snd_wavefront_mpu_id     output_mpu;  /* most-recently-used */
         snd_wavefront_mpu_id     input_mpu;   /* most-recently-used */
         unsigned int             mode[2];     /* MPU401_MODE_XXX */
-       snd_rawmidi_substream_t  *substream_output[2];
-       snd_rawmidi_substream_t  *substream_input[2];
+       struct snd_rawmidi_substream     *substream_output[2];
+       struct snd_rawmidi_substream     *substream_input[2];
        struct timer_list        timer;
         spinlock_t               open;
         spinlock_t               virtual;     /* protects isvirtual */
 #define        MPU_ACK         0xFE
 #define        UART_MODE_ON    0x3F
 
-extern snd_rawmidi_ops_t snd_wavefront_midi_output;
-extern snd_rawmidi_ops_t snd_wavefront_midi_input;
+extern struct snd_rawmidi_ops snd_wavefront_midi_output;
+extern struct snd_rawmidi_ops snd_wavefront_midi_input;
 
 extern void   snd_wavefront_midi_enable_virtual (snd_wavefront_card_t *);
 extern void   snd_wavefront_midi_disable_virtual (snd_wavefront_card_t *);
 extern int  snd_wavefront_cmd (snd_wavefront_t *, int, unsigned char *,
                               unsigned char *);
 
-extern int snd_wavefront_synth_ioctl   (snd_hwdep_t *, 
+extern int snd_wavefront_synth_ioctl   (struct snd_hwdep *, 
                                        struct file *,
                                        unsigned int cmd, 
                                        unsigned long arg);
-extern int  snd_wavefront_synth_open    (snd_hwdep_t *, struct file *);
-extern int  snd_wavefront_synth_release (snd_hwdep_t *, struct file *);
+extern int  snd_wavefront_synth_open    (struct snd_hwdep *, struct file *);
+extern int  snd_wavefront_synth_release (struct snd_hwdep *, struct file *);
 
 /* FX processor - see also yss225.[ch] */
 
 extern int  snd_wavefront_fx_start  (snd_wavefront_t *);
 extern int  snd_wavefront_fx_detect (snd_wavefront_t *);
-extern int  snd_wavefront_fx_ioctl  (snd_hwdep_t *, 
+extern int  snd_wavefront_fx_ioctl  (struct snd_hwdep *, 
                                     struct file *,
                                     unsigned int cmd, 
                                     unsigned long arg);
-extern int snd_wavefront_fx_open    (snd_hwdep_t *, struct file *);
-extern int snd_wavefront_fx_release (snd_hwdep_t *, struct file *);
+extern int snd_wavefront_fx_open    (struct snd_hwdep *, struct file *);
+extern int snd_wavefront_fx_release (struct snd_hwdep *, struct file *);
 
 /* prefix in all snd_printk() delivered messages */
 
 
 module_param_array(use_cs4232_midi, bool, NULL, 0444);
 MODULE_PARM_DESC(use_cs4232_midi, "Use CS4232 MPU-401 interface (inaccessibly located inside your computer)");
 
-static snd_card_t *snd_wavefront_legacy[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
+static struct snd_card *snd_wavefront_legacy[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
 
 #ifdef CONFIG_PNP
 
        return IRQ_HANDLED;
 }
 
-static snd_hwdep_t * __devinit
-snd_wavefront_new_synth (snd_card_t *card,
+static struct snd_hwdep * __devinit
+snd_wavefront_new_synth (struct snd_card *card,
                         int hw_dev,
                         snd_wavefront_card_t *acard)
 {
-       snd_hwdep_t *wavefront_synth;
+       struct snd_hwdep *wavefront_synth;
 
        if (snd_wavefront_detect (acard) < 0) {
                return NULL;
        return wavefront_synth;
 }
 
-static snd_hwdep_t * __devinit
-snd_wavefront_new_fx (snd_card_t *card,
+static struct snd_hwdep * __devinit
+snd_wavefront_new_fx (struct snd_card *card,
                      int hw_dev,
                      snd_wavefront_card_t *acard,
                      unsigned long port)
 
 {
-       snd_hwdep_t *fx_processor;
+       struct snd_hwdep *fx_processor;
 
        if (snd_wavefront_fx_start (&acard->wavefront)) {
                snd_printk ("cannot initialize YSS225 FX processor");
 static snd_wavefront_mpu_id internal_id = internal_mpu;
 static snd_wavefront_mpu_id external_id = external_mpu;
 
