netdev - [PATCH net 1/4] net: wwan: iosm: fix kernel test robot reported error

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Message-Id: <20221122174615.3496806-1-m.chetan.kumar@linux.intel.com>
Date:   Tue, 22 Nov 2022 23:16:15 +0530
From:   m.chetan.kumar@...ux.intel.com
To:     netdev@...r.kernel.org
Cc:     kuba@...nel.org, davem@...emloft.net, johannes@...solutions.net,
        ryazanov.s.a@...il.com, loic.poulain@...aro.org,
        m.chetan.kumar@...ux.intel.com, linuxwwan@...el.com,
        edumazet@...gle.com, pabeni@...hat.com,
        kernel test robot <lkp@...el.com>
Subject: [PATCH net 1/4] net: wwan: iosm: fix kernel test robot reported error

From: M Chetan Kumar <m.chetan.kumar@...ux.intel.com>

sparse warnings - iosm_ipc_mux_codec.c:1474 using plain
integer as NULL pointer.

Use skb_trim() to reset skb tail & len.

Fixes: 9413491e20e1 ("net: iosm: encode or decode datagram")
Reported-by: kernel test robot <lkp@...el.com>
Signed-off-by: M Chetan Kumar <m.chetan.kumar@...ux.intel.com>
---
 drivers/net/wwan/iosm/iosm_ipc_mux_codec.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/wwan/iosm/iosm_ipc_mux_codec.c b/drivers/net/wwan/iosm/iosm_ipc_mux_codec.c
index d41e373f9c0a..c16365123660 100644
--- a/drivers/net/wwan/iosm/iosm_ipc_mux_codec.c
+++ b/drivers/net/wwan/iosm/iosm_ipc_mux_codec.c
@@ -1471,8 +1471,7 @@ void ipc_mux_ul_encoded_process(struct iosm_mux *ipc_mux, struct sk_buff *skb)
 			ipc_mux->ul_data_pend_bytes);
 
 	/* Reset the skb settings. */
-	skb->tail = 0;
-	skb->len = 0;
+	skb_trim(skb, 0);
 
 	/* Add the consumed ADB to the free list. */
 	skb_queue_tail((&ipc_mux->ul_adb.free_list), skb);
-- 
2.34.1