From: David S. Miller <davem@davemloft.net>
Date: Mon, 30 May 2005 03:28:01 +0000 (-0700)
Subject: [IPV6]: Clear up user copy warning in flowlabel code.
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=6c94d3611be61e4cff33b311f1a626d93d1d3e92;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

[IPV6]: Clear up user copy warning in flowlabel code.

We are intentionally ignoring the copy_to_user() value,
make it clear to the compiler too.

Noted by Jeff Garzik.

Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/ipv6/ip6_flowlabel.c b/net/ipv6/ip6_flowlabel.c
index a93f6dc51979..0e5f7499debb 100644
--- a/net/ipv6/ip6_flowlabel.c
+++ b/net/ipv6/ip6_flowlabel.c
@@ -535,10 +535,12 @@ release:
 		if (err)
 			goto done;
 
-		/* Do not check for fault */
-		if (!freq.flr_label)
-			copy_to_user(&((struct in6_flowlabel_req __user *) optval)->flr_label,
-				     &fl->label, sizeof(fl->label));
+		if (!freq.flr_label) {
+			if (copy_to_user(&((struct in6_flowlabel_req __user *) optval)->flr_label,
+					 &fl->label, sizeof(fl->label))) {
+				/* Intentionally ignore fault. */
+			}
+		}
 
 		sfl1->fl = fl;
 		sfl1->next = np->ipv6_fl_list;