[ALSA] hda-codec - Fix possible array overflow

dac_nids arrays in each codec support code may have up to 5 items
when assigned from the auto-configurator.  Some codec codes have
less numbers than the possible max.  This patch defines the constant
and fixes the array definitions.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NJaroslav Kysela <perex@perex.cz>

sound/pci/hda/hda_local.h

@@ -310,16 +310,17 @@ enum {
 
 extern const char *auto_pin_cfg_labels[AUTO_PIN_LAST];
 
+#define AUTO_CFG_MAX_OUTS	5
+
 struct auto_pin_cfg {
 	int line_outs;
-	hda_nid_t line_out_pins[5]; /* sorted in the order of
-				     * Front/Surr/CLFE/Side
-				     */
+	/* sorted in the order of Front/Surr/CLFE/Side */
+	hda_nid_t line_out_pins[AUTO_CFG_MAX_OUTS];
 	int speaker_outs;
-	hda_nid_t speaker_pins[5];
+	hda_nid_t speaker_pins[AUTO_CFG_MAX_OUTS];
 	int hp_outs;
 	int line_out_type;	/* AUTO_PIN_XXX_OUT */
-	hda_nid_t hp_pins[5];
+	hda_nid_t hp_pins[AUTO_CFG_MAX_OUTS];
 	hda_nid_t input_pins[AUTO_PIN_LAST];
 	hda_nid_t dig_out_pin;
 	hda_nid_t dig_in_pin;

sound/pci/hda/patch_analog.c

@@ -72,7 +72,7 @@ struct ad198x_spec {
 	unsigned int num_kctl_alloc, num_kctl_used;
 	struct snd_kcontrol_new *kctl_alloc;
 	struct hda_input_mux private_imux;
-	hda_nid_t private_dac_nids[4];
+	hda_nid_t private_dac_nids[AUTO_CFG_MAX_OUTS];
 
 	unsigned int jack_present :1;
 

sound/pci/hda/patch_cmedia.c

@@ -50,7 +50,7 @@ struct cmi_spec {
 
 	/* playback */
 	struct hda_multi_out multiout;
-	hda_nid_t dac_nids[4];		/* NID for each DAC */
+	hda_nid_t dac_nids[AUTO_CFG_MAX_OUTS];	/* NID for each DAC */
 	int num_dacs;
 
 	/* capture */
@@ -73,7 +73,6 @@ struct cmi_spec {
 	unsigned int pin_def_confs;
 
 	/* multichannel pins */
-	hda_nid_t multich_pin[4];	/* max 8-channel */
 	struct hda_verb multi_init[9];	/* 2 verbs for each pin + terminator */
 };
 

sound/pci/hda/patch_conexant.c

@@ -85,7 +85,7 @@ struct conexant_spec {
 	unsigned int num_kctl_alloc, num_kctl_used;
 	struct snd_kcontrol_new *kctl_alloc;
 	struct hda_input_mux private_imux;
-	hda_nid_t private_dac_nids[4];
+	hda_nid_t private_dac_nids[AUTO_CFG_MAX_OUTS];
 
 };
 

sound/pci/hda/patch_realtek.c

@@ -238,7 +238,7 @@ struct alc_spec {
 	unsigned int num_kctl_alloc, num_kctl_used;
 	struct snd_kcontrol_new *kctl_alloc;
 	struct hda_input_mux private_imux;
-	hda_nid_t private_dac_nids[5];
+	hda_nid_t private_dac_nids[AUTO_CFG_MAX_OUTS];
 
 	/* hooks */
 	void (*init_hook)(struct hda_codec *codec);

sound/pci/hda/patch_via.c

@@ -114,7 +114,7 @@ struct via_spec {
 	unsigned int num_kctl_alloc, num_kctl_used;
 	struct snd_kcontrol_new *kctl_alloc;
 	struct hda_input_mux private_imux;
-	hda_nid_t private_dac_nids[4];	
+	hda_nid_t private_dac_nids[AUTO_CFG_MAX_OUTS];
 
 #ifdef CONFIG_SND_HDA_POWER_SAVE
 	struct hda_loopback_check loopback;