Fallback to ALSA-provided period size if setting it fails

Author: attackgoat

src/host/alsa/mod.rs

@@ -1168,9 +1168,14 @@ fn set_hw_params_periods(hw_params: &alsa::pcm::HwParams, buffer_size: BufferSiz
         };
 
         // Actual period size
-        let Ok(period_size) =
-            hw_params.set_period_size_near(period_size as _, alsa::ValueOr::Greater)
+        let Ok(period_size) = hw_params
+            .set_period_size_near(period_size as _, alsa::ValueOr::Greater)
+            .or_else(|_| {
+                // If setting fails, try to get whatever period size the device currently has
+                hw_params.get_period_size()
+            })
         else {
+            // Only fail if we can't even query the current size
             return false;
         };