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net: wwan: iosm: fix kernel test robot reported error 

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

Use skb_trim() to reset skb tail & len.

Fixes: 9413491e20 ("net: iosm: encode or decode datagram")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: M Chetan Kumar <m.chetan.kumar@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
M Chetan Kumar 2022-11-24 16:07:46 +05:30 committed by David S. Miller
parent 7642cc28fd
commit 985a02e758
1 changed files with 1 additions and 2 deletions
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3
drivers/net/wwan/iosm/iosm_ipc_mux_codec.c
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@ -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);