Simplify waiting loops

diff --git a/src/soc/experiment/alu_hier.py b/src/soc/experiment/alu_hier.py
index c01b7f8a4185d92bbf6abdd6a2c9077d72e8636f..d18f195ad5dbbe2b8987c403a5f9a75962eb75c4 100644 (file)
--- a/src/soc/experiment/alu_hier.py
+++ b/src/soc/experiment/alu_hier.py
@@ -413,20 +413,13 @@ def run_op(dut, a, b, op, inv_a=0):
     yield
 
     # wait for the ALU to accept our input data
-    while True:
-        rdy = yield dut.p.ready_o
-        if rdy:
-            break
+    while not (yield dut.p.ready_o):
         yield
 
     yield dut.p.valid_i.eq(0)
 
     # wait for the ALU to present the output data
-    while True:
-        yield Settle()
-        vld = yield dut.n.valid_o
-        if vld:
-            break
+    while not (yield dut.n.valid_o):
         yield
 
     # latch the result and lower read_i