mpt_ioctl_command
static int mptctl_do_mpt_command(MPT_ADAPTER *iocp, struct mpt_ioctl_command karg, void __user *mfPtr);
struct mpt_ioctl_command __user *uarg = (void __user *) arg;
struct mpt_ioctl_command karg;
if (copy_from_user(&karg, uarg, sizeof(struct mpt_ioctl_command))) {
mptctl_do_mpt_command (MPT_ADAPTER *ioc, struct mpt_ioctl_command karg, void __user *mfPtr)
struct mpt_ioctl_command karg;
#define MPTCOMMAND _IOWR(MPT_MAGIC_NUMBER,20,struct mpt_ioctl_command)