Fix test by using spin look instead of nop

Signed-off-by: Graham MacDonald <[email protected]>
dancrossnyc · Feb 5, 2023 · d8c7a94 · d8c7a94
1 parent bdd494d
commit d8c7a94
Showing 1 changed file with 1 addition and 4 deletions.
diff --git a/aarch64/src/devcons.rs b/aarch64/src/devcons.rs
@@ -1,6 +1,5 @@
 // Racy to start.
 
-use core::arch::aarch64;
 use core::mem;
 use core::mem::MaybeUninit;
 use core::ptr;
@@ -380,9 +379,7 @@ impl Uart for MiniUart {
     fn putb(&self, b: u8) {
         // Wait for UART to become ready to transmit
         while read_reg(self.miniuart_reg, AUX_MU_LSR) & (1 << 5) == 0 {
-            unsafe {
-                aarch64::__nop();
-            }
+            core::hint::spin_loop();
         }
         write_reg(self.miniuart_reg, AUX_MU_IO, b as u32);
     }