From: Sam Ravnborg <sam@ravnborg.org>

kbuild spits outs following warning on a
defconfig x86_64 build:
WARNING: swiotlb.o - Section mismatch: reference to .init.text:swiotlb_init from __ksymtab between '__ksymtab_swiotlb_init' (at offset 0xa0) and '__ksymtab_swiotlb_free_coherent'

This warning happens because the function swiotlb_init is marked __init and
EXPORT_SYMBOL().  A 'git grep swiotlb_init' showed no users in drivers/ so
remove the EXPORT_SYMBOL.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Andi Kleen <ak@suse.de>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 lib/swiotlb.c |    1 -
 1 file changed, 1 deletion(-)

diff -puN lib/swiotlb.c~fix-section-mismatch-warning-in-lib-swiotlbc lib/swiotlb.c
--- a/lib/swiotlb.c~fix-section-mismatch-warning-in-lib-swiotlbc
+++ a/lib/swiotlb.c
@@ -778,7 +778,6 @@ swiotlb_dma_supported(struct device *hwd
 	return virt_to_bus(io_tlb_end - 1) <= mask;
 }
 
-EXPORT_SYMBOL(swiotlb_init);
 EXPORT_SYMBOL(swiotlb_map_single);
 EXPORT_SYMBOL(swiotlb_unmap_single);
 EXPORT_SYMBOL(swiotlb_map_sg);
_