fix warnings

src/backend/drm/device/atomic.rs

@@ -52,7 +52,7 @@ impl<A: AsRawFd + 'static> AtomicDrmDevice<A> {
         let plane_handles = dev.fd.plane_handles().map_err(|source| Error::Access {
             errmsg: "Error loading planes",
             dev: dev.fd.dev_path(),
-            source,
+            source
         })?;
         let planes = plane_handles.planes();
 
@@ -239,7 +239,7 @@ impl<A: AsRawFd + 'static> Drop for AtomicDrmDevice<A> {
                         req.add_raw_property((*handle).into(), prop_handle, val);
                     }
                 }
-            };
+            }
 
             add_multiple_props(&mut req, &self.old_state.0);
             add_multiple_props(&mut req, &self.old_state.1);

src/backend/drm/render.rs

@@ -22,7 +22,7 @@ pub struct DrmRenderSurface<
     R: Bind<Dmabuf>,
     B: Buffer + TryInto<Dmabuf>,
 > {
-    format: Fourcc,
+    _format: Format,
     buffers: Buffers<D>,
     current_buffer: Option<Slot<Dmabuf, BufferObject<FbHandle<D>>>>,
     swapchain: Swapchain<A, B, BufferObject<FbHandle<D>>, Dmabuf>,
@@ -56,7 +56,7 @@ where
 
         // select a format
         let plane_formats = drm.supported_formats().iter().filter(|fmt| fmt.code == code).cloned().collect::<HashSet<_>>();
-        let mut renderer_formats = Bind::<Dmabuf>::supported_formats(&renderer).expect("Dmabuf renderer without formats")
+        let renderer_formats = Bind::<Dmabuf>::supported_formats(&renderer).expect("Dmabuf renderer without formats")
             .iter().filter(|fmt| fmt.code == code).cloned().collect::<HashSet<_>>();
 
         trace!(logger, "Remaining plane formats: {:?}", plane_formats);
@@ -140,7 +140,7 @@ where
                 let buffers = Buffers::new(drm.clone(), gbm, buffer);
                 Ok(DrmRenderSurface {
                     drm,
-                    format: format.code,
+                    _format: format,
                     renderer,
                     swapchain,
                     buffers,

src/backend/drm/surface/mod.rs

@@ -7,10 +7,10 @@ use drm::control::{Device as ControlDevice, Mode, crtc, connector, framebuffer,
 
 pub(super) mod atomic;
 pub(super) mod legacy;
-use super::{error::Error, device::DevPath};
+use super::error::Error;
 use atomic::AtomicDrmSurface;
 use legacy::LegacyDrmSurface;
-use crate::backend::allocator::{Format, Fourcc, Modifier};
+use crate::backend::allocator::Format;
 
 pub struct DrmSurface<A: AsRawFd + 'static>
 {

src/backend/egl/context.rs

@@ -1,11 +1,9 @@
 //! EGL context related structs
 use std::os::raw::c_int;
-use std::ptr;
 use std::sync::atomic::Ordering;
 
 use super::{ffi, wrap_egl_call, Error, MakeCurrentError};
 use crate::backend::egl::display::{EGLDisplay, PixelFormat};
-use crate::backend::egl::native::EGLNativeSurface;
 use crate::backend::egl::EGLSurface;
 
 

src/backend/egl/display.rs

@@ -318,7 +318,7 @@ impl EGLDisplay {
                 .map_err(Error::ConfigFailed)?;
                 value.assume_init()
             }};
-        };
+        }
 
         // return the format that was selected for our config
         let desc = unsafe {

src/backend/egl/ffi.rs

@@ -22,7 +22,7 @@ pub fn make_sure_egl_is_loaded() {
             F: for<'a> Fn(&'a str) -> *const ::std::os::raw::c_void,
         {
             f
-        };
+        }
 
         egl::load_with(|sym| {
             let name = CString::new(sym).unwrap();

src/backend/egl/mod.rs

@@ -70,12 +70,10 @@ impl ::std::error::Error for EglExtensionNotSupportedError {}
 ///
 /// Result is independent of displays and does not guarantee an extension is actually supported at runtime.
 pub unsafe fn get_proc_address(symbol: &str) -> *const c_void {
-    unsafe {
     let addr = CString::new(symbol.as_bytes()).unwrap();
     let addr = addr.as_ptr();
     ffi::egl::GetProcAddress(addr) as *const _
 }
-}
 
 /// Error that can occur when accessing an EGL buffer
 #[cfg(feature = "wayland_frontend")]

src/backend/egl/surface.rs

@@ -98,15 +98,14 @@ impl EGLSurface {
         );
 
         if self.native.needs_recreation() || surface.is_null() || is_bad_surface {
-            let previous = self.surface.compare_and_swap(
+            let previous = self.surface.compare_exchange(
                 surface,
-                unsafe {
                 self.native
                     .create(&self.display, self.config_id, &self.surface_attributes)
-                        .map_err(SwapBuffersError::EGLCreateSurface)? as *mut _
+                    .map_err(SwapBuffersError::EGLCreateSurface)? as *mut _,
-                },
                 Ordering::SeqCst,
-            );
+                Ordering::SeqCst,
+            ).expect("The surface pointer changed in between?");
             if previous == surface && !surface.is_null() {
                 let _ = unsafe { ffi::egl::DestroySurface(**self.display, surface as *const _) };
             }

src/backend/renderer/gles2/mod.rs

@@ -3,7 +3,7 @@ use std::ffi::CStr;
 use std::ptr;
 use std::rc::Rc;
 
-use cgmath::{prelude::*, Matrix3, Vector2};
+use cgmath::{prelude::*, Matrix3};
 
 mod shaders;
 use crate::backend::SwapBuffersError;

src/backend/winit.rs

@@ -168,7 +168,7 @@ where
             unreachable!("No backends for winit other then Wayland and X11 are supported")
         };
 
-        context.unbind();
+        let _ = context.unbind();
         
         (
             display,
@@ -184,7 +184,7 @@ where
 
     let window = Rc::new(winit_window);
     let egl = Rc::new(surface);
-    let mut renderer = unsafe { Gles2Renderer::new(context, log.clone())? };
+    let renderer = unsafe { Gles2Renderer::new(context, log.clone())? };
 
     Ok((
         WinitGraphicsBackend {