* [BUG-REPORT] [PREEMPT_RT] Build break with DRM_I915 and HAVE_ATOMIC_IOMAP
@ 2010-03-17 14:08 John Kacur
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From: John Kacur @ 2010-03-17 14:08 UTC (permalink / raw)
To: Thomas Gleixner, RT; +Cc: LKML, tremyfr
This is a compile failure on 2.6.33.1-rt9 on x86
ERROR: "iounmap_atomic" [drivers/gpu/drm/i915/i915.ko] undefined!
ERROR: "iomap_atomic_prot_pfn" [drivers/gpu/drm/i915/i915.ko] undefined!
Analysis:
i915_drv.c and i915_gem.c include i915_drv.h which includes io_mapping.h
file: io_mapping.h
has function io_mapping_map_atomic_wc which calls iomap_atomic_prot_pfn
has function io_mapping_unmap_atomic which calls iounmap_atomic
These functions are defined in iomap_32.c but not ifdef PREEMPT_RT
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2010-03-17 14:08 [BUG-REPORT] [PREEMPT_RT] Build break with DRM_I915 and HAVE_ATOMIC_IOMAP John Kacur
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