diff --git a/[refs] b/[refs]
index 9316ce52897f..627ad64e5bbf 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: ef07a5abadfcb2470fc9cbfbee0cb41076b4ba9b
+refs/heads/master: 7d9745cf239ca98cf1f694bff4765a276b05ee68
diff --git a/trunk/drivers/platform/x86/thinkpad_acpi.c b/trunk/drivers/platform/x86/thinkpad_acpi.c
index b3bfce953838..4bdb13796e24 100644
--- a/trunk/drivers/platform/x86/thinkpad_acpi.c
+++ b/trunk/drivers/platform/x86/thinkpad_acpi.c
@@ -6397,6 +6397,10 @@ static int __init brightness_init(struct ibm_init_struct *iibm)
 			"or not on your ThinkPad\n", TPACPI_MAIL);
 	}
 
+	/* Added by mistake in early 2007.  Probably useless, but it could
+	 * be working around some unknown firmware problem where the value
+	 * read at startup doesn't match the real hardware state... so leave
+	 * it in place just in case */
 	backlight_update_status(ibm_backlight_device);
 
 	vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,