diff --git a/[refs] b/[refs]
index 391567cd6510..09bed7dd6eb9 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: ffd0e56c606836581da5df742a43ce8015ca7475
+refs/heads/master: 4dc1f87f079d5c6b01284d08b28eff2c4fbd15c4
diff --git a/trunk/sound/pci/hda/patch_analog.c b/trunk/sound/pci/hda/patch_analog.c
index 38ad3f7b040f..9bcd8ab5a27f 100644
--- a/trunk/sound/pci/hda/patch_analog.c
+++ b/trunk/sound/pci/hda/patch_analog.c
@@ -3977,6 +3977,14 @@ static int patch_ad1884a(struct hda_codec *codec)
 		spec->input_mux = &ad1884a_laptop_capture_source;
 		codec->patch_ops.unsol_event = ad1884a_hp_unsol_event;
 		codec->patch_ops.init = ad1884a_hp_init;
+		/* set the upper-limit for mixer amp to 0dB for avoiding the
+		 * possible damage by overloading
+		 */
+		snd_hda_override_amp_caps(codec, 0x20, 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 AD1884A_MOBILE:
 		spec->mixers[0] = ad1884a_mobile_mixers;