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authorYueHaibing <yuehaibing@huawei.com>2019-04-04 10:31:14 +0800
committerAl Viro <viro@zeniv.linux.org.uk>2019-04-03 22:37:41 -0400
commit27fad74a5a77fe2e1f876db7bf27efcf2ec304b2 (patch)
tree6bb49f75fdcc7e92b63379a99edb296c2888e5d6
parent18bfb9c6a8a5fbfe1a732130bb8f65fcfc4e8aa2 (diff)
downloadlinux-stericsson-27fad74a5a77fe2e1f876db7bf27efcf2ec304b2.tar.gz
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: 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>
-rw-r--r--lib/iov_iter.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/iov_iter.c b/lib/iov_iter.c
index ea36dc355da1..b396d328a764 100644
--- a/lib/iov_iter.c
+++ b/lib/iov_iter.c
@@ -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);