netdev - Re: [PATCH net-next v25 1/1] mctp pcc: Implement MCTP over PCC Transport

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Message-ID: <202508280145.bix2s4fv-lkp@intel.com>
Date: Thu, 28 Aug 2025 01:54:48 +0800
From: kernel test robot <lkp@...el.com>
To: admiyo@...amperecomputing.com, Jeremy Kerr <jk@...econstruct.com.au>,
	Matt Johnston <matt@...econstruct.com.au>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	Sudeep Holla <sudeep.holla@....com>,
	Jonathan Cameron <Jonathan.Cameron@...wei.com>,
	Huisong Li <lihuisong@...wei.com>
Subject: Re: [PATCH net-next v25 1/1] mctp pcc: Implement MCTP over PCC
 Transport

Hi,

kernel test robot noticed the following build warnings:

[auto build test WARNING on net-next/main]

url:    https://github.com/intel-lab-lkp/linux/commits/admiyo-os-amperecomputing-com/mctp-pcc-Implement-MCTP-over-PCC-Transport/20250827-124953
base:   net-next/main
patch link:    https://lore.kernel.org/r/20250827044810.152775-2-admiyo%40os.amperecomputing.com
patch subject: [PATCH net-next v25 1/1] mctp pcc: Implement MCTP over PCC Transport
config: i386-randconfig-002-20250827 (https://download.01.org/0day-ci/archive/20250828/202508280145.bix2s4fv-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250828/202508280145.bix2s4fv-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202508280145.bix2s4fv-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/net/mctp/mctp-pcc.c:110:24: warning: variable 'mctp_pcc_ndev' set but not used [-Wunused-but-set-variable]
     110 |         struct mctp_pcc_ndev *mctp_pcc_ndev;
         |                               ^
   1 warning generated.


vim +/mctp_pcc_ndev +110 drivers/net/mctp/mctp-pcc.c

   107	
   108	static void mctp_pcc_tx_done(struct mbox_client *c, void *mssg, int r)
   109	{
 > 110		struct mctp_pcc_ndev *mctp_pcc_ndev;
   111		struct mctp_pcc_mailbox *box;
   112		struct sk_buff *skb = NULL;
   113		struct sk_buff *curr_skb;
   114	
   115		mctp_pcc_ndev = container_of(c, struct mctp_pcc_ndev, outbox.client);
   116		box = container_of(c, struct mctp_pcc_mailbox, client);
   117		spin_lock(&box->packets.lock);
   118		skb_queue_walk(&box->packets, curr_skb) {
   119			skb = curr_skb;
   120			if (skb->data == mssg) {
   121				__skb_unlink(skb, &box->packets);
   122				break;
   123			}
   124		}
   125		spin_unlock(&box->packets.lock);
   126	
   127		if (skb)
   128			dev_consume_skb_any(skb);
   129	}
   130	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki