gpu/drm, x86, PAT: PAT support for io_mapping_*, export symbols for modules

Impact: build fix

 ERROR: "reserve_io_memtype_wc" [drivers/gpu/drm/i915/i915.ko] undefined!
 ERROR: "free_io_memtype" [drivers/gpu/drm/i915/i915.ko] undefined!

Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 2 insertions, 0 deletions

diff --git a/arch/x86/mm/iomap_32.c b/arch/x86/mm/iomap_32.c
index 94596f794b1b..d5e28424622c 100644
--- a/arch/x86/mm/iomap_32.c
+++ b/arch/x86/mm/iomap_32.c
@@ -68,6 +68,7 @@ out_free:
 out_err:
         return -EINVAL;
 }
+EXPORT_SYMBOL_GPL(reserve_io_memtype_wc);
 
 void
 free_io_memtype(u64 base, unsigned long size)
@@ -75,6 +76,7 @@ free_io_memtype(u64 base, unsigned long size)
         if (pat_enabled)
                 free_memtype(base, base + size);
 }
+EXPORT_SYMBOL_GPL(free_io_memtype);
 
 /* Map 'pfn' using fixed map 'type' and protections 'prot'
  */