diff options
| -rw-r--r-- | drivers/platform/x86/dell/dell-wmi-ddv.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/platform/x86/dell/dell-wmi-ddv.c b/drivers/platform/x86/dell/dell-wmi-ddv.c index 1a001296e8c6..2bb449845d14 100644 --- a/drivers/platform/x86/dell/dell-wmi-ddv.c +++ b/drivers/platform/x86/dell/dell-wmi-ddv.c @@ -10,12 +10,14 @@ #include <linux/acpi.h> #include <linux/debugfs.h> #include <linux/device.h> +#include <linux/dev_printk.h> #include <linux/kernel.h> #include <linux/kstrtox.h> #include <linux/math.h> #include <linux/module.h> #include <linux/limits.h> #include <linux/power_supply.h> +#include <linux/printk.h> #include <linux/seq_file.h> #include <linux/sysfs.h> #include <linux/wmi.h> @@ -27,6 +29,9 @@ #define DELL_DDV_SUPPORTED_INTERFACE 2 #define DELL_DDV_GUID "8A42EA14-4F2A-FD45-6422-0087F7A7E608" +#define DELL_EPPID_LENGTH 20 +#define DELL_EPPID_EXT_LENGTH 23 + enum dell_ddv_method { DELL_DDV_BATTERY_DESIGN_CAPACITY = 0x01, DELL_DDV_BATTERY_FULL_CHARGE_CAPACITY = 0x02, @@ -196,6 +201,10 @@ static ssize_t eppid_show(struct device *dev, struct device_attribute *attr, cha if (ret < 0) return ret; + if (obj->string.length != DELL_EPPID_LENGTH && obj->string.length != DELL_EPPID_EXT_LENGTH) + dev_info_once(&data->wdev->dev, FW_INFO "Suspicious ePPID length (%d)\n", + obj->string.length); + ret = sysfs_emit(buf, "%s\n", obj->string.pointer); kfree(obj); |