6.12-stable review patch. If anyone has any objections, please let me know.
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From: Mark Pearson mpearson-lenovo@squebb.ca
[ Upstream commit 8508427a6e21c1ef01ae4c9f4e2675fc99deb949 ]
A few, quite rare, WMI attributes have names that are not compatible with filenames, e.g. "Intel VT for Directed I/O (VT-d)". For these cases the '/' gets replaced with '' for display, but doesn't get switched again when doing the WMI access.
Fix this by keeping the original attribute name and using that for sending commands to the BIOS
Fixes: a40cd7ef22fb ("platform/x86: think-lmi: Add WMI interface support on Lenovo platforms") Signed-off-by: Mark Pearson mpearson-lenovo@squebb.ca Link: https://lore.kernel.org/r/20250520005027.3840705-1-mpearson-lenovo@squebb.ca Reviewed-by: Ilpo Järvinen ilpo.jarvinen@linux.intel.com Signed-off-by: Ilpo Järvinen ilpo.jarvinen@linux.intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/platform/x86/think-lmi.c | 26 ++++++++++++++------------ drivers/platform/x86/think-lmi.h | 1 + 2 files changed, 15 insertions(+), 12 deletions(-)
diff --git a/drivers/platform/x86/think-lmi.c b/drivers/platform/x86/think-lmi.c index 4cfb53206cb84..1abd8378f158d 100644 --- a/drivers/platform/x86/think-lmi.c +++ b/drivers/platform/x86/think-lmi.c @@ -995,8 +995,8 @@ static ssize_t current_value_store(struct kobject *kobj, ret = -EINVAL; goto out; } - set_str = kasprintf(GFP_KERNEL, "%s,%s,%s", setting->display_name, - new_setting, tlmi_priv.pwd_admin->signature); + set_str = kasprintf(GFP_KERNEL, "%s,%s,%s", setting->name, + new_setting, tlmi_priv.pwd_admin->signature); if (!set_str) { ret = -ENOMEM; goto out; @@ -1026,7 +1026,7 @@ static ssize_t current_value_store(struct kobject *kobj, goto out; }
- set_str = kasprintf(GFP_KERNEL, "%s,%s;", setting->display_name, + set_str = kasprintf(GFP_KERNEL, "%s,%s;", setting->name, new_setting); if (!set_str) { ret = -ENOMEM; @@ -1054,11 +1054,11 @@ static ssize_t current_value_store(struct kobject *kobj, }
if (auth_str) - set_str = kasprintf(GFP_KERNEL, "%s,%s,%s", setting->display_name, - new_setting, auth_str); + set_str = kasprintf(GFP_KERNEL, "%s,%s,%s", setting->name, + new_setting, auth_str); else - set_str = kasprintf(GFP_KERNEL, "%s,%s;", setting->display_name, - new_setting); + set_str = kasprintf(GFP_KERNEL, "%s,%s;", setting->name, + new_setting); if (!set_str) { ret = -ENOMEM; goto out; @@ -1568,9 +1568,6 @@ static int tlmi_analyze(void) continue; }
- /* It is not allowed to have '/' for file name. Convert it into ''. */ - strreplace(item, '/', '\'); - /* Remove the value part */ strreplace(item, ',', '\0');
@@ -1582,11 +1579,16 @@ static int tlmi_analyze(void) goto fail_clear_attr; } setting->index = i; + + strscpy(setting->name, item); + /* It is not allowed to have '/' for file name. Convert it into ''. */ + strreplace(item, '/', '\'); strscpy(setting->display_name, item); + /* If BIOS selections supported, load those */ if (tlmi_priv.can_get_bios_selections) { - ret = tlmi_get_bios_selections(setting->display_name, - &setting->possible_values); + ret = tlmi_get_bios_selections(setting->name, + &setting->possible_values); if (ret || !setting->possible_values) pr_info("Error retrieving possible values for %d : %s\n", i, setting->display_name); diff --git a/drivers/platform/x86/think-lmi.h b/drivers/platform/x86/think-lmi.h index e1975ffebeb42..7f9632a53736f 100644 --- a/drivers/platform/x86/think-lmi.h +++ b/drivers/platform/x86/think-lmi.h @@ -84,6 +84,7 @@ struct tlmi_pwd_setting { struct tlmi_attr_setting { struct kobject kobj; int index; + char name[TLMI_SETTINGS_MAXLEN]; char display_name[TLMI_SETTINGS_MAXLEN]; char *possible_values; };