[PATCH v2] powerpc/msi: fix section mismatch warning

Denis Kirjanov kda at linux-powerpc.org
Wed Oct 21 22:29:13 AEDT 2015

gives the following warning:

WARNING: vmlinux.o(.text+0x41fa8): Section mismatch in reference from
the function .msi_bitmap_alloc() to the function
The function .msi_bitmap_alloc() references
the function __init .memblock_virt_alloc_try_nid().
This is often because .msi_bitmap_alloc lacks a __init
annotation or the annotation of .memblock_virt_alloc_try_nid is wrong.

memory allocation in msi_bitmap_alloc use either slab allocator or
memblock boot-time allocator so that's why we need the __init_refok
for the latter case.

Signed-off-by: Denis Kirjanov <kda at linux-powerpc.org>
 arch/powerpc/sysdev/msi_bitmap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/sysdev/msi_bitmap.c b/arch/powerpc/sysdev/msi_bitmap.c
index 1a826f3..ed5234e 100644
--- a/arch/powerpc/sysdev/msi_bitmap.c
+++ b/arch/powerpc/sysdev/msi_bitmap.c
@@ -112,7 +112,7 @@ int msi_bitmap_reserve_dt_hwirqs(struct msi_bitmap *bmp)
 	return 0;
-int msi_bitmap_alloc(struct msi_bitmap *bmp, unsigned int irq_count,
+int __init_refok msi_bitmap_alloc(struct msi_bitmap *bmp, unsigned int irq_count,
 		     struct device_node *of_node)
 	int size;

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