Messages in this thread | | | Date | Mon, 25 Jul 2011 11:22:35 +1000 | From | Ryan Mallon <> | Subject | Re: GMA500: ERROR: "__bad_udelay" undefined! |
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On 25/07/11 07:37, Jesper Juhl wrote: > Just got this when building the attached .config on x86_64 with gcc 4.6.1 > on up-to-date mainline git tree (head at > b6844e8f64920cdee620157252169ba63afb0c89) : > > ERROR: "__bad_udelay" [drivers/staging/gma500/psb_gfx.ko] undefined! > make[1]: *** [__modpost] Error 1 > > I don't need gma500, so I've just disabled the driver to get around it but > I thought some people might still like to know :) > __bad_udelay is a compile time check that constant udelays do not exceed a certain threshold. For x86_64 it used to be n > 20000, now it is n / 20000 >= 1. The problem is in drivers/staging/gma500/psb_intel_display.c:psb_init_wait_for_vblank, which does udelay(20000) which under the old code would have been fine, but fails the new __bad_udelay check.
Possibly the udelay can just be converted to an mdelay?
~Ryan
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