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platform/x86: think-lmi: Fix check for admin password being set 

tlmi_priv.pwd_admin->password is an array (not a pointer), so the correct
way to check for the password being set is to check for
tlmi_priv.pwd_admin->password[0] != 0.

For the second check, replace the check with checking that auth_str is
set instead.

Cc: Mark Pearson <markpearson@lenovo.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Reported-by: coverity-bot <keescook+coverity-bot@chromium.org>
Addresses-Coverity-ID: 1505158 ("NO_EFFECT")
Fixes: a7314b3b1d8a ("platform/x86: think-lmi: Add WMI interface support on Lenovo platforms")
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20210609151752.156902-1-hdegoede@redhat.com
This commit is contained in:
Hans de Goede 2021-06-09 17:17:51 +02:00
parent cb58c277ff
commit 86bb2e3daf
1 changed files with 2 additions and 2 deletions
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4
drivers/platform/x86/think-lmi.c
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@ -537,7 +537,7 @@ static ssize_t current_value_store(struct kobject *kobj,
p = strchrnul(new_setting, '\n');
*p = '\0';
if (tlmi_priv.pwd_admin->valid && tlmi_priv.pwd_admin->password) {
if (tlmi_priv.pwd_admin->valid && tlmi_priv.pwd_admin->password[0]) {
auth_str = kasprintf(GFP_KERNEL, "%s,%s,%s;",
tlmi_priv.pwd_admin->password,
encoding_options[tlmi_priv.pwd_admin->encoding],
@ -563,7 +563,7 @@ static ssize_t current_value_store(struct kobject *kobj,
if (ret)
goto out;
if (tlmi_priv.pwd_admin->valid && tlmi_priv.pwd_admin->password)
if (auth_str)
ret = tlmi_save_bios_settings(auth_str);
else
ret = tlmi_save_bios_settings("");