2225     return 0;

  2226 }

  2227 

  2228 /*****************************************************************************/

  2229 

  2230 /** Starts a VoE read operation without sending a sync message first.

  2231  */

  2232 int ec_cdev_ioctl_voe_read_nosync(

  2233         ec_master_t *master, /**< EtherCAT master. */

  2234         unsigned long arg, /**< ioctl() argument. */

  2235         ec_cdev_priv_t *priv /**< Private data structure of file handle. */

  2236         )

  2237 {

  2238     ec_ioctl_voe_t data;

  2239     ec_slave_config_t *sc;

  2240     ec_voe_handler_t *voe;

  2241 

  2242 	if (unlikely(!priv->requested))

  2243         return -EPERM;

  2244 

  2245     if (copy_from_user(&data, (void __user *) arg, sizeof(data)))

  2246         return -EFAULT;

  2247 

  2248     if (down_interruptible(&master->master_sem))

  2249         return -EINTR;

  2250 

  2251     if (!(sc = ec_master_get_config(master, data.config_index))) {

  2252         up(&master->master_sem);

  2253         return -ENOENT;

  2254     }

  2255 

  2256     if (!(voe = ec_slave_config_find_voe_handler(sc, data.voe_index))) {

  2257         up(&master->master_sem);

  2258         return -ENOENT;

  2259     }

  2260 

  2261     up(&master->master_sem);

  2262 

  2263     ecrt_voe_handler_read_nosync(voe);

  2601         case EC_IOCTL_VOE_READ_NOSYNC:

  2602             if (!(filp->f_mode & FMODE_WRITE))

  2603 				return -EPERM;

  2604 			return ec_cdev_ioctl_voe_read_nosync(master, arg, priv);