linux-kernel - Re: [PATCH v3 3/5] platform/x86: think-lmi: Correct NVME password handling

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Date:   Mon, 29 May 2023 15:03:43 +0300 (EEST)
From:   Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
To:     Mark Pearson <mpearson-lenovo@...ebb.ca>
cc:     hdegoede@...hat.com, markgross@...nel.org,
        platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 3/5] platform/x86: think-lmi: Correct NVME password
 handling

On Fri, 26 May 2023, Mark Pearson wrote:

> NVME passwords identifier have been standardised across the Lenovo
> systems and now use udrp and adrp (user and admin level) instead of
> unvp and mnvp.
> 
> This should apparently be backwards compatible.
> 
> Also cleaned up so the index is set to a default of 1 rather than 0
> as this just makes more sense (there is no device 0).

These two sound entirely separate changes. If that's the case, please 
make own patch from the send change.

Hmm, index_store() still allows 0, is that also related here? Please check 
also ABI documentation as index default seems to be mentioned there as 
well.

-- 
 i.

> Signed-off-by: Mark Pearson <mpearson-lenovo@...ebb.ca>
> ---
> Changes in v2 & v3: None. Version bumped in series
> 
>  drivers/platform/x86/think-lmi.c | 8 ++++++--
>  1 file changed, 6 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/platform/x86/think-lmi.c b/drivers/platform/x86/think-lmi.c
> index c7e98fbe7c3d..1c02958035ad 100644
> --- a/drivers/platform/x86/think-lmi.c
> +++ b/drivers/platform/x86/think-lmi.c
> @@ -456,9 +456,9 @@ static ssize_t new_password_store(struct kobject *kobj,
>  				sprintf(pwd_type, "mhdp%d", setting->index);
>  		} else if (setting == tlmi_priv.pwd_nvme) {
>  			if (setting->level == TLMI_LEVEL_USER)
> -				sprintf(pwd_type, "unvp%d", setting->index);
> +				sprintf(pwd_type, "udrp%d", setting->index);
>  			else
> -				sprintf(pwd_type, "mnvp%d", setting->index);
> +				sprintf(pwd_type, "adrp%d", setting->index);
>  		} else {
>  			sprintf(pwd_type, "%s", setting->pwd_type);
>  		}
> @@ -1524,6 +1524,10 @@ 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 ||
>