4 files changed, 16 insertions, 12 deletions

diff --git a/embassy-sync/src/signal.rs b/embassy-sync/src/signal.rs
index 8cb832a2b..c3c10a8af 100644
--- a/embassy-sync/src/signal.rs
+++ b/embassy-sync/src/signal.rs
@@ -3,7 +3,7 @@ use core::cell::Cell;
 use core::future::{poll_fn, Future};
 use core::task::{Context, Poll, Waker};
 
-use crate::blocking_mutex::raw::{CriticalSectionRawMutex, RawMutex};
+use crate::blocking_mutex::raw::RawMutex;
 use crate::blocking_mutex::Mutex;
 
 /// Single-slot signaling primitive.
@@ -22,19 +22,20 @@ use crate::blocking_mutex::Mutex;
 ///
 /// ```
 /// use embassy_sync::signal::Signal;
+/// use embassy_sync::blocking_mutex::raw::CriticalSectionRawMutex;
 ///
 /// enum SomeCommand {
 ///   On,
 ///   Off,
 /// }
 ///
-/// static SOME_SIGNAL: Signal<SomeCommand> = Signal::new();
+/// static SOME_SIGNAL: Signal<CriticalSectionRawMutex, SomeCommand> = Signal::new();
 /// ```
-pub struct Signal<T, R = CriticalSectionRawMutex>
+pub struct Signal<M, T>
 where
-    R: RawMutex,
+    M: RawMutex,
 {
-    state: Mutex<R, Cell<State<T>>>,
+    state: Mutex<M, Cell<State<T>>>,
 }
 
 enum State<T> {
@@ -43,9 +44,9 @@ enum State<T> {
     Signaled(T),
 }
 
-impl<T, R> Signal<T, R>
+impl<M, T> Signal<M, T>
 where
-    R: RawMutex,
+    M: RawMutex,
 {
     /// Create a new `Signal`.
     pub const fn new() -> Self {
@@ -55,9 +56,9 @@ where
     }
 }
 
-impl<R, T: Send> Signal<T, R>
+impl<M, T: Send> Signal<M, T>
 where
-    R: RawMutex,
+    M: RawMutex,
 {
     /// Mark this Signal as signaled.
     pub fn signal(&self, val: T) {
diff --git a/examples/nrf/src/bin/usb_hid_keyboard.rs b/examples/nrf/src/bin/usb_hid_keyboard.rs
index 980bc1038..4eb7d37c9 100644
--- a/examples/nrf/src/bin/usb_hid_keyboard.rs
+++ b/examples/nrf/src/bin/usb_hid_keyboard.rs
@@ -12,6 +12,7 @@ use embassy_futures::select::{select, Either};
 use embassy_nrf::gpio::{Input, Pin, Pull};
 use embassy_nrf::usb::{Driver, PowerUsb};
 use embassy_nrf::{interrupt, pac};
+use embassy_sync::blocking_mutex::raw::CriticalSectionRawMutex;
 use embassy_sync::signal::Signal;
 use embassy_usb::control::OutResponse;
 use embassy_usb::{Builder, Config, DeviceStateHandler};
@@ -77,7 +78,7 @@ async fn main(_spawner: Spawner) {
     // Build the builder.
     let mut usb = builder.build();
 
-    let remote_wakeup: Signal<_> = Signal::new();
+    let remote_wakeup: Signal<CriticalSectionRawMutex, _> = Signal::new();
 
     // Run the USB device.
     let usb_fut = async {
diff --git a/examples/stm32h7/src/bin/signal.rs b/examples/stm32h7/src/bin/signal.rs
index cc3e4e3ca..6d7c168d5 100644
--- a/examples/stm32h7/src/bin/signal.rs
+++ b/examples/stm32h7/src/bin/signal.rs
@@ -4,11 +4,12 @@
 
 use defmt::{info, unwrap};
 use embassy_executor::Spawner;
+use embassy_sync::blocking_mutex::raw::CriticalSectionRawMutex;
 use embassy_sync::signal::Signal;
 use embassy_time::{Duration, Timer};
 use {defmt_rtt as _, panic_probe as _};
 
-static SIGNAL: Signal<u32> = Signal::new();
+static SIGNAL: Signal<CriticalSectionRawMutex, u32> = Signal::new();
 
 #[embassy_executor::task]
 async fn my_sending_task() {
diff --git a/examples/stm32wl/src/bin/subghz.rs b/examples/stm32wl/src/bin/subghz.rs
index 3c60a8de4..32c8b5515 100644
--- a/examples/stm32wl/src/bin/subghz.rs
+++ b/examples/stm32wl/src/bin/subghz.rs
@@ -12,6 +12,7 @@ use embassy_stm32::gpio::{Input, Level, Output, Pull, Speed};
 use embassy_stm32::interrupt;
 use embassy_stm32::interrupt::{Interrupt, InterruptExt};
 use embassy_stm32::subghz::*;
+use embassy_sync::blocking_mutex::raw::CriticalSectionRawMutex;
 use embassy_sync::signal::Signal;
 use {defmt_rtt as _, panic_probe as _};
 
@@ -64,7 +65,7 @@ async fn main(_spawner: Spawner) {
     let button = Input::new(p.PA0, Pull::Up);
     let mut pin = ExtiInput::new(button, p.EXTI0);
 
-    static IRQ_SIGNAL: Signal<()> = Signal::new();
+    static IRQ_SIGNAL: Signal<CriticalSectionRawMutex, ()> = Signal::new();
     let radio_irq = interrupt::take!(SUBGHZ_RADIO);
     radio_irq.set_handler(|_| {
         IRQ_SIGNAL.signal(());