flashrom_tester: Fix cargo check and clippy warnings

Change-Id: I50c5af61e06df1bb6956f347cb6806a7eca6ce0e
Signed-off-by: Evan Benn <evanbenn@chromium.org>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/67472
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Peter Marheine <pmarheine@chromium.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

8 files changed, 33 insertions, 45 deletions

diff --git a/util/flashrom_tester/flashrom/src/cmd.rs b/util/flashrom_tester/flashrom/src/cmd.rs
index 57ae97556..faf597d8f 100644
--- a/util/flashrom_tester/flashrom/src/cmd.rs
+++ b/util/flashrom_tester/flashrom/src/cmd.rs
@@ -67,7 +67,7 @@ pub struct IOOpt<'a> {
     pub region: Option<(&'a str, &'a str)>, // --image
 }
 
-#[derive(PartialEq, Debug)]
+#[derive(PartialEq, Eq, Debug)]
 pub struct FlashromCmd {
     pub path: String,
     pub fc: FlashChip,
@@ -84,9 +84,9 @@ fn flashrom_extract_size(stdout: &str) -> Result<i64, FlashromError> {
         .last()
         .map(str::parse::<i64>)
     {
-        None => return Err("Found no purely-numeric lines in flashrom output".into()),
+        None => Err("Found no purely-numeric lines in flashrom output".into()),
         Some(Err(e)) => {
-            return Err(format!("Failed to parse flashrom size output as integer: {}", e).into())
+            Err(format!("Failed to parse flashrom size output as integer: {}", e).into())
         }
         Some(Ok(sz)) => Ok(sz),
     }
@@ -169,7 +169,7 @@ impl crate::Flashrom for FlashromCmd {
         };
 
         let (stdout, _) = self.dispatch(opts, "wp_list")?;
-        if stdout.len() == 0 {
+        if stdout.is_empty() {
             return Err(
                 "wp_list isn't supported on platforms using the Linux kernel SPI driver wp_list"
                     .into(),
@@ -208,7 +208,7 @@ impl crate::Flashrom for FlashromCmd {
 
         let opts = FlashromOpt {
             wp_opt: WPOpt {
-                range: range,
+                range,
                 enable: en,
                 disable: !en,
                 ..Default::default()
@@ -249,7 +249,7 @@ impl crate::Flashrom for FlashromCmd {
             ..Default::default()
         };
 
-        let (stdout, _) = self.dispatch(opts, "read_region_into_file")?;
+        self.dispatch(opts, "read_region_into_file")?;
         Ok(())
     }
 
@@ -405,11 +405,6 @@ pub fn dut_ctrl_toggle_wp(en: bool) -> Result<(Vec<u8>, Vec<u8>), FlashromError>
     dut_ctrl(&args)
 }
 
-pub fn dut_ctrl_servo_type() -> Result<(Vec<u8>, Vec<u8>), FlashromError> {
-    let args = ["servo_type"];
-    dut_ctrl(&args)
-}
-
 fn dut_ctrl(args: &[&str]) -> Result<(Vec<u8>, Vec<u8>), FlashromError> {
     let output = match Command::new("dut-control").args(args).output() {
         Ok(x) => x,
@@ -431,7 +426,7 @@ fn dut_ctrl(args: &[&str]) -> Result<(Vec<u8>, Vec<u8>), FlashromError> {
 }
 
 fn hex_range_string(s: i64, l: i64) -> String {
-    format!("{:#08X},{:#08X}", s, l).to_string()
+    format!("{:#08X},{:#08X}", s, l)
 }
 
 /// Get a flash vendor and name from the first matching line of flashrom output.
diff --git a/util/flashrom_tester/flashrom/src/lib.rs b/util/flashrom_tester/flashrom/src/lib.rs
index 7326391e1..7e245ae84 100644
--- a/util/flashrom_tester/flashrom/src/lib.rs
+++ b/util/flashrom_tester/flashrom/src/lib.rs
@@ -49,7 +49,7 @@ pub use libflashrom::{
     FLASHROM_MSG_INFO, FLASHROM_MSG_SPEW, FLASHROM_MSG_WARN,
 };
 
-#[derive(Copy, Clone, PartialEq, Debug)]
+#[derive(Copy, Clone, PartialEq, Eq, Debug)]
 pub enum FlashChip {
     EC,
     HOST,
@@ -59,23 +59,21 @@ pub enum FlashChip {
 
 impl FlashChip {
     pub fn from(s: &str) -> Result<FlashChip, &str> {
-        let r = match s {
+        match s {
             "ec" => Ok(FlashChip::EC),
             "host" => Ok(FlashChip::HOST),
             "servo" => Ok(FlashChip::SERVO),
             "dediprog" => Ok(FlashChip::DEDIPROG),
             _ => Err("cannot convert str to enum"),
-        };
-        return r;
+        }
     }
     pub fn to(fc: FlashChip) -> &'static str {
-        let r = match fc {
+        match fc {
             FlashChip::EC => "ec",
             FlashChip::HOST => "host",
             FlashChip::SERVO => "ft2231_spi:type=servo-v2",
             FlashChip::DEDIPROG => "dediprog",
-        };
-        return r;
+        }
     }
 
     /// Return the programmer string and optional programmer options
@@ -97,7 +95,7 @@ impl FlashChip {
     }
 }
 
-#[derive(Debug, PartialEq)]
+#[derive(Debug, PartialEq, Eq)]
 pub struct FlashromError {
     msg: String,
 }
diff --git a/util/flashrom_tester/src/cros_sysinfo.rs b/util/flashrom_tester/src/cros_sysinfo.rs
index 7073eddf2..e047f8e61 100644
--- a/util/flashrom_tester/src/cros_sysinfo.rs
+++ b/util/flashrom_tester/src/cros_sysinfo.rs
@@ -34,7 +34,6 @@
 //
 
 use std::ffi::OsStr;
-use std::fmt::Debug;
 use std::io::Result as IoResult;
 use std::process::{Command, Stdio};
 
diff --git a/util/flashrom_tester/src/logger.rs b/util/flashrom_tester/src/logger.rs
index e1c00f5de..12e54957b 100644
--- a/util/flashrom_tester/src/logger.rs
+++ b/util/flashrom_tester/src/logger.rs
@@ -129,7 +129,7 @@ mod tests {
 
             for record in records {
                 if logger.enabled(record.metadata()) {
-                    logger.log(&record);
+                    logger.log(record);
                 }
             }
         }
diff --git a/util/flashrom_tester/src/rand_util.rs b/util/flashrom_tester/src/rand_util.rs
index 51411d0d5..1b0912bed 100644
--- a/util/flashrom_tester/src/rand_util.rs
+++ b/util/flashrom_tester/src/rand_util.rs
@@ -42,9 +42,7 @@ use rand::prelude::*;
 pub fn gen_rand_testdata(path: &str, size: usize) -> std::io::Result<()> {
     let mut buf = BufWriter::new(File::create(path)?);
 
-    let mut a: Vec<u8> = Vec::with_capacity(size);
-    // Pad out array to be filled in by Rng::fill().
-    a.resize(size, 0b0);
+    let mut a: Vec<u8> = vec![0; size];
     thread_rng().fill(a.as_mut_slice());
 
     buf.write_all(a.as_slice())?;
diff --git a/util/flashrom_tester/src/tester.rs b/util/flashrom_tester/src/tester.rs
index e701763aa..f2c38465d 100644
--- a/util/flashrom_tester/src/tester.rs
+++ b/util/flashrom_tester/src/tester.rs
@@ -69,8 +69,8 @@ impl<'a> TestEnv<'a> {
     pub fn create(chip_type: FlashChip, cmd: &'a dyn Flashrom) -> Result<Self, FlashromError> {
         let rom_sz = cmd.get_size()?;
         let out = TestEnv {
-            chip_type: chip_type,
-            cmd: cmd,
+            chip_type,
+            cmd,
             layout: utils::get_layout_sizes(rom_sz)?,
             wp: WriteProtectState::from_hardware(cmd, chip_type)?,
             original_flash_contents: "/tmp/flashrom_tester_golden.bin".into(),
@@ -462,7 +462,7 @@ impl<T: TestCase + ?Sized> TestCase for &T {
 }
 
 #[allow(dead_code)]
-#[derive(Copy, Clone, PartialEq, Debug)]
+#[derive(Copy, Clone, PartialEq, Eq, Debug)]
 pub enum TestConclusion {
     Pass,
     Fail,
@@ -514,7 +514,7 @@ where
     results
 }
 
-#[derive(Debug, PartialEq, Clone, Copy)]
+#[derive(Debug, PartialEq, Eq, Clone, Copy)]
 pub enum OutputFormat {
     Pretty,
     Json,
diff --git a/util/flashrom_tester/src/tests.rs b/util/flashrom_tester/src/tests.rs
index 7d746b5d2..1527a6e68 100644
--- a/util/flashrom_tester/src/tests.rs
+++ b/util/flashrom_tester/src/tests.rs
@@ -43,8 +43,8 @@ use std::fs::{self, File};
 use std::io::{BufRead, Write};
 use std::sync::atomic::AtomicBool;
 
-const LAYOUT_FILE: &'static str = "/tmp/layout.file";
-const ELOG_FILE: &'static str = "/tmp/elog.file";
+const LAYOUT_FILE: &str = "/tmp/layout.file";
+const ELOG_FILE: &str = "/tmp/elog.file";
 
 /// Iterate over tests, yielding only those tests with names matching filter_names.
 ///
@@ -79,6 +79,7 @@ fn filter_tests<'n, 't: 'n, T: TestCase>(
 /// test_names is the case-insensitive names of tests to run; if None, then all
 /// tests are run. Provided names that don't match any known test will be logged
 /// as a warning.
+#[allow(clippy::or_fun_call)] // This is used for to_string here and we don't care.
 pub fn generic<'a, TN: Iterator<Item = &'a str>>(
     cmd: &dyn Flashrom,
     fc: FlashChip,
@@ -132,11 +133,8 @@ pub fn generic<'a, TN: Iterator<Item = &'a str>>(
 
     // Limit the tests to only those requested, unless none are requested
     // in which case all tests are included.
-    let mut filter_names: Option<HashSet<String>> = if let Some(names) = test_names {
-        Some(names.map(|s| s.to_lowercase()).collect())
-    } else {
-        None
-    };
+    let mut filter_names: Option<HashSet<String>> =
+        test_names.map(|names| names.map(|s| s.to_lowercase()).collect());
     let tests = filter_tests(tests, &mut filter_names);
 
     let chip_name = cmd
@@ -153,15 +151,15 @@ pub fn generic<'a, TN: Iterator<Item = &'a str>>(
         warn!("No test matches filter name \"{}\"", leftover);
     }
 
-    let os_rel = sys_info::os_release().unwrap_or("<Unknown OS>".to_string());
+    let os_release = sys_info::os_release().unwrap_or("<Unknown OS>".to_string());
     let system_info = cros_sysinfo::system_info().unwrap_or("<Unknown System>".to_string());
     let bios_info = cros_sysinfo::bios_info().unwrap_or("<Unknown BIOS>".to_string());
 
     let meta_data = tester::ReportMetaData {
-        chip_name: chip_name,
-        os_release: os_rel,
-        system_info: system_info,
-        bios_info: bios_info,
+        chip_name,
+        os_release,
+        system_info,
+        bios_info,
     };
     tester::collate_all_test_runs(&results, meta_data, output_format);
     Ok(())
diff --git a/util/flashrom_tester/src/utils.rs b/util/flashrom_tester/src/utils.rs
index e8fbb5311..4e8dd7cce 100644
--- a/util/flashrom_tester/src/utils.rs
+++ b/util/flashrom_tester/src/utils.rs
@@ -143,14 +143,14 @@ pub fn get_hardware_wp() -> std::result::Result<bool, String> {
     match wp_s_val {
         Ok(v) => {
             if v == 1 {
-                return Ok(true);
+                Ok(true)
             } else if v == 0 {
-                return Ok(false);
+                Ok(false)
             } else {
-                return Err("Unknown write protect value".into());
+                Err("Unknown write protect value".into())
             }
         }
-        Err(_) => return Err("Cannot parse write protect value".into()),
+        Err(_) => Err("Cannot parse write protect value".into()),
     }
 }