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hc
2024-05-11 04dd17822334871b23ea2862f7798fb0e0007777 
 kernel/drivers/base/regmap/regcache.c
....@@ -343,6 +343,9 @@
343343 	const char *name;
344344 	bool bypass;
345345 
346
+	if (WARN_ON(map->cache_type == REGCACHE_NONE))
347
+		return -EINVAL;
348
+
346349 	BUG_ON(!map->cache_ops);
347350 
348351 	map->lock(map->lock_arg);
....@@ -412,6 +415,9 @@
412415 	const char *name;
413416 	bool bypass;
414417 
418
+	if (WARN_ON(map->cache_type == REGCACHE_NONE))
419
+		return -EINVAL;
420
+
415421 	BUG_ON(!map->cache_ops);
416422 
417423 	map->lock(map->lock_arg);