Commit 27fad74a authored Apr 04, 2019 by YueHaibing Committed by Al Viro Apr 03, 2019

iov_iter: Fix build error without CONFIG_CRYPTO



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: d05f4435 ("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>

parent 18bfb9c6

lib/iov_iter.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -1528,6 +1528,7 @@ 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;
		@@ -1537,6 +1538,9 @@ 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);