Merge branch 'less_features' into 'master'

Remove unnecessary feature gates

See merge request redox-os/drivers!234

acpid/src/main.rs

@@ -1,5 +1,3 @@
-#![feature(if_let_guard, int_roundings)]
-
 use std::convert::TryFrom;
 use std::fs::File;
 use std::mem;

audio/ihdad/src/main.rs

@@ -1,6 +1,3 @@
-//#![deny(warnings)]
-#![feature(int_roundings)]
-
 extern crate bitflags;
 extern crate event;
 extern crate spin;

common/src/lib.rs

@@ -2,7 +2,6 @@
 //!
 //! This includes direct memory access via [dma], and Scatter-Gather List support via [sgl].  It also
 //! provides various memory management structures for use with drivers, and some logging support.
-#![feature(int_roundings)]
 #![warn(missing_docs)]
 
 use libredox::call::MmapArgs;

graphics/fbbootlogd/src/main.rs

@@ -9,8 +9,6 @@
 //!   to get new input. Fbbootlogd does all blocking operations in background threads such that the
 //!   main thread will always keep accepting new input and writing it to the framebuffer.
 
-#![feature(io_error_more)]
-
 use libredox::errno::EOPNOTSUPP;
 use redox_scheme::{RequestKind, Response, SignalBehavior, Socket};
 

graphics/fbcond/src/main.rs

@@ -1,5 +1,3 @@
-#![feature(io_error_more)]
-
 use event::EventQueue;
 use libredox::errno::{EAGAIN, EINTR, EOPNOTSUPP, ESTALE};
 use orbclient::Event;

graphics/virtio-gpud/src/main.rs

@@ -20,8 +20,6 @@
 // cc https://docs.mesa3d.org/drivers/venus.html
 // cc https://docs.mesa3d.org/drivers/virgl.html
 
-#![feature(int_roundings)]
-
 use std::os::fd::AsRawFd;
 use std::sync::atomic::{AtomicU32, Ordering};
 

input/ps2d/src/main.rs

@@ -1,5 +1,3 @@
-#![feature(asm_const)]
-
 #[macro_use]
 extern crate bitflags;
 extern crate orbclient;

net/rtl8139d/src/main.rs

@@ -1,5 +1,3 @@
-#![feature(int_roundings)]
-
 use std::convert::TryInto;
 use std::fs::File;
 use std::io::{Read, Write};

storage/ahcid/src/main.rs

@@ -1,5 +1,4 @@
 #![cfg_attr(target_arch = "aarch64", feature(stdsimd))] // Required for yield instruction
-#![feature(int_roundings)]
 
 extern crate byteorder;
 extern crate syscall;

storage/nvmed/src/main.rs

@@ -1,6 +1,5 @@
 #![cfg_attr(target_arch = "aarch64", feature(stdarch_arm_hints))] // Required for yield instruction
 #![cfg_attr(target_arch = "riscv64", feature(riscv_ext_intrinsics))] // Required for pause instruction
-#![feature(int_roundings)]
 
 use std::ptr::NonNull;
 use std::sync::Arc;

storage/virtio-blkd/src/main.rs

@@ -1,5 +1,4 @@
 #![deny(trivial_numeric_casts, unused_allocation)]
-#![feature(int_roundings)]
 
 use std::sync::{Arc, Weak};
 

virtio-core/src/lib.rs

@@ -1,5 +1,3 @@
-#![feature(int_roundings)]
-
 pub mod spec;
 pub mod transport;
 pub mod utils;