[PATCH RFC/RFT 1/3] efi/libstub: Export efi_low_alloc_above() to other units

[Ard Biesheuvel]

Permit arm32-stub.c to access efi_low_alloc_above() in a subsequent
patch by giving it external linkage and declaring it in efistub.h.

Signed-off-by: Ard Biesheuvel <ardb at kernel.org>
---
 drivers/firmware/efi/libstub/efistub.h  | 3 +++
 drivers/firmware/efi/libstub/relocate.c | 4 ++--
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/firmware/efi/libstub/efistub.h b/drivers/firmware/efi/libstub/efistub.h
index 85050f5a1b28..158f86f1f9fc 100644
--- a/drivers/firmware/efi/libstub/efistub.h
+++ b/drivers/firmware/efi/libstub/efistub.h
@@ -740,6 +740,9 @@ efi_status_t efi_allocate_pages(unsigned long size, unsigned long *addr,
 efi_status_t efi_allocate_pages_aligned(unsigned long size, unsigned long *addr,
 					unsigned long max, unsigned long align);
 
+efi_status_t efi_low_alloc_above(unsigned long size, unsigned long align,
+				 unsigned long *addr, unsigned long min);
+
 efi_status_t efi_relocate_kernel(unsigned long *image_addr,
 				 unsigned long image_size,
 				 unsigned long alloc_size,
diff --git a/drivers/firmware/efi/libstub/relocate.c b/drivers/firmware/efi/libstub/relocate.c
index 9b1aaf8b123f..8ee9eb2b9039 100644
--- a/drivers/firmware/efi/libstub/relocate.c
+++ b/drivers/firmware/efi/libstub/relocate.c
@@ -20,8 +20,8 @@
  *
  * Return:	status code
  */
-static efi_status_t efi_low_alloc_above(unsigned long size, unsigned long align,
-					unsigned long *addr, unsigned long min)
+efi_status_t efi_low_alloc_above(unsigned long size, unsigned long align,
+				 unsigned long *addr, unsigned long min)
 {
 	unsigned long map_size, desc_size, buff_size;
 	efi_memory_desc_t *map;
-- 
2.17.1