ALSA: hda - Use macros to check array overflow

Use macro to add mixer and verb elements to check the possible
array overflow.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 53 insertions, 60 deletions

diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index d300fc49f7e1..51479fba960e 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -716,6 +716,22 @@ static int alc_eapd_ctrl_put(struct snd_kcontrol *kcontrol,
 #endif   /* CONFIG_SND_DEBUG */
 
 /*
+ */
+static void add_mixer(struct alc_spec *spec, struct snd_kcontrol_new *mix)
+{
+        if (snd_BUG_ON(spec->num_mixers >= ARRAY_SIZE(spec->mixers)))
+                return;
+        spec->mixers[spec->num_mixers++] = mix;
+}
+
+static void add_verb(struct alc_spec *spec, const struct hda_verb *verb)
+{
+        if (snd_BUG_ON(spec->num_init_verbs >= ARRAY_SIZE(spec->init_verbs)))
+                return;
+        spec->init_verbs[spec->num_init_verbs++] = verb;
+}
+
+/*
  * set up from the preset table
  */
 static void setup_preset(struct alc_spec *spec,
@@ -724,11 +740,10 @@ static void setup_preset(struct alc_spec *spec,
         int i;
 
         for (i = 0; i < ARRAY_SIZE(preset->mixers) && preset->mixers[i]; i++)
-                spec->mixers[spec->num_mixers++] = preset->mixers[i];
+                add_mixer(spec, preset->mixers[i]);
         for (i = 0; i < ARRAY_SIZE(preset->init_verbs) && preset->init_verbs[i];
              i++)
-                spec->init_verbs[spec->num_init_verbs++] =
-                        preset->init_verbs[i];
+                add_verb(spec, preset->init_verbs[i]);
 
         spec->channel_mode = preset->channel_mode;
         spec->num_channel_mode = preset->num_channel_mode;
@@ -1244,7 +1259,6 @@ static struct snd_kcontrol_new alc880_capture_alt_mixer[] = {
                 .get = alc_mux_enum_get,
                 .put = alc_mux_enum_put,
         },
-        { } /* end */
 };
 
 
@@ -3893,9 +3907,9 @@ static int alc880_parse_auto_config(struct hda_codec *codec)
                 spec->dig_in_nid = ALC880_DIGIN_NID;
 
         if (spec->kctls.list)
-                spec->mixers[spec->num_mixers++] = spec->kctls.list;
+                add_mixer(spec, spec->kctls.list);
 
-        spec->init_verbs[spec->num_init_verbs++] = alc880_volume_init_verbs;
+        add_verb(spec, alc880_volume_init_verbs);
 
         spec->num_mux_defs = 1;
         spec->input_mux = &spec->private_imux;
@@ -3974,14 +3988,11 @@ static int patch_alc880(struct hda_codec *codec)
                 if (wcap != AC_WID_AUD_IN) {
                         spec->adc_nids = alc880_adc_nids_alt;
                         spec->num_adc_nids = ARRAY_SIZE(alc880_adc_nids_alt);
-                        spec->mixers[spec->num_mixers] =
-                                alc880_capture_alt_mixer;
-                        spec->num_mixers++;
+                        add_mixer(spec, alc880_capture_alt_mixer);
                 } else {
                         spec->adc_nids = alc880_adc_nids;
                         spec->num_adc_nids = ARRAY_SIZE(alc880_adc_nids);
-                        spec->mixers[spec->num_mixers] = alc880_capture_mixer;
-                        spec->num_mixers++;
+                        add_mixer(spec, alc880_capture_mixer);
                 }
         }
 
@@ -5298,9 +5309,9 @@ static int alc260_parse_auto_config(struct hda_codec *codec)
         if (spec->autocfg.dig_out_pin)
                 spec->multiout.dig_out_nid = ALC260_DIGOUT_NID;
         if (spec->kctls.list)
-                spec->mixers[spec->num_mixers++] = spec->kctls.list;
+                add_mixer(spec, spec->kctls.list);
 
-        spec->init_verbs[spec->num_init_verbs++] = alc260_volume_init_verbs;
+        add_verb(spec, alc260_volume_init_verbs);
 
         spec->num_mux_defs = 1;
         spec->input_mux = &spec->private_imux;
@@ -5311,13 +5322,12 @@ static int alc260_parse_auto_config(struct hda_codec *codec)
         if (wcap != AC_WID_AUD_IN || spec->input_mux->num_items == 1) {
                 spec->adc_nids = alc260_adc_nids_alt;
                 spec->num_adc_nids = ARRAY_SIZE(alc260_adc_nids_alt);
-                spec->mixers[spec->num_mixers] = alc260_capture_alt_mixer;
+                add_mixer(spec, alc260_capture_alt_mixer);
         } else {
                 spec->adc_nids = alc260_adc_nids;
                 spec->num_adc_nids = ARRAY_SIZE(alc260_adc_nids);
-                spec->mixers[spec->num_mixers] = alc260_capture_mixer;
+                add_mixer(spec, alc260_capture_mixer);
         }
-        spec->num_mixers++;
 
