From e5208d95a7f56894fa48bb9fa228579a610d3330 Mon Sep 17 00:00:00 2001
From: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Date: Sat, 26 Apr 2008 01:02:20 -0300
Subject: [PATCH] --- yaml --- r: 95526 b: refs/heads/master c:
 2d5e94d7ca315f859a0eee1366838e8ad34dd7b2 h: refs/heads/master v: v3

---
 [refs]                             |  2 +-
 trunk/drivers/misc/thinkpad_acpi.c | 22 +++++++++++++++-------
 2 files changed, 16 insertions(+), 8 deletions(-)

diff --git a/[refs] b/[refs]
index b10ae4265911..05c9d1d02a35 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 8c74adbc692a3cb040cc69d7ca3dfd86d75860a8
+refs/heads/master: 2d5e94d7ca315f859a0eee1366838e8ad34dd7b2
diff --git a/trunk/drivers/misc/thinkpad_acpi.c b/trunk/drivers/misc/thinkpad_acpi.c
index 601dbe8b407a..7dc6b73e8f5b 100644
--- a/trunk/drivers/misc/thinkpad_acpi.c
+++ b/trunk/drivers/misc/thinkpad_acpi.c
@@ -239,6 +239,7 @@ static struct {
 
 static struct {
 	u16 hotkey_mask_ff:1;
+	u16 bright_cmos_ec_unsync:1;
 } tp_warned;
 
 struct thinkpad_id_data {
@@ -4323,13 +4324,20 @@ static int brightness_get(struct backlight_device *bd)
 		level = lcmos;
 	}
 
-	if (brightness_mode == 3 && lec != lcmos) {
-		printk(TPACPI_ERR
-			"CMOS NVRAM (%u) and EC (%u) do not agree "
-			"on display brightness level\n",
-			(unsigned int) lcmos,
-			(unsigned int) lec);
-		return -EIO;
+	if (brightness_mode == 3) {
+		if (lec == lcmos)
+			tp_warned.bright_cmos_ec_unsync = 0;
+		else {
+			if (!tp_warned.bright_cmos_ec_unsync) {
+				printk(TPACPI_ERR
+					"CMOS NVRAM (%u) and EC (%u) do not "
+					"agree on display brightness level\n",
+					(unsigned int) lcmos,
+					(unsigned int) lec);
+				tp_warned.bright_cmos_ec_unsync = 1;
+			}
+			return -EIO;
+		}
 	}
 
 	return level;