From: YueHaibing yuehaibing@huawei.com
[ Upstream commit 27fad74a5a77fe2e1f876db7bf27efcf2ec304b2 ]
If CONFIG_CRYPTO is not set or set to m, gcc building warn this:
lib/iov_iter.o: In function `hash_and_copy_to_iter': iov_iter.c:(.text+0x9129): undefined reference to `crypto_stats_get' iov_iter.c:(.text+0x9152): undefined reference to `crypto_stats_ahash_update'
Reported-by: Hulk Robot hulkci@huawei.com Fixes: d05f443554b3 ("iov_iter: introduce hash_and_copy_to_iter helper") Suggested-by: Al Viro viro@zeniv.linux.org.uk Signed-off-by: YueHaibing yuehaibing@huawei.com Signed-off-by: Al Viro viro@zeniv.linux.org.uk Signed-off-by: Sasha Levin sashal@kernel.org --- lib/iov_iter.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/lib/iov_iter.c b/lib/iov_iter.c index be4bd627caf0..a0d1cd88f903 100644 --- a/lib/iov_iter.c +++ b/lib/iov_iter.c @@ -1515,6 +1515,7 @@ EXPORT_SYMBOL(csum_and_copy_to_iter); size_t hash_and_copy_to_iter(const void *addr, size_t bytes, void *hashp, struct iov_iter *i) { +#ifdef CONFIG_CRYPTO struct ahash_request *hash = hashp; struct scatterlist sg; size_t copied; @@ -1524,6 +1525,9 @@ size_t hash_and_copy_to_iter(const void *addr, size_t bytes, void *hashp, ahash_request_set_crypt(hash, &sg, NULL, copied); crypto_ahash_update(hash); return copied; +#else + return 0; +#endif } EXPORT_SYMBOL(hash_and_copy_to_iter);