[ALSA] Change some timer ioctls due to confliction

Timer Midlevel,ALSA Core
Change values of some timer ioctls to avoid confliction with FIO* ioctls.
The protocol version is increased to indicate this change.

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

include/sound/asound.h

@@ -560,7 +560,7 @@ enum {
  *  Timer section - /dev/snd/timer
  */
 
-#define SNDRV_TIMER_VERSION		SNDRV_PROTOCOL_VERSION(2, 0, 3)
+#define SNDRV_TIMER_VERSION		SNDRV_PROTOCOL_VERSION(2, 0, 4)
 
 enum sndrv_timer_class {
 	SNDRV_TIMER_CLASS_NONE = -1,
@@ -673,10 +673,11 @@ enum {
 	SNDRV_TIMER_IOCTL_INFO = _IOR('T', 0x11, struct sndrv_timer_info),
 	SNDRV_TIMER_IOCTL_PARAMS = _IOW('T', 0x12, struct sndrv_timer_params),
 	SNDRV_TIMER_IOCTL_STATUS = _IOR('T', 0x14, struct sndrv_timer_status),
-	SNDRV_TIMER_IOCTL_START = _IO('T', 0x20),
-	SNDRV_TIMER_IOCTL_STOP = _IO('T', 0x21),
-	SNDRV_TIMER_IOCTL_CONTINUE = _IO('T', 0x22),
-	SNDRV_TIMER_IOCTL_PAUSE = _IO('T', 0x23),
+	/* The following four ioctls are changed since 1.0.9 due to confliction */
+	SNDRV_TIMER_IOCTL_START = _IO('T', 0xa0),
+	SNDRV_TIMER_IOCTL_STOP = _IO('T', 0xa1),
+	SNDRV_TIMER_IOCTL_CONTINUE = _IO('T', 0xa2),
+	SNDRV_TIMER_IOCTL_PAUSE = _IO('T', 0xa3),
 };
 
 struct sndrv_timer_read {

sound/core/timer.c

@@ -1690,6 +1690,13 @@ static int snd_timer_user_pause(struct file *file)
 	return (err = snd_timer_continue(tu->timeri)) < 0 ? err : 0;
 }
 
+enum {
+	SNDRV_TIMER_IOCTL_START_OLD = _IO('T', 0x20),
+	SNDRV_TIMER_IOCTL_STOP_OLD = _IO('T', 0x21),
+	SNDRV_TIMER_IOCTL_CONTINUE_OLD = _IO('T', 0x22),
+	SNDRV_TIMER_IOCTL_PAUSE_OLD = _IO('T', 0x23),
+};
+
 static long snd_timer_user_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
 	snd_timer_user_t *tu;
@@ -1734,12 +1741,16 @@ static long snd_timer_user_ioctl(struct file *file, unsigned int cmd, unsigned l
 	case SNDRV_TIMER_IOCTL_STATUS:
 		return snd_timer_user_status(file, argp);
 	case SNDRV_TIMER_IOCTL_START:
+	case SNDRV_TIMER_IOCTL_START_OLD:
 		return snd_timer_user_start(file);
 	case SNDRV_TIMER_IOCTL_STOP:
+	case SNDRV_TIMER_IOCTL_STOP_OLD:
 		return snd_timer_user_stop(file);
 	case SNDRV_TIMER_IOCTL_CONTINUE:
+	case SNDRV_TIMER_IOCTL_CONTINUE_OLD:
 		return snd_timer_user_continue(file);
 	case SNDRV_TIMER_IOCTL_PAUSE:
+	case SNDRV_TIMER_IOCTL_PAUSE_OLD:
 		return snd_timer_user_pause(file);
 	}
 	return -ENOTTY;

sound/core/timer_compat.c

@@ -106,9 +106,13 @@ static long snd_timer_user_ioctl_compat(struct file *file, unsigned int cmd, uns
 	case SNDRV_TIMER_IOCTL_SELECT:
 	case SNDRV_TIMER_IOCTL_PARAMS:
 	case SNDRV_TIMER_IOCTL_START:
+	case SNDRV_TIMER_IOCTL_START_OLD:
 	case SNDRV_TIMER_IOCTL_STOP:
+	case SNDRV_TIMER_IOCTL_STOP_OLD:
 	case SNDRV_TIMER_IOCTL_CONTINUE:
+	case SNDRV_TIMER_IOCTL_CONTINUE_OLD:
 	case SNDRV_TIMER_IOCTL_PAUSE:
+	case SNDRV_TIMER_IOCTL_PAUSE_OLD:
 	case SNDRV_TIMER_IOCTL_NEXT_DEVICE:
 		return snd_timer_user_ioctl(file, cmd, (unsigned long)argp);
 	case SNDRV_TIMER_IOCTL_INFO32: