From 03aef438fb213862e0e3ef7a9060de974864133b Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai@suse.de>
Date: Thu, 1 Apr 2010 16:04:13 +0200
Subject: [PATCH] --- yaml --- r: 193277 b: refs/heads/master c:
 7a2e38a555f2b1a20aaaf30f3d8ecad8faa97ea7 h: refs/heads/master i:   193275:
 aa27c8f50f2c5dfc6434a3e971537bbe55171a67 v: v3

---
 [refs]                             | 2 +-
 trunk/sound/pci/hda/patch_analog.c | 8 ++++++++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index 0e3a04bac63a..04992a15880d 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: c35c9d5d3f03c203168e816f6f735d23f92fd6f1
+refs/heads/master: 7a2e38a555f2b1a20aaaf30f3d8ecad8faa97ea7
diff --git a/trunk/sound/pci/hda/patch_analog.c b/trunk/sound/pci/hda/patch_analog.c
index 262f5b5decf1..9cbd80cba122 100644
--- a/trunk/sound/pci/hda/patch_analog.c
+++ b/trunk/sound/pci/hda/patch_analog.c
@@ -1904,6 +1904,14 @@ static int patch_ad1981(struct hda_codec *codec)
 	case AD1981_THINKPAD:
 		spec->mixers[0] = ad1981_thinkpad_mixers;
 		spec->input_mux = &ad1981_thinkpad_capture_source;
+		/* set the upper-limit for mixer amp to 0dB for avoiding the
+		 * possible damage by overloading
+		 */
+		snd_hda_override_amp_caps(codec, 0x11, HDA_INPUT,
+					  (0x17 << AC_AMPCAP_OFFSET_SHIFT) |
+					  (0x17 << AC_AMPCAP_NUM_STEPS_SHIFT) |
+					  (0x05 << AC_AMPCAP_STEP_SIZE_SHIFT) |
+					  (1 << AC_AMPCAP_MUTE_SHIFT));
 		break;
 	case AD1981_TOSHIBA:
 		spec->mixers[0] = ad1981_hp_mixers;