[tip: efi/urgent] efi: Pull up arch-specific prototype efi_systab_show_arch()

[tip-bot2 for Benjamin Thiel]

The following commit has been merged into the efi/urgent branch of tip:

Commit-ID:     e8da08a088236aff4b51d4ec97c750051f9fe417
Gitweb:        https://git.kernel.org/tip/e8da08a088236aff4b51d4ec97c750051f9fe417
Author:        Benjamin Thiel <b.thiel@xxxxxxxxx>
AuthorDate:    Sat, 16 May 2020 15:26:47 +02:00
Committer:     Ard Biesheuvel <ardb@xxxxxxxxxx>
CommitterDate: Sun, 17 May 2020 11:46:50 +02:00

efi: Pull up arch-specific prototype efi_systab_show_arch()

Pull up arch-specific prototype efi_systab_show_arch() in order to
fix a -Wmissing-prototypes warning:

arch/x86/platform/efi/efi.c:957:7: warning: no previous prototype for
âefi_systab_show_archâ [-Wmissing-prototypes]
char *efi_systab_show_arch(char *str)

Signed-off-by: Benjamin Thiel <b.thiel@xxxxxxxxx>
Link: https://lore.kernel.org/r/20200516132647.14568-1-b.thiel@xxxxxxxxx
Signed-off-by: Ard Biesheuvel <ardb@xxxxxxxxxx>
---
 drivers/firmware/efi/efi.c | 5 +----
 include/linux/efi.h        | 2 ++
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c
index 911a2bd..4e30552 100644
--- a/drivers/firmware/efi/efi.c
+++ b/drivers/firmware/efi/efi.c
@@ -130,11 +130,8 @@ static ssize_t systab_show(struct kobject *kobj,
 	if (efi.smbios != EFI_INVALID_TABLE_ADDR)
 		str += sprintf(str, "SMBIOS=0x%lx\n", efi.smbios);
 
-	if (IS_ENABLED(CONFIG_IA64) || IS_ENABLED(CONFIG_X86)) {
-		extern char *efi_systab_show_arch(char *str);
-
+	if (IS_ENABLED(CONFIG_IA64) || IS_ENABLED(CONFIG_X86))
 		str = efi_systab_show_arch(str);
-	}
 
 	return str - buf;
 }
diff --git a/include/linux/efi.h b/include/linux/efi.h
index 251f1f7..9430d01 100644
--- a/include/linux/efi.h
+++ b/include/linux/efi.h
@@ -1245,4 +1245,6 @@ struct linux_efi_memreserve {
 
 void __init efi_arch_mem_reserve(phys_addr_t addr, u64 size);
 
+char *efi_systab_show_arch(char *str);
+
 #endif /* _LINUX_EFI_H */