From: Colin Ian King <colin.king@canonical.com>
Date: Fri, 5 Apr 2019 13:59:16 +0000 (+0100)
Subject: net: hns: fix unsigned comparison to less than zero
X-Git-Tag: v4.14.183~4
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cb6e1921f6ebf61877f7c7b4f4b3317b6aee2560;p=thirdparty%2Fkernel%2Fstable.git

net: hns: fix unsigned comparison to less than zero

commit ea401685a20b5d631957f024bda86e1f6118eb20 upstream.

Currently mskid is unsigned and hence comparisons with negative
error return values are always false. Fix this by making mskid an
int.

Fixes: f058e46855dc ("net: hns: fix ICMP6 neighbor solicitation messages discard problem")
Addresses-Coverity: ("Operands don't affect result")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Mukesh Ojha <mojha@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Cc: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c
index 7d0f3cd8a002b..4d02f728ab244 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c
@@ -2770,7 +2770,7 @@ static void set_promisc_tcam_enable(struct dsaf_device *dsaf_dev, u32 port)
 	struct hns_mac_cb *mac_cb;
 	u8 addr[ETH_ALEN] = {0};
 	u8 port_num;
-	u16 mskid;
+	int mskid;
 
 	/* promisc use vague table match with vlanid = 0 & macaddr = 0 */
 	hns_dsaf_set_mac_key(dsaf_dev, &mac_key, 0x00, port, addr);