i915.ko does not build due to the following function in i915_debugfs.c:
i915_min_freq_set(void *data, u64 val)
{
...
dev_priv->rps.min_delay = val / GT_FREQUENCY_MULTIPLIER;
...
}
Doing a 64bit integer division on 32bit requires a
compiler run time library to be linked in, otherwise
the symbol __udivdi3 will be missing.
This was introduced with
commit 2389cc5006861a8e024a23cb73605f2ab6a5afe8
Author: Kees Cook <keesc...@chromium.org>
Date: Sun Mar 10 14:10:06 2013 -0700
drm/i915: use simple attribute in debugfs routines
before this val was a simple int.
Cheers,
Egbert.
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