linux-kernel - [PATCH v4 8/8] platform/x86: think-lmi: Don't display unnecessary authentication settings

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20230601200552.4396-8-mpearson-lenovo@squebb.ca>
Date:   Thu,  1 Jun 2023 16:05:52 -0400
From:   Mark Pearson <mpearson-lenovo@...ebb.ca>
To:     mpearson-lenovo@...ebb.ca
Cc:     hdegoede@...hat.com, markgross@...nel.org,
        platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org,
        ilpo.jarvinen@...ux.intel.com
Subject: [PATCH v4 8/8] platform/x86: think-lmi: Don't display unnecessary authentication settings

If Opcode support is available (which is the standard for all platforms
going forward) then there is no need to have the encoding and kbdlang
attributes visible.

Signed-off-by: Mark Pearson <mpearson-lenovo@...ebb.ca>
---
Changes in v2 & v3:
 - None. Version bumped in series.
Changes in v4:
 - Fixed code alignment as requested.
 - This patch was previously #4 and is now #8 in series.

 drivers/platform/x86/think-lmi.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/platform/x86/think-lmi.c b/drivers/platform/x86/think-lmi.c
index 2aaaee879488..52d1ce8dfe44 100644
--- a/drivers/platform/x86/think-lmi.c
+++ b/drivers/platform/x86/think-lmi.c
@@ -885,6 +885,11 @@ static umode_t auth_attr_is_visible(struct kobject *kobj,
 		return 0;
 	}
 
+	/* Don't display un-needed settings if opcode available */
+	if ((attr == &auth_encoding.attr || attr == &auth_kbdlang.attr) &&
+	    tlmi_priv.opcode_support)
+		return 0;
+
 	return attr->mode;
 }
 
-- 
2.40.1