From 1f7a8b3389d66f279bf75fcfdd10c1c7d2561d6e Mon Sep 17 00:00:00 2001
From: Heinrich Schuchardt <xypron.glpk@gmx.de>
Date: Sat, 15 Jun 2019 12:58:30 +0200
Subject: [PATCH] efi_loader: SetMode() parameters check
If EFI_GRAPHICS_OUTPUT_PROTOCOL.SetMode() is called with an invalid mode,
return EFI_UNSUPPORTED.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@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)
--
2.39.5