zephyr: uart: Conditionalize irq handling for alloc

Currently, the IRQ handling code requires a SpinMutex which is only available with Arc, which requires allocation. Disable this use of the driver in this situation. Signed-off-by: David Brown <[email protected]>
zephyrproject-rtos · Dec 11, 2024 · b3c7363 · b3c7363
1 parent 173942a
commit b3c7363
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/zephyr/src/device/uart.rs b/zephyr/src/device/uart.rs
@@ -13,7 +13,9 @@ use core::ptr;
 
 use super::Unique;
 
+#[cfg(CONFIG_RUST_ALLOC)]
 mod irq;
+#[cfg(CONFIG_RUST_ALLOC)]
 pub use irq::UartIrq;
 
 /// A wrapper around a UART device on Zephyr.
@@ -123,6 +125,7 @@ impl Uart {
 
     /// Convert into an IRQ one.  The parameters `WS` and `RS` set the size of the rings for write
     /// and read respectively.
+    #[cfg(CONFIG_RUST_ALLOC)]
     pub unsafe fn into_irq<const WS: usize, const RS: usize>(self) -> Result<UartIrq<WS, RS>> {
         UartIrq::new(self)
     }