Fix a bunch of warnings

drivers/common/src/io/mmio_ptr.rs

@@ -1,5 +1,3 @@
-use core::ptr;
-
 use super::Io;
 
 /// MMIO using pointer instead of wrapped type
@@ -35,11 +33,11 @@ where
     type Value = T;
 
     fn read(&self) -> T {
-        unsafe { ptr::read_volatile(self.ptr) }
+        unsafe { core::ptr::read_volatile(self.ptr) }
     }
 
     fn write(&mut self, value: T) {
-        unsafe { ptr::write_volatile(self.ptr, value) };
+        unsafe { core::ptr::write_volatile(self.ptr, value) };
     }
 }
 

drivers/common/src/lib.rs

@@ -278,14 +278,12 @@ pub fn acquire_port_io_rights() -> Result<()> {
         fn redox_cur_thrfd_v0() -> usize;
     }
     let kernel_fd = syscall::dup(unsafe { redox_cur_thrfd_v0() }, b"open_via_dup")?;
-    let res = unsafe {
-        libredox::call::call_wo(
-            kernel_fd,
-            &[],
-            syscall::CallFlags::empty(),
-            &[ProcSchemeVerb::Iopl as u64],
-        )
-    };
+    let res = libredox::call::call_wo(
+        kernel_fd,
+        &[],
+        syscall::CallFlags::empty(),
+        &[ProcSchemeVerb::Iopl as u64],
+    );
     let _ = syscall::close(kernel_fd);
     res?;
     Ok(())
@@ -310,9 +308,7 @@ impl VirtaddrTranslationHandle {
     /// Translate physical => virtual.
     pub fn translate(&self, physical: usize) -> Result<usize> {
         let mut buf = physical.to_ne_bytes();
-        unsafe {
-            libredox::call::call_ro(self.fd.raw(), &mut buf, syscall::CallFlags::empty(), &[])?;
-        }
+        libredox::call::call_ro(self.fd.raw(), &mut buf, syscall::CallFlags::empty(), &[])?;
         Ok(usize::from_ne_bytes(buf))
     }
 }