linux-kernel - [PATCH 2/5] platform/x86: think-lmi: Correct System password interface

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Message-Id: <20230525193132.3727-2-mpearson-lenovo@squebb.ca>
Date:   Thu, 25 May 2023 15:31:29 -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
Subject: [PATCH 2/5] platform/x86: think-lmi: Correct System password interface

The system password identification was incorrect. This means that if
the password was enabled it wouldn't be detected correctly; and setting
it would not work.
Also updated code to use TLMI_SMP_PWD instead of TLMI_SYS_PWD to be in
sync with Lenovo documentation.

Correct these mistakes.

Signed-off-by: Mark Pearson <mpearson-lenovo@...ebb.ca>
---
Changes in V2:
 - Updated define name to be SMP_PWD instead of SYS_PWD
 - Clarified in comments what each password type is.

 drivers/platform/x86/think-lmi.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/platform/x86/think-lmi.c b/drivers/platform/x86/think-lmi.c
index 2745224f62ab..c7e98fbe7c3d 100644
--- a/drivers/platform/x86/think-lmi.c
+++ b/drivers/platform/x86/think-lmi.c
@@ -168,11 +168,11 @@ MODULE_PARM_DESC(debug_support, "Enable debug command support");
  */
 #define LENOVO_CERT_THUMBPRINT_GUID "C59119ED-1C0D-4806-A8E9-59AA318176C4"
 
-#define TLMI_POP_PWD (1 << 0)
-#define TLMI_PAP_PWD (1 << 1)
-#define TLMI_HDD_PWD (1 << 2)
-#define TLMI_SYS_PWD (1 << 3)
-#define TLMI_CERT    (1 << 7)
+#define TLMI_POP_PWD (1 << 0) /* Supervisor */
+#define TLMI_PAP_PWD (1 << 1) /* Power-on */
+#define TLMI_HDD_PWD (1 << 2) /* HDD/NVME */
+#define TLMI_SMP_PWD (1 << 6) /* System Management */
+#define TLMI_CERT    (1 << 7) /* Certificate Based */
 
 #define to_tlmi_pwd_setting(kobj)  container_of(kobj, struct tlmi_pwd_setting, kobj)
 #define to_tlmi_attr_setting(kobj)  container_of(kobj, struct tlmi_attr_setting, kobj)
@@ -1509,11 +1509,11 @@ static int tlmi_analyze(void)
 		tlmi_priv.pwd_power->valid = true;
 
 	if (tlmi_priv.opcode_support) {
-		tlmi_priv.pwd_system = tlmi_create_auth("sys", "system");
+		tlmi_priv.pwd_system = tlmi_create_auth("smp", "system");
 		if (!tlmi_priv.pwd_system)
 			goto fail_clear_attr;
 
-		if (tlmi_priv.pwdcfg.core.password_state & TLMI_SYS_PWD)
+		if (tlmi_priv.pwdcfg.core.password_state & TLMI_SMP_PWD)
 			tlmi_priv.pwd_system->valid = true;
 
 		tlmi_priv.pwd_hdd = tlmi_create_auth("hdd", "hdd");
-- 
2.40.1