[RFC PATCH] arm64/efi: remove /chosen/linux, uefi-stub-kern-ver DT property

[Ard Biesheuvel]

With the stub to kernel interface being promoted to a proper interface
so that other agents than the stub can boot the kernel proper in EFI
mode, we can remove the linux,uefi-stub-kern-ver field, considering
that its original purpose was to prevent this from happening in the
first place.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel at linaro.org>
---
 Documentation/arm/uefi.txt         | 2 --
 drivers/firmware/efi/libstub/fdt.c | 9 ---------
 2 files changed, 11 deletions(-)

diff --git a/Documentation/arm/uefi.txt b/Documentation/arm/uefi.txt
index 7b3fdfe0f7ba..6543a0adea8a 100644
--- a/Documentation/arm/uefi.txt
+++ b/Documentation/arm/uefi.txt
@@ -58,5 +58,3 @@ linux,uefi-mmap-desc-size | 32-bit | Size in bytes of each entry in the UEFI
 --------------------------------------------------------------------------------
 linux,uefi-mmap-desc-ver  | 32-bit | Version of the mmap descriptor format.
 --------------------------------------------------------------------------------
-linux,uefi-stub-kern-ver  | string | Copy of linux_banner from build.
---------------------------------------------------------------------------------
diff --git a/drivers/firmware/efi/libstub/fdt.c b/drivers/firmware/efi/libstub/fdt.c
index a7e87cd582f2..60a11551fc15 100644
--- a/drivers/firmware/efi/libstub/fdt.c
+++ b/drivers/firmware/efi/libstub/fdt.c
@@ -116,15 +116,6 @@ efi_status_t update_fdt(efi_system_table_t *sys_table, void *orig_fdt,
 	if (status)
 		goto fdt_set_fail;
 
-	/*
-	 * Add kernel version banner so stub/kernel match can be
-	 * verified.
-	 */
-	status = fdt_setprop_string(fdt, node, "linux,uefi-stub-kern-ver",
-			     linux_banner);
-	if (status)
-		goto fdt_set_fail;
-
 	return EFI_SUCCESS;
 
 fdt_set_fail:
-- 
1.9.1