-static snd_rawmidi_t * __devinit
-snd_wavefront_new_midi (snd_card_t *card,
+static struct snd_rawmidi *__devinit
+snd_wavefront_new_midi (struct snd_card *card,
                        int midi_dev,
                        snd_wavefront_card_t *acard,
                        unsigned long port,
                        snd_wavefront_mpu_id mpu)
 
 {
-       snd_rawmidi_t *rmidi;
+       struct snd_rawmidi *rmidi;
        static int first = 1;
 
        if (first) {
 }
 
 static void
-snd_wavefront_free(snd_card_t *card)
+snd_wavefront_free(struct snd_card *card)
 {
        snd_wavefront_card_t *acard = (snd_wavefront_card_t *)card->private_data;
        
 snd_wavefront_probe (int dev, struct pnp_card_link *pcard,
                     const struct pnp_card_device_id *pid)
 {
-       snd_card_t *card;
+       struct snd_card *card;
        snd_wavefront_card_t *acard;
-       cs4231_t *chip;
-       snd_hwdep_t *wavefront_synth;
-       snd_rawmidi_t *ics2115_internal_rmidi = NULL;
-       snd_rawmidi_t *ics2115_external_rmidi = NULL;
-       snd_hwdep_t *fx_processor;
+       struct snd_cs4231 *chip;
+       struct snd_hwdep *wavefront_synth;
+       struct snd_rawmidi *ics2115_internal_rmidi = NULL;
+       struct snd_rawmidi *ics2115_external_rmidi = NULL;
+       struct snd_hwdep *fx_processor;
        int hw_dev = 0, midi_dev = 0, err;
 
 #ifdef CONFIG_PNP
        /* ---------- OPL3 synth --------- */
 
        if (fm_port[dev] > 0 && fm_port[dev] != SNDRV_AUTO_PORT) {
-               opl3_t *opl3;
+               struct snd_opl3 *opl3;
 
                if ((err = snd_opl3_create(card,
                                           fm_port[dev],
 
 static void __devexit snd_wavefront_pnp_remove(struct pnp_card_link * pcard)
 {
-       snd_card_t *card = (snd_card_t *) pnp_get_card_drvdata(pcard);
+       struct snd_card *card = (struct snd_card *) pnp_get_card_drvdata(pcard);
 
        snd_card_disconnect(card);
        snd_card_free_in_thread(card);
 
 }
 
 int
-snd_wavefront_fx_open (snd_hwdep_t *hw, struct file *file)
+snd_wavefront_fx_open (struct snd_hwdep *hw, struct file *file)
 
 {
        if (!try_module_get(hw->card->module))
 }
 
 int 
-snd_wavefront_fx_release (snd_hwdep_t *hw, struct file *file)
+snd_wavefront_fx_release (struct snd_hwdep *hw, struct file *file)
 
 {
        module_put(hw->card->module);
 }
 
 int
-snd_wavefront_fx_ioctl (snd_hwdep_t *sdev, struct file *file,
+snd_wavefront_fx_ioctl (struct snd_hwdep *sdev, struct file *file,
                        unsigned int cmd, unsigned long arg)
 
 {
-       snd_card_t *card;
+       struct snd_card *card;
        snd_wavefront_card_t *acard;
        snd_wavefront_t *dev;
        wavefront_fx_info r;
 
 }
 
 static snd_wavefront_midi_t *
-get_wavefront_midi (snd_rawmidi_substream_t *substream)
+get_wavefront_midi (struct snd_rawmidi_substream *substream)
 
 {
-       snd_card_t *card;
+       struct snd_card *card;
        snd_wavefront_card_t *acard;
 
        if (substream == NULL || substream->rmidi == NULL) 
        }
 }
 
-static int snd_wavefront_midi_input_open(snd_rawmidi_substream_t * substream)
+static int snd_wavefront_midi_input_open(struct snd_rawmidi_substream *substream)
 {
        unsigned long flags;
        snd_wavefront_midi_t *midi;
        return 0;
 }
 
-static int snd_wavefront_midi_output_open(snd_rawmidi_substream_t * substream)
+static int snd_wavefront_midi_output_open(struct snd_rawmidi_substream *substream)
 {
        unsigned long flags;
        snd_wavefront_midi_t *midi;
        return 0;
 }
 
-static int snd_wavefront_midi_input_close(snd_rawmidi_substream_t * substream)
+static int snd_wavefront_midi_input_close(struct snd_rawmidi_substream *substream)
 {
        unsigned long flags;
        snd_wavefront_midi_t *midi;
        return 0;
 }
 