         store_pin_configs(codec);
         return 1;
@@ -6834,15 +6844,12 @@ static int patch_alc882(struct hda_codec *codec)
                         spec->adc_nids = alc882_adc_nids_alt;
                         spec->num_adc_nids = ARRAY_SIZE(alc882_adc_nids_alt);
                         spec->capsrc_nids = alc882_capsrc_nids_alt;
-                        spec->mixers[spec->num_mixers] =
-                                alc882_capture_alt_mixer;
-                        spec->num_mixers++;
+                        add_mixer(spec, alc882_capture_alt_mixer);
                 } else {
                         spec->adc_nids = alc882_adc_nids;
                         spec->num_adc_nids = ARRAY_SIZE(alc882_adc_nids);
                         spec->capsrc_nids = alc882_capsrc_nids;
-                        spec->mixers[spec->num_mixers] = alc882_capture_mixer;
-                        spec->num_mixers++;
+                        add_mixer(spec, alc882_capture_mixer);
                 }
         }
 
@@ -8854,8 +8861,7 @@ static int alc883_parse_auto_config(struct hda_codec *codec)
 
         /* hack - override the init verbs */
         spec->init_verbs[0] = alc883_auto_init_verbs;
-        spec->mixers[spec->num_mixers] = alc883_capture_mixer;
-        spec->num_mixers++;
+        add_mixer(spec, alc883_capture_mixer);
 
         return 1; /* config found */
 }
@@ -10373,9 +10379,9 @@ static int alc262_parse_auto_config(struct hda_codec *codec)
                 spec->dig_in_nid = ALC262_DIGIN_NID;
 
         if (spec->kctls.list)
-                spec->mixers[spec->num_mixers++] = spec->kctls.list;
+                add_mixer(spec, spec->kctls.list);
 
-        spec->init_verbs[spec->num_init_verbs++] = alc262_volume_init_verbs;
+        add_verb(spec, alc262_volume_init_verbs);
         spec->num_mux_defs = 1;
         spec->input_mux = &spec->private_imux;
 
@@ -10752,15 +10758,12 @@ static int patch_alc262(struct hda_codec *codec)
                         spec->adc_nids = alc262_adc_nids_alt;
                         spec->num_adc_nids = ARRAY_SIZE(alc262_adc_nids_alt);
                         spec->capsrc_nids = alc262_capsrc_nids_alt;
-                        spec->mixers[spec->num_mixers] =
-                                alc262_capture_alt_mixer;
-                        spec->num_mixers++;
+                        add_mixer(spec, alc262_capture_alt_mixer);
                 } else {
                         spec->adc_nids = alc262_adc_nids;
                         spec->num_adc_nids = ARRAY_SIZE(alc262_adc_nids);
                         spec->capsrc_nids = alc262_capsrc_nids;
-                        spec->mixers[spec->num_mixers] = alc262_capture_mixer;
-                        spec->num_mixers++;
+                        add_mixer(spec, alc262_capture_mixer);
                 }
         }
 
@@ -11505,12 +11508,12 @@ static int alc268_parse_auto_config(struct hda_codec *codec)
                 spec->multiout.dig_out_nid = ALC268_DIGOUT_NID;
 
         if (spec->kctls.list)
-                spec->mixers[spec->num_mixers++] = spec->kctls.list;
+                add_mixer(spec, spec->kctls.list);
 
         if (spec->autocfg.speaker_pins[0] != 0x1d)
-                spec->mixers[spec->num_mixers++] = alc268_beep_mixer;
+                add_mixer(spec, alc268_beep_mixer);
 
-        spec->init_verbs[spec->num_init_verbs++] = alc268_volume_init_verbs;
+        add_verb(spec, alc268_volume_init_verbs);
         spec->num_mux_defs = 1;
         spec->input_mux = &spec->private_imux;
 
@@ -11779,15 +11782,11 @@ static int patch_alc268(struct hda_codec *codec)
                 if (wcap != AC_WID_AUD_IN || spec->input_mux->num_items == 1) {
                         spec->adc_nids = alc268_adc_nids_alt;
                         spec->num_adc_nids = ARRAY_SIZE(alc268_adc_nids_alt);
-                        spec->mixers[spec->num_mixers] =
-                                        alc268_capture_alt_mixer;
-                        spec->num_mixers++;
+                        add_mixer(spec, alc268_capture_alt_mixer);
                 } else {
                         spec->adc_nids = alc268_adc_nids;
                         spec->num_adc_nids = ARRAY_SIZE(alc268_adc_nids);
-                        spec->mixers[spec->num_mixers] =
-                                alc268_capture_mixer;
-                        spec->num_mixers++;
+                        add_mixer(spec, alc268_capture_mixer);
                 }
                 spec->capsrc_nids = alc268_capsrc_nids;
                 /* set default input source */
@@ -12296,16 +12295,16 @@ static int alc269_parse_auto_config(struct hda_codec *codec)
                 spec->multiout.dig_out_nid = ALC269_DIGOUT_NID;
 
         if (spec->kctls.list)
-                spec->mixers[spec->num_mixers++] = spec->kctls.list;
+                add_mixer(spec, spec->kctls.list);
 
