linux-kernel - [PATCH 1/1] efi/efivars: ConInDev, ConOutDev, ConErrDev are volatile

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Date:   Thu, 18 Feb 2021 21:18:49 +0100
From:   Heinrich Schuchardt <xypron.glpk@....de>
To:     Ard Biesheuvel <ardb@...nel.org>
Cc:     linux-efi@...r.kernel.org, linux-kernel@...r.kernel.org,
        Heinrich Schuchardt <xypron.glpk@....de>
Subject: [PATCH 1/1] efi/efivars: ConInDev, ConOutDev, ConErrDev are volatile

UEFI variables ConInDev, ConOutDev, ConErrDev are volatile variables that
are set by the firmware on every reset. It does not make sense to set these
variables via the efivarfs filesystem.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@....de>
---
 drivers/firmware/efi/vars.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/firmware/efi/vars.c b/drivers/firmware/efi/vars.c
index 41c1d00bf933..561e0a01093b 100644
--- a/drivers/firmware/efi/vars.c
+++ b/drivers/firmware/efi/vars.c
@@ -180,11 +180,8 @@ static const struct variable_validate variable_validate[] = {
 	{ EFI_GLOBAL_VARIABLE_GUID, "DriverOrder", validate_boot_order },
 	{ EFI_GLOBAL_VARIABLE_GUID, "Driver*", validate_load_option },
 	{ EFI_GLOBAL_VARIABLE_GUID, "ConIn", validate_device_path },
-	{ EFI_GLOBAL_VARIABLE_GUID, "ConInDev", validate_device_path },
 	{ EFI_GLOBAL_VARIABLE_GUID, "ConOut", validate_device_path },
-	{ EFI_GLOBAL_VARIABLE_GUID, "ConOutDev", validate_device_path },
 	{ EFI_GLOBAL_VARIABLE_GUID, "ErrOut", validate_device_path },
-	{ EFI_GLOBAL_VARIABLE_GUID, "ErrOutDev", validate_device_path },
 	{ EFI_GLOBAL_VARIABLE_GUID, "Lang", validate_ascii_string },
 	{ EFI_GLOBAL_VARIABLE_GUID, "OsIndications", NULL },
 	{ EFI_GLOBAL_VARIABLE_GUID, "PlatformLang", validate_ascii_string },
--
2.30.0