[PATCH 6.0 055/124] net: wwan: iosm: fix kernel test robot reported error

Greg Kroah-Hartman
2022-12-05T19:25:12Z

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

[ Upstream commit 985a02e75881b73a43c9433a718b49d272a9dd6b ]

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@intel.com>
Signed-off-by: M Chetan Kumar <m.chetan.kumar@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
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);
--
2.35.1