245 bool nd_btt_arena_is_valid(struct nd_btt *nd_btt, struct btt_sb *super)  in nd_btt_arena_is_valid()
272 		struct btt_sb *btt_sb)  in nd_btt_version()  argument
279 		if (nvdimm_read_bytes(ndns, 0, btt_sb, sizeof(*btt_sb), 0))  in nd_btt_version()
281 		if (!nd_btt_arena_is_valid(nd_btt, btt_sb))  in nd_btt_version()
283 		if ((le16_to_cpu(btt_sb->version_major) != 2) ||  in nd_btt_version()
284 				(le16_to_cpu(btt_sb->version_minor) != 0))  in nd_btt_version()
294 		if (nvdimm_read_bytes(ndns, SZ_4K, btt_sb, sizeof(*btt_sb), 0))  in nd_btt_version()
296 		if (!nd_btt_arena_is_valid(nd_btt, btt_sb))  in nd_btt_version()
298 		if ((le16_to_cpu(btt_sb->version_major) != 1) ||  in nd_btt_version()
299 				(le16_to_cpu(btt_sb->version_minor) != 1))  in nd_btt_version()
307 		struct nd_namespace_common *ndns, struct btt_sb *btt_sb)  in __nd_btt_probe()  argument
311 	if (!btt_sb || !ndns || !nd_btt)  in __nd_btt_probe()
317 	rc = nd_btt_version(nd_btt, ndns, btt_sb);  in __nd_btt_probe()
321 	nd_btt->lbasize = le32_to_cpu(btt_sb->external_lbasize);  in __nd_btt_probe()
322 	nd_btt->uuid = kmemdup(btt_sb->uuid, 16, GFP_KERNEL);  in __nd_btt_probe()
335 	struct btt_sb *btt_sb;  in nd_btt_probe()  local
355 	btt_sb = devm_kzalloc(dev, sizeof(*btt_sb), GFP_KERNEL);  in nd_btt_probe()
356 	rc = __nd_btt_probe(to_nd_btt(btt_dev), ndns, btt_sb);  in nd_btt_probe()