1 files changed, 37 insertions, 5 deletions

diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 011644b7c2d1..8f93b97559a5 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -116,6 +116,8 @@ struct alc_spec {
         const hda_nid_t *capsrc_nids;
         hda_nid_t dig_in_nid;           /* digital-in NID; optional */
         hda_nid_t mixer_nid;            /* analog-mixer NID */
+        DECLARE_BITMAP(vol_ctls, 0x20 << 1);
+        DECLARE_BITMAP(sw_ctls, 0x20 << 1);
 
         /* capture setup for dynamic dual-adc switch */
         hda_nid_t cur_adc;
@@ -3006,14 +3008,32 @@ static int alc_auto_fill_dac_nids(struct hda_codec *codec)
         return 0;
 }
 
+static inline unsigned int get_ctl_pos(unsigned int data)
+{
+        hda_nid_t nid = get_amp_nid_(data);
+        unsigned int dir = get_amp_direction_(data);
+        return (nid << 1) | dir;
+}
+
+#define is_ctl_used(bits, data) \
+        test_bit(get_ctl_pos(data), bits)
+#define mark_ctl_usage(bits, data) \
+        set_bit(get_ctl_pos(data), bits)
+
 static int alc_auto_add_vol_ctl(struct hda_codec *codec,
                               const char *pfx, int cidx,
                               hda_nid_t nid, unsigned int chs)
 {
+        struct alc_spec *spec = codec->spec;
+        unsigned int val;
         if (!nid)
                 return 0;
+        val = HDA_COMPOSE_AMP_VAL(nid, chs, 0, HDA_OUTPUT);
+        if (is_ctl_used(spec->vol_ctls, val) && chs != 2) /* exclude LFE */
+                return 0;
+        mark_ctl_usage(spec->vol_ctls, val);
         return __add_pb_vol_ctrl(codec->spec, ALC_CTL_WIDGET_VOL, pfx, cidx,
-                                 HDA_COMPOSE_AMP_VAL(nid, chs, 0, HDA_OUTPUT));
+                                 val);
 }
 
 #define alc_auto_add_stereo_vol(codec, pfx, cidx, nid)  \
@@ -3026,6 +3046,7 @@ static int alc_auto_add_sw_ctl(struct hda_codec *codec,
                              const char *pfx, int cidx,
                              hda_nid_t nid, unsigned int chs)
 {
+        struct alc_spec *spec = codec->spec;
         int wid_type;
         int type;
         unsigned long val;
@@ -3042,6 +3063,9 @@ static int alc_auto_add_sw_ctl(struct hda_codec *codec,
                 type = ALC_CTL_BIND_MUTE;
                 val = HDA_COMPOSE_AMP_VAL(nid, chs, 2, HDA_INPUT);
         }
+        if (is_ctl_used(spec->sw_ctls, val) && chs != 2) /* exclude LFE */
+                return 0;
+        mark_ctl_usage(spec->sw_ctls, val);
         return __add_pb_sw_ctrl(codec->spec, type, pfx, cidx, val);
 }
 
@@ -3136,12 +3160,16 @@ static int alc_auto_create_extra_out(struct hda_codec *codec, hda_nid_t pin,
         int err;
 
         if (!dac) {
+                unsigned int val;
                 /* the corresponding DAC is already occupied */
                 if (!(get_wcaps(codec, pin) & AC_WCAP_OUT_AMP))
                         return 0; /* no way */
                 /* create a switch only */
-                return add_pb_sw_ctrl(spec, ALC_CTL_WIDGET_MUTE, pfx,
-                                   HDA_COMPOSE_AMP_VAL(pin, 3, 0, HDA_OUTPUT));
+                val = HDA_COMPOSE_AMP_VAL(pin, 3, 0, HDA_OUTPUT);
+                if (is_ctl_used(spec->sw_ctls, val))
+                        return 0; /* already created */
+                mark_ctl_usage(spec->sw_ctls, val);
+                return add_pb_sw_ctrl(spec, ALC_CTL_WIDGET_MUTE, pfx, val);
         }
 
         sw = alc_look_for_out_mute_nid(codec, pin, dac);
@@ -3186,8 +3214,12 @@ static int alc_auto_create_extra_outs(struct hda_codec *codec, int num_pins,
         if (!num_pins || !pins[0])
                 return 0;
 
-        if (num_pins == 1)
-                return alc_auto_create_extra_out(codec, *pins, *dacs, pfx);
+        if (num_pins == 1) {
+                hda_nid_t dac = *dacs;
+                if (!dac)
+                        dac = spec->multiout.dac_nids[0];
+                return alc_auto_create_extra_out(codec, *pins, dac, pfx);
+        }
 
         if (dacs[num_pins - 1]) {
                 /* OK, we have a multi-output system with individual volumes */