         /* create a beep mixer control if the pin 0x1d isn't assigned */
         for (i = 0; i < ARRAY_SIZE(spec->autocfg.input_pins); i++)
                 if (spec->autocfg.input_pins[i] == 0x1d)
                         break;
         if (i >= ARRAY_SIZE(spec->autocfg.input_pins))
-                spec->mixers[spec->num_mixers++] = alc269_beep_mixer;
+                add_mixer(spec, alc269_beep_mixer);
 
-        spec->init_verbs[spec->num_init_verbs++] = alc269_init_verbs;
+        add_verb(spec, alc269_init_verbs);
         spec->num_mux_defs = 1;
         spec->input_mux = &spec->private_imux;
         /* set default input source */
@@ -12317,8 +12316,7 @@ static int alc269_parse_auto_config(struct hda_codec *codec)
         if (err < 0)
                 return err;
 
-        spec->mixers[spec->num_mixers] = alc269_capture_mixer;
-        spec->num_mixers++;
+        add_mixer(spec, alc269_capture_mixer);
 
         store_pin_configs(codec);
         return 1;
@@ -13395,17 +13393,16 @@ static int alc861_parse_auto_config(struct hda_codec *codec)
                 spec->multiout.dig_out_nid = ALC861_DIGOUT_NID;
 
         if (spec->kctls.list)
-                spec->mixers[spec->num_mixers++] = spec->kctls.list;
+                add_mixer(spec, spec->kctls.list);
 
-        spec->init_verbs[spec->num_init_verbs++] = alc861_auto_init_verbs;
+        add_verb(spec, alc861_auto_init_verbs);
 
         spec->num_mux_defs = 1;
         spec->input_mux = &spec->private_imux;
 
         spec->adc_nids = alc861_adc_nids;
         spec->num_adc_nids = ARRAY_SIZE(alc861_adc_nids);
-        spec->mixers[spec->num_mixers] = alc861_capture_mixer;
-        spec->num_mixers++;
+        add_mixer(spec, alc861_capture_mixer);
 
         store_pin_configs(codec);
         return 1;
@@ -14507,10 +14504,9 @@ static int alc861vd_parse_auto_config(struct hda_codec *codec)
                 spec->multiout.dig_out_nid = ALC861VD_DIGOUT_NID;
 
         if (spec->kctls.list)
-                spec->mixers[spec->num_mixers++] = spec->kctls.list;
+                add_mixer(spec, spec->kctls.list);
 
-        spec->init_verbs[spec->num_init_verbs++]
-                = alc861vd_volume_init_verbs;
+        add_verb(spec, alc861vd_volume_init_verbs);
 
         spec->num_mux_defs = 1;
         spec->input_mux = &spec->private_imux;
@@ -14577,7 +14573,7 @@ static int patch_alc861vd(struct hda_codec *codec)
                 spec->stream_name_analog = "ALC660-VD Analog";
                 spec->stream_name_digital = "ALC660-VD Digital";
                 /* always turn on EAPD */
-                spec->init_verbs[spec->num_init_verbs++] = alc660vd_eapd_verbs;
+                add_verb(spec, alc660vd_eapd_verbs);
         } else {
                 spec->stream_name_analog = "ALC861VD Analog";
                 spec->stream_name_digital = "ALC861VD Digital";
@@ -14593,8 +14589,7 @@ static int patch_alc861vd(struct hda_codec *codec)
         spec->num_adc_nids = ARRAY_SIZE(alc861vd_adc_nids);
         spec->capsrc_nids = alc861vd_capsrc_nids;
 
-        spec->mixers[spec->num_mixers] = alc861vd_capture_mixer;
-        spec->num_mixers++;
+        add_mixer(spec, alc861vd_capture_mixer);
 
         spec->vmaster_nid = 0x02;
 
@@ -16335,22 +16330,20 @@ static int alc662_parse_auto_config(struct hda_codec *codec)
                 spec->multiout.dig_out_nid = ALC880_DIGOUT_NID;
 
         if (spec->kctls.list)
-                spec->mixers[spec->num_mixers++] = spec->kctls.list;
+                add_mixer(spec, spec->kctls.list);
 
         spec->num_mux_defs = 1;
         spec->input_mux = &spec->private_imux;
 
-        spec->init_verbs[spec->num_init_verbs++] = alc662_auto_init_verbs;
+        add_verb(spec, alc662_auto_init_verbs);
         if (codec->vendor_id == 0x10ec0663)
-                spec->init_verbs[spec->num_init_verbs++] =
-                        alc663_auto_init_verbs;
+                add_verb(spec, alc663_auto_init_verbs);
 
         err = alc_auto_add_mic_boost(codec);
         if (err < 0)
                 return err;
 
-        spec->mixers[spec->num_mixers] = alc662_capture_mixer;
-        spec->num_mixers++;
+        add_mixer(spec, alc662_capture_mixer);
 
         store_pin_configs(codec);
         return 1;