linux-kernel - [PATCH net-next 1/1] net: qualcomm: rmnet: always expose a few functions

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Message-Id: <20210612135736.3414477-1-elder@linaro.org>
Date:   Sat, 12 Jun 2021 08:57:36 -0500
From:   Alex Elder <elder@...aro.org>
To:     subashab@...eaurora.org, stranche@...eaurora.org,
        davem@...emloft.net, kuba@...nel.org
Cc:     lkp@...el.com, bjorn.andersson@...aro.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH net-next 1/1] net: qualcomm: rmnet: always expose a few functions

A recent change tidied up some conditional code, avoiding the use of
some #ifdefs.  Unfortunately, if CONFIG_IPV6 was not enabled, it
meant that two functions were referenced but never defined.

The easiest fix is to just define stubs for these functions if
CONFIG_IPV6 is not defined.  This will soon be simplified further
by some other development in the works...

Reported-by: kernel test robot <lkp@...el.com>
Fixes: 75db5b07f8c39 ("net: qualcomm: rmnet: eliminate some ifdefs")
Signed-off-by: Alex Elder <elder@...aro.org>
---
 .../net/ethernet/qualcomm/rmnet/rmnet_map_data.c  | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c b/drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c
index d4d23ab446ef5..8922324159164 100644
--- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c
+++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c
@@ -188,6 +188,14 @@ rmnet_map_ipv6_dl_csum_trailer(struct sk_buff *skb,
 		return -EINVAL;
 	}
 }
+#else
+static int
+rmnet_map_ipv6_dl_csum_trailer(struct sk_buff *skb,
+			       struct rmnet_map_dl_csum_trailer *csum_trailer,
+			       struct rmnet_priv *priv)
+{
+	return 0;
+}
 #endif
 
 static void rmnet_map_complement_ipv4_txporthdr_csum_field(void *iphdr)
@@ -258,6 +266,13 @@ rmnet_map_ipv6_ul_csum_header(struct ipv6hdr *ipv6hdr,
 
 	rmnet_map_complement_ipv6_txporthdr_csum_field(ipv6hdr);
 }
+#else
+static void
+rmnet_map_ipv6_ul_csum_header(void *ip6hdr,
+			      struct rmnet_map_ul_csum_header *ul_header,
+			      struct sk_buff *skb)
+{
+}
 #endif
 
 static void rmnet_map_v5_checksum_uplink_packet(struct sk_buff *skb,
-- 
2.27.0