[PATCH 1/2] efi_loader: refine set_keyboard_layout() status

[Vincent Stehlé]

As per the EFI specification, the HII database protocol function
set_keyboard_layout() must return EFI_INVALID_PARAMETER when it is called
with a NULL key_guid argument. Modify the function accordingly to improve
conformance.

Signed-off-by: Vincent Stehlé <vincent.stehle at arm.com>
Cc: Heinrich Schuchardt <xypron.glpk at gmx.de>
Cc: Ilias Apalodimas <ilias.apalodimas at linaro.org>
---
 lib/efi_loader/efi_hii.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/efi_loader/efi_hii.c b/lib/efi_loader/efi_hii.c
index 27db3be6a17..3b54ecb11ac 100644
--- a/lib/efi_loader/efi_hii.c
+++ b/lib/efi_loader/efi_hii.c
@@ -758,6 +758,9 @@ set_keyboard_layout(const struct efi_hii_database_protocol *this,
 {
 	EFI_ENTRY("%p, %pUs", this, key_guid);
 
+	if (!key_guid)
+		return EFI_EXIT(EFI_INVALID_PARAMETER);
+
 	return EFI_EXIT(EFI_NOT_FOUND);
 }
 
-- 
2.39.0