1752 			  unsigned int cmd, void __user *arg)  in dispatch_ioctl()  argument
1760 	if (_IOC_TYPE(cmd) != '#' ||  in dispatch_ioctl()
1761 	    _IOC_NR(cmd) >= ARRAY_SIZE(ioctl_handlers) ||  in dispatch_ioctl()
1762 	    _IOC_SIZE(cmd) > sizeof(buffer))  in dispatch_ioctl()
1767 	if (_IOC_DIR(cmd) & _IOC_WRITE)  in dispatch_ioctl()
1768 		if (copy_from_user(&buffer, arg, _IOC_SIZE(cmd)))  in dispatch_ioctl()
1771 	ret = ioctl_handlers[_IOC_NR(cmd)](client, &buffer);  in dispatch_ioctl()
1775 	if (_IOC_DIR(cmd) & _IOC_READ)  in dispatch_ioctl()
1776 		if (copy_to_user(arg, &buffer, _IOC_SIZE(cmd)))  in dispatch_ioctl()
1783 			       unsigned int cmd, unsigned long arg)  in fw_device_op_ioctl()  argument
1785 	return dispatch_ioctl(file->private_data, cmd, (void __user *)arg);  in fw_device_op_ioctl()