1 files changed, 8 insertions, 0 deletions

diff --git a/sound/pci/hda/patch_analog.c b/sound/pci/hda/patch_analog.c
index 262f5b5decf..9cbd80cba12 100644
--- a/sound/pci/hda/patch_analog.c
+++ b/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;