Re: [PATCH net-next 11/11] net: fec: add AF_XDP zero-copy support
From: kernel test robot <hidden>
Date: 2026-01-13 09:30:56
Also in:
bpf, imx, lkml, oe-kbuild-all
Hi Wei, 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/Wei-Fang/net-fec-add-fec_txq_trigger_xmit-helper/20260113-113607 base: net-next/main patch link: https://lore.kernel.org/r/20260113032939.3705137-12-wei.fang%40nxp.com patch subject: [PATCH net-next 11/11] net: fec: add AF_XDP zero-copy support config: sh-allyesconfig (https://download.01.org/0day-ci/archive/20260113/202601131736.i41CNo5A-lkp@intel.com/config) compiler: sh4-linux-gcc (GCC) 15.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260113/202601131736.i41CNo5A-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 [off-list ref] | Closes: https://lore.kernel.org/oe-kbuild-all/202601131736.i41CNo5A-lkp@intel.com/ (local) All warnings (new ones prefixed by >>): drivers/net/ethernet/freescale/fec_main.c: In function 'fec_enet_rx_queue_xsk':
quoted
drivers/net/ethernet/freescale/fec_main.c:2261:20: warning: variable 'dma' set but not used [-Wunused-but-set-variable]
2261 | dma_addr_t dma;
| ^~~
vim +/dma +2261 drivers/net/ethernet/freescale/fec_main.c
2245
2246 static int fec_enet_rx_queue_xsk(struct fec_enet_private *fep, int queue,
2247 int budget, struct bpf_prog *prog)
2248 {
2249 u32 data_start = FEC_ENET_XDP_HEADROOM + fep->rx_shift;
2250 struct fec_enet_priv_rx_q *rxq = fep->rx_queue[queue];
2251 struct net_device *ndev = fep->netdev;
2252 struct bufdesc *bdp = rxq->bd.cur;
2253 u32 sub_len = 4 + fep->rx_shift;
2254 int cpu = smp_processor_id();
2255 bool wakeup_xsk = false;
2256 struct xdp_buff *xsk;
2257 int pkt_received = 0;
2258 struct sk_buff *skb;
2259 u16 status, pkt_len;
2260 u32 xdp_res = 0;2261 dma_addr_t dma;
2262 int index, err; 2263 u32 act; 2264 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki