Fix some warnings

Author: jessebraham

espflash/src/flasher/mod.rs

@@ -17,6 +17,7 @@ use serde::{Deserialize, Serialize};
 #[cfg(feature = "serialport")]
 use serialport::UsbPortInfo;
 use strum::{Display, EnumIter, IntoEnumIterator, VariantNames};
+#[cfg(feature = "serialport")]
 use xmas_elf::ElfFile;
 
 #[cfg(feature = "serialport")]
@@ -31,7 +32,7 @@ use crate::{
         Connection,
         Port,
     },
-    error::{ConnectionError, ResultExt},
+    error::{ConnectionError, ElfError, ResultExt as _},
     flasher::stubs::{
         FlashStub,
         CHIP_DETECT_MAGIC_REG_ADDR,
@@ -41,8 +42,8 @@ use crate::{
     image_format::{ram_segments, rom_segments, Segment},
 };
 use crate::{
-    error::{ElfError, Error},
     targets::{Chip, XtalFrequency},
+    Error,
 };
 
 #[cfg(feature = "serialport")]

espflash/src/targets/esp32s2.rs

@@ -5,9 +5,9 @@ use xmas_elf::ElfFile;
 #[cfg(feature = "serialport")]
 use super::flash_target::MAX_RAM_BLOCK_SIZE;
 #[cfg(feature = "serialport")]
-use crate::connection::Connection;
+use crate::{connection::Connection, flasher::FLASH_WRITE_SIZE};
 use crate::{
-    flasher::{FlashData, FlashFrequency, FLASH_WRITE_SIZE},
+    flasher::{FlashData, FlashFrequency},
     image_format::IdfBootloaderFormat,
     targets::{Chip, Esp32Params, ReadEFuse, SpiRegisters, Target, XtalFrequency},
     Error,

espflash/src/targets/mod.rs

@@ -144,27 +144,27 @@ impl Chip {
     }
 
     #[cfg(feature = "serialport")]
-    pub(crate) fn into_rtc_wdt_reset(&self) -> Result<Box<dyn RtcWdtReset>, Error> {
+    pub(crate) fn into_rtc_wdt_reset(self) -> Result<Box<dyn RtcWdtReset>, Error> {
         match self {
             Chip::Esp32c3 => Ok(Box::new(Esp32c3)),
             Chip::Esp32p4 => Ok(Box::new(Esp32p4)),
             Chip::Esp32s2 => Ok(Box::new(Esp32s2)),
             Chip::Esp32s3 => Ok(Box::new(Esp32s3)),
             _ => Err(Error::UnsupportedFeature {
-                chip: *self,
+                chip: self,
                 feature: "RTC WDT reset".into(),
             }),
         }
     }
 
     #[cfg(feature = "serialport")]
-    pub(crate) fn into_usb_otg(&self) -> Result<Box<dyn UsbOtg>, Error> {
+    pub(crate) fn into_usb_otg(self) -> Result<Box<dyn UsbOtg>, Error> {
         match self {
             Chip::Esp32p4 => Ok(Box::new(Esp32p4)),
             Chip::Esp32s2 => Ok(Box::new(Esp32s2)),
             Chip::Esp32s3 => Ok(Box::new(Esp32s3)),
             _ => Err(Error::UnsupportedFeature {
-                chip: *self,
+                chip: self,
                 feature: "USB OTG".into(),
             }),
         }