rusticl/mesa: add return status to PipeFence::wait

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36158>

src/gallium/frontends/rusticl/core/context.rs

@@ -183,7 +183,9 @@ impl Context {
                     d.helper_ctx()
                         .exec(|ctx| ctx.buffer_subdata(r, 0, user_ptr, size.try_into().unwrap()))
                 })
-                .for_each(|f| f.wait());
+                .for_each(|f| {
+                    f.wait();
+                });
         }
 
         Ok(res)
@@ -255,7 +257,9 @@ impl Context {
                     d.helper_ctx()
                         .exec(|ctx| ctx.texture_subdata(r, &bx, user_ptr, stride, layer_stride))
                 })
-                .for_each(|f| f.wait());
+                .for_each(|f| {
+                    f.wait();
+                });
         }
 
         Ok(res)

src/gallium/frontends/rusticl/mesa/pipe/fence.rs

@@ -30,8 +30,11 @@ impl PipeFence {
         }
     }
 
-    pub fn wait(&self) {
-        self.screen.fence_finish(self.fence);
+    /// Returns false on errors.
+    ///
+    /// TODO: should be a Result.
+    pub fn wait(&self) -> bool {
+        self.screen.fence_finish(self.fence)
     }
 }
 

src/gallium/frontends/rusticl/mesa/pipe/screen.rs

@@ -445,14 +445,14 @@ impl PipeScreen {
         }
     }
 
-    pub(super) fn fence_finish(&self, fence: *mut pipe_fence_handle) {
+    pub(super) fn fence_finish(&self, fence: *mut pipe_fence_handle) -> bool {
         unsafe {
             self.screen().fence_finish.unwrap()(
                 self.screen.as_ptr(),
                 ptr::null_mut(),
                 fence,
                 OS_TIMEOUT_INFINITE as u64,
-            );
+            )
         }
     }