Remove special handling of MUSL Linux now that we no longer use libudev (#749)

Author: jessebraham

espflash/src/cli/serial.rs

@@ -105,73 +105,7 @@ fn find_serial_port(ports: &[SerialPortInfo], name: &str) -> Result<SerialPortIn
     }
 }
 
-/// Serialport's auto-detect doesn't provide any port information when using
-/// MUSL Linux we can do some manual parsing of sysfs to get the relevant bits
-/// without udev
-#[cfg(all(target_os = "linux", target_env = "musl"))]
-fn detect_usb_serial_ports(_list_all_ports: bool) -> Result<Vec<SerialPortInfo>> {
-    use std::{
-        fs::{read_link, read_to_string},
-        path::{Path, PathBuf},
-    };
-
-    use serialport::UsbPortInfo;
-
-    let ports = available_ports().into_diagnostic()?;
-    let ports = ports
-        .into_iter()
-        .filter_map(|port_info| {
-            // With musl, the paths we get are `/sys/class/tty/*` or `/dev/*`
-            // In case of `/dev/*` we transform them into `/sys/class/tty/*`
-            let path = match AsRef::<Path>::as_ref(&port_info.port_name).strip_prefix("/dev/") {
-                Ok(rem) => PathBuf::from("/sys/class/tty/").join(rem),
-                Err(_) => PathBuf::from(&port_info.port_name),
-            };
-
-            // This will give something like:
-            // `/sys/devices/pci0000:00/0000:00:07.1/0000:0c:00.3/usb5/5-3/5-3.1/5-3.1:1.0/
-            // ttyUSB0/tty/ttyUSB0`
-            let mut parent_dev = path.canonicalize().ok()?;
-
-            // Walk up 3 dirs to get to the device hosting the tty:
-            // `/sys/devices/pci0000:00/0000:00:07.1/0000:0c:00.3/usb5/5-3/5-3.1/5-3.1:1.0`
-            parent_dev.pop();
-            parent_dev.pop();
-            parent_dev.pop();
-
-            // Check that the device is using the usb subsystem
-            read_link(parent_dev.join("subsystem"))
-                .ok()
-                .filter(|subsystem| subsystem.ends_with("usb"))?;
-
-            let interface = read_to_string(parent_dev.join("interface"))
-                .ok()
-                .map(|s| s.trim().to_string());
-
-            // /sys/devices/pci0000:00/0000:00:07.1/0000:0c:00.3/usb5/5-3/5-3.1
-            parent_dev.pop();
-
-            let vid = read_to_string(parent_dev.join("idVendor")).ok()?;
-            let pid = read_to_string(parent_dev.join("idProduct")).ok()?;
-
-            Some(SerialPortInfo {
-                port_type: SerialPortType::UsbPort(UsbPortInfo {
-                    vid: u16::from_str_radix(vid.trim(), 16).ok()?,
-                    pid: u16::from_str_radix(pid.trim(), 16).ok()?,
-                    product: interface,
-                    serial_number: None,
-                    manufacturer: None,
-                }),
-                port_name: format!("/dev/{}", path.file_name()?.to_str()?),
-            })
-        })
-        .collect::<Vec<_>>();
-
-    Ok(ports)
-}
-
 /// Returns a vector with available USB serial ports.
-#[cfg(not(all(target_os = "linux", target_env = "musl")))]
 fn detect_usb_serial_ports(list_all_ports: bool) -> Result<Vec<SerialPortInfo>> {
     let ports = available_ports().into_diagnostic()?;
     let ports = ports