return blacklisted;
 }
 #ifdef CONFIG_DMI
+static int __init dmi_enable_osi_linux(const struct dmi_system_id *d)
+{
+       acpi_dmi_osi_linux(1, d);       /* enable */
+       return 0;
+}
+
 static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
+       /*
+        * _OSI(Linux) helps sound
+        * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad R61"),
+        * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T61"),
+        */
+       {
+       .callback = dmi_enable_osi_linux,
+       .ident = "Lenovo ThinkPad R61",
+       .matches = {
+                    DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+                    DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad R61"),
+               },
+       },
+       {
+       .callback = dmi_enable_osi_linux,
+       .ident = "Lenovo ThinkPad T61",
+       .matches = {
+                    DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+                    DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T61"),
+               },
+       },
        {}
 };