drivers/graphics: Avoid duplicate get_connector calls

drivers/graphics/console-draw/src/lib.rs

@@ -1,7 +1,7 @@
 extern crate ransid;
 
 use std::collections::VecDeque;
-use std::convert::{TryFrom, TryInto};
+use std::convert::TryFrom;
 use std::{cmp, io, mem, ptr};
 
 use drm::buffer::{Buffer, DrmFourcc};
@@ -59,8 +59,7 @@ pub struct V2DisplayMap {
 
 impl V2DisplayMap {
     pub fn new(display_handle: V2GraphicsHandle) -> io::Result<Self> {
-        let connector = display_handle.first_display().unwrap();
-        let connector_info = display_handle.get_connector(connector, true).unwrap();
+        let connector_info = display_handle.first_display().unwrap();
 
         let mode = connector_info.modes()[0];
         let (width, height) = mode.size();
@@ -81,11 +80,17 @@ impl V2DisplayMap {
         )?;
         let fb = display_handle.add_framebuffer(buffer.buffer(), 32, 32)?;
 
-        display_handle.set_crtc(crtc, Some(fb), (0, 0), &[connector], Some(mode))?;
+        display_handle.set_crtc(
+            crtc,
+            Some(fb),
+            (0, 0),
+            &[connector_info.handle()],
+            Some(mode),
+        )?;
 
         Ok(Self {
             display_handle,
-            connector,
+            connector: connector_info.handle(),
             crtc,
             fb,
             buffer,

drivers/graphics/fbbootlogd/src/scheme.rs

@@ -3,7 +3,6 @@ use std::collections::VecDeque;
 
 use console_draw::{Damage, TextScreen, V2DisplayMap};
 use drm::buffer::Buffer;
-use drm::control::Device;
 use graphics_ipc::V2GraphicsHandle;
 use inputd::ConsumerHandle;
 use orbclient::{Event, EventOption};
@@ -147,7 +146,7 @@ impl FbbootlogScheme {
         let mode = match map
             .display_handle
             .first_display()
-            .and_then(|handle| Ok(map.display_handle.get_connector(handle, true)?.modes()[0]))
+            .map(|info| info.modes()[0])
         {
             Ok(mode) => mode,
             Err(err) => {

drivers/graphics/fbcond/src/display.rs

@@ -1,6 +1,5 @@
 use console_draw::{Damage, TextScreen, V2DisplayMap};
 use drm::buffer::Buffer;
-use drm::control::Device;
 use graphics_ipc::V2GraphicsHandle;
 use inputd::ConsumerHandle;
 use std::io;
@@ -55,7 +54,7 @@ impl Display {
         let mode = match map
             .display_handle
             .first_display()
-            .and_then(|handle| Ok(map.display_handle.get_connector(handle, true)?.modes()[0]))
+            .map(|info| info.modes()[0])
         {
             Ok(mode) => mode,
             Err(err) => {

drivers/graphics/graphics-ipc/src/lib.rs

@@ -33,10 +33,11 @@ impl V2GraphicsHandle {
         Ok(handle)
     }
 
-    pub fn first_display(&self) -> io::Result<connector::Handle> {
+    pub fn first_display(&self) -> io::Result<connector::Info> {
         for &connector in self.resource_handles().unwrap().connectors() {
-            if self.get_connector(connector, true)?.state() == State::Connected {
-                return Ok(connector);
+            let info = self.get_connector(connector, true)?;
+            if info.state() == State::Connected {
+                return Ok(info);
             }
         }
         Err(io::Error::other("no connected display"))