_SIOWR            101 include/linux/soundcard.h #define	_SIOWR		_IOWR
_SIOWR            121 include/linux/soundcard.h #define	_SIOWR(x,y,t)	((int)(SIOC_INOUT|((sizeof(t)&SIOCPARM_MASK)<<16)|(x<<8)|y))