diff --git a/net/9p/client.c b/net/9p/client.c
index 8e5c6a8d0a3733d03a9c36ca8854f828cb8cc678..1218fb3b52dad115e4343c465ea891aed38d34c0 100644
--- a/net/9p/client.c
+++ b/net/9p/client.c
@@ -592,9 +592,8 @@ static int p9_check_zc_errors(struct p9_client *c, struct p9_req_t *req,
 		ename = &req->rc->sdata[req->rc->offset];
 		if (len > inline_len) {
 			/* We have error in external buffer */
-			err = copy_from_iter(ename + inline_len,
-					     len - inline_len, uidata);
-			if (err != len - inline_len) {
+			if (!copy_from_iter_full(ename + inline_len,
+					     len - inline_len, uidata)) {
 				err = -EFAULT;
 				goto out_err;
 			}
diff --git a/net/9p/protocol.c b/net/9p/protocol.c
index 16d28756598789504f9a30a07476256a2146b2e3..16e10680518c4cba784296ff96ddcc2643cabf82 100644
--- a/net/9p/protocol.c
+++ b/net/9p/protocol.c
@@ -74,7 +74,7 @@ pdu_write_u(struct p9_fcall *pdu, struct iov_iter *from, size_t size)
 {
 	size_t len = min(pdu->capacity - pdu->size, size);
 	struct iov_iter i = *from;
-	if (copy_from_iter(&pdu->sdata[pdu->size], len, &i) != len)
+	if (!copy_from_iter_full(&pdu->sdata[pdu->size], len, &i))
 		len = 0;
 
 	pdu->size += len;