linux-kernel - [PATCH v4 7/8] platform/x86: think-lmi: Correct NVME index default

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Date:   Thu,  1 Jun 2023 16:05:51 -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 7/8] platform/x86: think-lmi: Correct NVME index default

The NVME/HDD index used by WMI starts at 1 so corrected the default
appropriately.
Note, zero index is still permitted in case it is required on future
platforms.
Documentation updated correspondingly

Signed-off-by: Mark Pearson <mpearson-lenovo@...ebb.ca>
---
Changes in v4:
 - New patch. Split out changes into separate commit as requested.
 - Update documentation.
 - Details on zero index added to commit message.

 Documentation/ABI/testing/sysfs-class-firmware-attributes | 4 ++--
 drivers/platform/x86/think-lmi.c                          | 4 ++++
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/Documentation/ABI/testing/sysfs-class-firmware-attributes b/Documentation/ABI/testing/sysfs-class-firmware-attributes
index 4cdba3477176..1b3ecae80b3d 100644
--- a/Documentation/ABI/testing/sysfs-class-firmware-attributes
+++ b/Documentation/ABI/testing/sysfs-class-firmware-attributes
@@ -243,8 +243,8 @@ Description:
 
 		index:
 					Used with HDD and NVME authentication to set the drive index
-					that is being referenced (e.g hdd0, hdd1 etc)
-					This attribute defaults to device 0.
+					that is being referenced (e.g hdd1, hdd2 etc)
+					This attribute defaults to device 1.
 
 		certificate, signature, save_signature:
 					These attributes are used for certificate based authentication. This is
diff --git a/drivers/platform/x86/think-lmi.c b/drivers/platform/x86/think-lmi.c
index 71bbe169c77e..2aaaee879488 100644
--- a/drivers/platform/x86/think-lmi.c
+++ b/drivers/platform/x86/think-lmi.c
@@ -1534,6 +1534,10 @@ static int tlmi_analyze(void)
 		if (!tlmi_priv.pwd_nvme)
 			goto fail_clear_attr;
 
+		/* Set default hdd/nvme index to 1 as there is no device 0 */
+		tlmi_priv.pwd_hdd->index = 1;
+		tlmi_priv.pwd_nvme->index = 1;
+
 		if (tlmi_priv.pwdcfg.core.password_state & TLMI_HDD_PWD) {
 			/* Check if PWD is configured and set index to first drive found */
 			if (tlmi_priv.pwdcfg.ext.hdd_user_password ||
-- 
2.40.1