diff --git a/hal/src/gpio.rs b/hal/src/gpio.rs
index 83f1c468fd..085db95786 100644
--- a/hal/src/gpio.rs
+++ b/hal/src/gpio.rs
@@ -202,6 +202,7 @@ pub(crate) mod sealed {
     macro_rules! af_trait {
         ($trt:ident, $method:ident) => {
             pub trait $trt {
+                #[allow(dead_code)]
                 fn $method(&mut self, cs: &CriticalSection);
             }
         };
@@ -273,6 +274,7 @@ pub(crate) mod sealed {
     }
 
     /// Indicate a pin has any SPI NSS implementation.
+    #[allow(dead_code)]
     pub trait SpiNss {}
     /// Indicate a pin has any SPI SCK implementation.
     pub trait SpiSck {}
diff --git a/hal/src/i2c.rs b/hal/src/i2c.rs
index 703da71810..b3878e7ed9 100644
--- a/hal/src/i2c.rs
+++ b/hal/src/i2c.rs
@@ -76,15 +76,21 @@ macro_rules! busy_wait {
 }
 
 trait I2cBase {
+    #[allow(dead_code)]
     fn cr1(&self) -> &pac::i2c1::CR1;
     fn cr2(&self) -> &pac::i2c1::CR2;
     fn icr(&self) -> &pac::i2c1::ICR;
     fn isr(&self) -> &pac::i2c1::ISR;
+    #[allow(dead_code)]
     fn oar1(&self) -> &pac::i2c1::OAR1;
+    #[allow(dead_code)]
     fn oar2(&self) -> &pac::i2c1::OAR2;
+    #[allow(dead_code)]
     fn pecr(&self) -> &pac::i2c1::PECR;
     fn rxdr(&self) -> &pac::i2c1::RXDR;
+    #[allow(dead_code)]
     fn timeoutr(&self) -> &pac::i2c1::TIMEOUTR;
+    #[allow(dead_code)]
     fn timingr(&self) -> &pac::i2c1::TIMINGR;
     fn txdr(&self) -> &pac::i2c1::TXDR;
 
diff --git a/hal/src/lptim/mod.rs b/hal/src/lptim/mod.rs
index c0862773f8..434e1d8df8 100644
--- a/hal/src/lptim/mod.rs
+++ b/hal/src/lptim/mod.rs
@@ -108,7 +108,9 @@ pub(crate) mod sealed {
         fn autoreload(&self) -> u16;
         fn set_autoreload(&mut self, ar: u16);
         unsafe fn cnt() -> u16;
+        #[allow(dead_code)]
         fn set_or(&mut self, or: u32);
+        #[allow(dead_code)]
         fn set_rep(&mut self, rep: u8);
     }