We can just make it a plain assignment, 1a9cdaf was 3.15+ anyway.

StanFromIreland · StanFromIreland · commit e1940230bf6f · 2026-06-07T19:47:38.000+01:00
diff --git a/Modules/_bz2module.c b/Modules/_bz2module.c
@@ -458,7 +458,7 @@ decompress_buf(BZ2Decompressor *d, Py_ssize_t max_length)
 
         if (catch_bz2_error(bzret)) {
             d->bzerror = bzret;
-            _Py_atomic_store_char_relaxed(&d->needs_input, 0);
+            d->needs_input = 0;
             goto error;
         }
         if (bzret == BZ_STREAM_END) {

Original file line number	Diff line number	Diff line change
`@@ -458,7 +458,7 @@ decompress_buf(BZ2Decompressor *d, Py_ssize_t max_length)`
`458`	`458`
`459`	`459`	`if (catch_bz2_error(bzret)) {`
`460`	`460`	`d->bzerror = bzret;`
`461`		`- _Py_atomic_store_char_relaxed(&d->needs_input, 0);`
	`461`	`+ d->needs_input = 0;`
`462`	`462`	`goto error;`
`463`	`463`	`}`
`464`	`464`	`if (bzret == BZ_STREAM_END) {`