1 files changed, 18 insertions, 5 deletions

diff --git a/drivers/acpi/ibm_acpi.c b/drivers/acpi/ibm_acpi.c
index 4001ad193ddc..3c091c4b461f 100644
--- a/drivers/acpi/ibm_acpi.c
+++ b/drivers/acpi/ibm_acpi.c
@@ -77,6 +77,7 @@
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/types.h>
+#include <linux/string.h>
 #include <linux/proc_fs.h>
 #include <linux/backlight.h>
 #include <asm/uaccess.h>
@@ -361,7 +362,7 @@ enum {					/* Fan control constants */
                                                  * control */
 };
 
-static int ibm_thinkpad_ec_found;
+static char* ibm_thinkpad_ec_found = NULL;
 
 struct ibm_struct {
         char *name;
@@ -2540,11 +2541,15 @@ static void acpi_ibm_exit(void)
                 ibm_exit(&ibms[i]);
 
         remove_proc_entry(IBM_DIR, acpi_root_dir);
+
+        if (ibm_thinkpad_ec_found)
+                kfree(ibm_thinkpad_ec_found);
 }
 
-static int __init check_dmi_for_ec(void)
+static char* __init check_dmi_for_ec(void)
 {
         struct dmi_device *dev = NULL;
+        char ec_fw_string[18];
 
         /*
          * ThinkPad T23 or newer, A31 or newer, R50e or newer,
@@ -2554,10 +2559,15 @@ static int __init check_dmi_for_ec(void)
          * See http://thinkwiki.org/wiki/List_of_DMI_IDs
          */
         while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
-                if (strstr(dev->name, "IBM ThinkPad Embedded Controller"))
-                        return 1;
+                if (sscanf(dev->name,
+                           "IBM ThinkPad Embedded Controller -[%17c",
+                           ec_fw_string) == 1) {
+                        ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
+                        ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
+                        return kstrdup(ec_fw_string, GFP_KERNEL);
+                }
         }
-        return 0;
+        return NULL;
 }
 
 static int __init acpi_ibm_init(void)
@@ -2581,6 +2591,9 @@ static int __init acpi_ibm_init(void)
 
         /* Models with newer firmware report the EC in DMI */
         ibm_thinkpad_ec_found = check_dmi_for_ec();
+        if (ibm_thinkpad_ec_found)
+                printk(IBM_INFO "ThinkPad EC firmware %s\n",
+                       ibm_thinkpad_ec_found);
 
         /* these handles are not required */
         IBM_HANDLE_INIT(vid);