sound: Remove unnecessary casts of private_data

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/ice1712/pontis.c b/sound/pci/ice1712/pontis.c
index 6bc3f91..cdb873f 100644
--- a/sound/pci/ice1712/pontis.c
+++ b/sound/pci/ice1712/pontis.c
@@ -638,7 +638,7 @@
  */
 static void wm_proc_regs_write(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
 {
-	struct snd_ice1712 *ice = (struct snd_ice1712 *)entry->private_data;
+	struct snd_ice1712 *ice = entry->private_data;
 	char line[64];
 	unsigned int reg, val;
 	mutex_lock(&ice->gpio_mutex);
@@ -653,7 +653,7 @@
 
 static void wm_proc_regs_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
 {
-	struct snd_ice1712 *ice = (struct snd_ice1712 *)entry->private_data;
+	struct snd_ice1712 *ice = entry->private_data;
 	int reg, val;
 
 	mutex_lock(&ice->gpio_mutex);
@@ -676,7 +676,7 @@
 
 static void cs_proc_regs_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
 {
-	struct snd_ice1712 *ice = (struct snd_ice1712 *)entry->private_data;
+	struct snd_ice1712 *ice = entry->private_data;
 	int reg, val;
 
 	mutex_lock(&ice->gpio_mutex);