined! >> make[2]: *** [__modpost] Error 1 >> make[1]: *** [modules] Error 2 >> make: *** [sub-make] Error 2 > > It's been a while since I (last) disabled these, but I did not run > into a compilation error because of it. And I recall the box needing > i915, too. ?Is this a case of simply needing to do a _clean_ build? It's a case of needing to replace the 64-bit division with something that involves a call to do_div, or otherwise eliminating the 64 bit division. -- Dave Hylands Shuswap, BC, Canada http://www.davehylands.com