If EFI_GRAPHICS_OUTPUT_PROTOCOL.SetMode() is called with an invalid mode,
return EFI_UNSUPPORTED.

Signed-off-by: Heinrich Schuchardt <xypron.g...@gmx.de>
---
 lib/efi_loader/efi_gop.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/lib/efi_loader/efi_gop.c b/lib/efi_loader/efi_gop.c
index c44a1cfc47..676463f2de 100644
--- a/lib/efi_loader/efi_gop.c
+++ b/lib/efi_loader/efi_gop.c
@@ -60,12 +60,14 @@ out:

 static efi_status_t EFIAPI gop_set_mode(struct efi_gop *this, u32 mode_number)
 {
+       efi_status_t ret = EFI_SUCCESS;
+
        EFI_ENTRY("%p, %x", this, mode_number);

-       if (mode_number != 0)
-               return EFI_EXIT(EFI_INVALID_PARAMETER);
+       if (mode_number)
+               ret = EFI_UNSUPPORTED;

-       return EFI_EXIT(EFI_SUCCESS);
+       return EFI_EXIT(ret);
 }

 static __always_inline struct efi_gop_pixel efi_vid16_to_blt_col(u16 vid)
--
2.20.1

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