[PATCH] relay: When unsigned ret cannot store a negative value

[roel kluin <roel.kluin@gmail.com>]

When unsigned ret cannot store a negative value

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
---
UNTESTED! is this the way to go?

diff --git a/kernel/relay.c b/kernel/relay.c
index 32b0bef..c9d62e5 100644
--- a/kernel/relay.c
+++ b/kernel/relay.c
@@ -1220,7 +1220,8 @@ static int subbuf_splice_actor(struct file *in,
 			       unsigned int flags,
 			       int *nonpad_ret)
 {
-	unsigned int pidx, poff, total_len, subbuf_pages, nr_pages, ret;
+	unsigned int pidx, poff, total_len, subbuf_pages, nr_pages;
+	ssize_t ret;
 	struct rchan_buf *rbuf = in->private_data;
 	unsigned int subbuf_size = rbuf->chan->subbuf_size;
 	uint64_t pos = (uint64_t) *ppos;
@@ -1289,7 +1290,8 @@ static int subbuf_splice_actor(struct file *in,
 	if (!spd.nr_pages)
 		return 0;
 
-	ret = *nonpad_ret = splice_to_pipe(pipe, &spd);
+	ret = splice_to_pipe(pipe, &spd);
+	*nonpad_ret = ret;
 	if (ret < 0 || ret < total_len)
 		return ret;