ALSA: HDA: Realtek: Avoid unnecessary volume control index on Surround/Side

Similar to commit 7e59e097c09b82760bb0fe08b0fa2b704d76c3f4, this patch
avoids unnecessary volume control indices for more
Realtek auto-parsers, e g the ALC66x family, on the "Surround" and "Side"
controls.
These indices cause these volume controls to be ignored by PulseAudio and
vmaster and should be removed whenever possible.

Cc: [e-mail]
Reported-by: Jan Losinski <[e-mail]>
Signed-off-by: David Henningsson <[e-mail]>
Signed-off-by: Takashi Iwai <[e-mail]>

sound/pci/hda/patch_realtek.c

···
 				return err;
 		} else {
 			const char *name = pfx;
-			if (!name)
+			int index = i;
+			if (!name) {
 				name = chname[i];
-			err = __alc861_create_out_sw(codec, name, nid, i, 3);
+				index = 0;
+			}
+			err = __alc861_create_out_sw(codec, name, nid, index, 3);
 			if (err < 0)
 				return err;
 		}
···
 				return err;
 		} else {
 			const char *name = pfx;
-			if (!name)
+			int index = i;
+			if (!name) {
 				name = chname[i];
+				index = 0;
+			}
 			err = __add_pb_vol_ctrl(spec, ALC_CTL_WIDGET_VOL,
-						name, i,
+						name, index,
 					  HDA_COMPOSE_AMP_VAL(nid_v, 3, 0,
 							      HDA_OUTPUT));
 			if (err < 0)
 				return err;
 			err = __add_pb_sw_ctrl(spec, ALC_CTL_BIND_MUTE,
-					       name, i,
+					       name, index,
 					  HDA_COMPOSE_AMP_VAL(nid_s, 3, 2,
 							      HDA_INPUT));
 			if (err < 0)
···
 				return err;
 		} else {
 			const char *name = pfx;
-			if (!name)
+			int index = i;
+			if (!name) {
 				name = chname[i];
-			err = __alc662_add_vol_ctl(spec, name, nid, i, 3);
+				index = 0;
+			}
+			err = __alc662_add_vol_ctl(spec, name, nid, index, 3);
 			if (err < 0)
 				return err;
-			err = __alc662_add_sw_ctl(spec, name, mix, i, 3);
+			err = __alc662_add_sw_ctl(spec, name, mix, index, 3);
 			if (err < 0)
 				return err;
 		}