-static int snd_wavefront_midi_output_close(snd_rawmidi_substream_t * substream)
+static int snd_wavefront_midi_output_close(struct snd_rawmidi_substream *substream)
 {
        unsigned long flags;
        snd_wavefront_midi_t *midi;
        return 0;
 }
 
-static void snd_wavefront_midi_input_trigger(snd_rawmidi_substream_t * substream, int up)
+static void snd_wavefront_midi_input_trigger(struct snd_rawmidi_substream *substream, int up)
 {
        unsigned long flags;
        snd_wavefront_midi_t *midi;
        snd_wavefront_midi_output_write(card);
 }
 
-static void snd_wavefront_midi_output_trigger(snd_rawmidi_substream_t * substream, int up)
+static void snd_wavefront_midi_output_trigger(struct snd_rawmidi_substream *substream, int up)
 {
        unsigned long flags;
        snd_wavefront_midi_t *midi;
 {
        unsigned long flags;
        snd_wavefront_midi_t *midi;
-       static snd_rawmidi_substream_t *substream = NULL;
+       static struct snd_rawmidi_substream *substream = NULL;
        static int mpu = external_mpu; 
        int max = 128;
        unsigned char byte;
        return 0;
 }
 
-snd_rawmidi_ops_t snd_wavefront_midi_output =
+struct snd_rawmidi_ops snd_wavefront_midi_output =
 {
        .open =         snd_wavefront_midi_output_open,
        .close =        snd_wavefront_midi_output_close,
        .trigger =      snd_wavefront_midi_output_trigger,
 };
 
-snd_rawmidi_ops_t snd_wavefront_midi_input =
+struct snd_rawmidi_ops snd_wavefront_midi_input =
 {
        .open =         snd_wavefront_midi_input_open,
        .close =        snd_wavefront_midi_input_close,
 
 static int wavefront_delete_sample (snd_wavefront_t *, int sampnum);
 static int wavefront_find_free_sample (snd_wavefront_t *);
 
-typedef struct {
+struct wavefront_command {
        int cmd;
        char *action;
        unsigned int read_cnt;
        unsigned int write_cnt;
        int need_ack;
-} wavefront_command;
+};
 
 static struct {
        int errno;
 
 #define NEEDS_ACK 1
 
-static wavefront_command wavefront_commands[] = {
+static struct wavefront_command wavefront_commands[] = {
        { WFC_SET_SYNTHVOL, "set synthesizer volume", 0, 1, NEEDS_ACK },
        { WFC_GET_SYNTHVOL, "get synthesizer volume", 1, 0, 0},
        { WFC_SET_NVOICES, "set number of voices", 0, 1, NEEDS_ACK },
        return "Unknown WaveFront error";
 }
 
-static wavefront_command *
+static struct wavefront_command *
 wavefront_get_command (int cmd) 
 
 {
                }
        }
 
-       return (wavefront_command *) 0;
+       return NULL;
 }
 
 static inline int
        int ack;
        unsigned int i;
        int c;
-       wavefront_command *wfcmd;
+       struct wavefront_command *wfcmd;
 
-       if ((wfcmd = wavefront_get_command (cmd)) == (wavefront_command *) 0) {
+       if ((wfcmd = wavefront_get_command (cmd)) == NULL) {
                snd_printk ("command 0x%x not supported.\n",
                        cmd);
                return 1;
 }
 
 int 
-snd_wavefront_synth_open (snd_hwdep_t *hw, struct file *file)
+snd_wavefront_synth_open (struct snd_hwdep *hw, struct file *file)
 
 {
        if (!try_module_get(hw->card->module))
 }
 
 int 
-snd_wavefront_synth_release (snd_hwdep_t *hw, struct file *file)
+snd_wavefront_synth_release (struct snd_hwdep *hw, struct file *file)
 
 {
        module_put(hw->card->module);
 }
 
 int
-snd_wavefront_synth_ioctl (snd_hwdep_t *hw, struct file *file,
+snd_wavefront_synth_ioctl (struct snd_hwdep *hw, struct file *file,
                           unsigned int cmd, unsigned long arg)
 
 {
-       snd_card_t *card;
+       struct snd_card *card;
        snd_wavefront_t *dev;
        snd_wavefront_card_t *acard;
        wavefront_control *wc;
        void __user *argp = (void __user *)arg;
        int err;
 
-       card = (snd_card_t *) hw->card;
+       card = (struct snd_card *) hw->card;
 
        snd_assert(card != NULL, return -ENODEV);