Vinod Koul wrote:
+#define SNDRV_COMPRESS_GET_CAPS _IOWR('C', 0x00, struct snd_compr_caps *) +#define SNDRV_COMPRESS_GET_CODEC_CAPS _IOWR('C', 0x01, struct snd_compr_codec_caps *) +#define SNDRV_COMPRESS_SET_PARAMS _IOW('C', 0x02, struct snd_compr_params *) +#define SNDRV_COMPRESS_GET_PARAMS _IOR('C', 0x03, struct snd_compr_params *) +#define SNDRV_COMPRESS_TSTAMP _IOR('C', 0x10, struct snd_compr_tstamp *) +#define SNDRV_COMPRESS_AVAIL _IOR('C', 0x11, struct snd_compr_avail *)
The type whose size is made part of the ioctl number is supposed to be the actual structure, not a pointer to it.
+#define SNDRV_COMPRESS_PAUSE _IO('C', 0x20) +#define SNDRV_COMPRESS_RESUME _IO('C', 0x21) +#define SNDRV_COMPRESS_START _IO('C', 0x22) +#define SNDRV_COMPRESS_STOP _IO('C', 0x23) +#define SNDRV_COMPRESS_DRAIN _IO('C', 0x24)
Please update Documentation/ioctl/ioctl-number.txt. (This also makes it easier to pick codes without conflicts.)
Regards, Clemens