Please check the initialization of a variable to itself on line 3001. thanks, julia ---------- Forwarded message ---------- Date: Fri, 13 Aug 2021 18:44:39 +0800 From: kernel test robot <lkp(a)intel.com&gt; To: kbuild(a)lists.01.org Cc: lkp(a)intel.com, Julia Lawall <julia.lawall(a)lip6.fr&gt; Subject: [xlnx:master 11563/12376] drivers/net/ethernet/xilinx/xilinx_axienet_main.c:3003:47-48: WARNING this kind of initialization is deprecated (https://www.kernel.org/doc/html/latest/process/deprecated.html#uninitialize d-var) CC: kbuild-all(a)lists.01.org CC: linux-arm-kernel(a)lists.infradead.org TO: Vishal Sagar <vishal.sagar(a)xilinx.com&gt; CC: Michal Simek <monstr(a)monstr.eu&gt; CC: Hyun Kwon <hyun.kwon(a)xilinx.com&gt; tree: https://github.com/Xilinx/linux-xlnx master head: af88f405134da108f814cfdf5eac9f2b60f2b800 commit: be1a315c549bd2d6be07219a14335d2e156db988 [11563/12376] staging: xlnxsync: Fix the uapi header license :::::: branch date: 2 days ago :::::: commit date: 5 months ago config: x86_64-randconfig-c022-20210812 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; Reported-by: Julia Lawall <julia.lawall(a)lip6.fr&gt; cocci warnings: (new ones prefixed by >>) vim +3003 drivers/net/ethernet/xilinx/xilinx_axienet_main.c 7033a0f491129a Appana Durga Kedareswara Rao 2020-01-24 2986 8a3b7a252dca9f Daniel Borkmann 2012-01-19 2987 /** 2be586205ca2b8 Srikanth Thokala 2015-05-05 2988 * axienet_probe - Axi Ethernet probe function. 95219aa538e11d Srikanth Thokala 2015-05-05 2989 * @pdev: Pointer to platform device structure. 8a3b7a252dca9f Daniel Borkmann 2012-01-19 2990 * b0d081c524b46c Michal Simek 2015-05-05 2991 * Return: 0, on success 8a3b7a252dca9f Daniel Borkmann 2012-01-19 2992 * Non-zero error value on failure. 8a3b7a252dca9f Daniel Borkmann 2012-01-19 2993 * 8a3b7a252dca9f Daniel Borkmann 2012-01-19 2994 * This is the probe routine for Axi Ethernet driver. This is called before 8a3b7a252dca9f Daniel Borkmann 2012-01-19 2995 * any other driver routines are invoked. It allocates and sets up the Ethernet 8a3b7a252dca9f Daniel Borkmann 2012-01-19 2996 * device. Parses through device tree and populates fields of 8a3b7a252dca9f Daniel Borkmann 2012-01-19 2997 * axienet_local. It registers the Ethernet device. 8a3b7a252dca9f Daniel Borkmann 2012-01-19 2998 */ 2be586205ca2b8 Srikanth Thokala 2015-05-05 2999 static int axienet_probe(struct platform_device *pdev) 8a3b7a252dca9f Daniel Borkmann 2012-01-19 3000 { 4c3b5b0773df3a Appana Durga Kedareswara Rao 2021-01-22 3001 int (*axienet_clk_init)(struct platform_device *pdev, 4c3b5b0773df3a Appana Durga Kedareswara Rao 2021-01-22 3002 struct clk **axi_aclk, struct clk **axis_clk, 4c3b5b0773df3a Appana Durga Kedareswara Rao 2021-01-22 @3003 struct clk **ref_clk, struct clk **tmpclk) = 4c3b5b0773df3a Appana Durga Kedareswara Rao 2021-01-22 3004 axienet_clk_init; 3135d19569c063 Appana Durga Kedareswara Rao 2021-01-22 3005 int ret = 0; 8a3b7a252dca9f Daniel Borkmann 2012-01-19 3006 struct device_node *np; 8a3b7a252dca9f Daniel Borkmann 2012-01-19 3007 struct axienet_local *lp; 8a3b7a252dca9f Daniel Borkmann 2012-01-19 3008 struct net_device *ndev; da90e38003e2f0 Tobias Klauser 2016-12-07 3009 const void *mac_addr; 8d6d4d04f7ed81 Saurabh Sengar 2021-01-22 3010 struct resource *ethres; 8495659bf93c8e Srikanth Thokala 2015-05-05 3011 u32 value; 8d6d4d04f7ed81 Saurabh Sengar 2021-01-22 3012 u16 num_queues = XAE_MAX_QUEUES; c5d8859a13f5f3 Saurabh Sengar 2021-01-22 3013 bool is_tsn = false; 8d6d4d04f7ed81 Saurabh Sengar 2021-01-22 3014 c5d8859a13f5f3 Saurabh Sengar 2021-01-22 3015 is_tsn = of_property_read_bool(pdev->dev.of_node, "xlnx,tsn"); 8d6d4d04f7ed81 Saurabh Sengar 2021-01-22 3016 ret = of_property_read_u16(pdev->dev.of_node, "xlnx,num-queues", 8d6d4d04f7ed81 Saurabh Sengar 2021-01-22 3017 &num_queues); 8d6d4d04f7ed81 Saurabh Sengar 2021-01-22 3018 if (ret) { c5d8859a13f5f3 Saurabh Sengar 2021-01-22 3019 if (!is_tsn) { 8d6d4d04f7ed81 Saurabh Sengar 2021-01-22 3020 #ifndef CONFIG_AXIENET_HAS_MCDMA 8d6d4d04f7ed81 Saurabh Sengar 2021-01-22 3021 num_queues = 1; 8d6d4d04f7ed81 Saurabh Sengar 2021-01-22 3022 #endif 8d6d4d04f7ed81 Saurabh Sengar 2021-01-22 3023 } c5d8859a13f5f3 Saurabh Sengar 2021-01-22 3024 } c5d8859a13f5f3 Saurabh Sengar 2021-01-22 3025 #ifdef CONFIG_XILINX_TSN c5d8859a13f5f3 Saurabh Sengar 2021-01-22 3026 if (is_tsn && (num_queues < XAE_TSN_MIN_QUEUES || c5d8859a13f5f3 Saurabh Sengar 2021-01-22 3027 num_queues > XAE_MAX_QUEUES)) c5d8859a13f5f3 Saurabh Sengar 2021-01-22 3028 num_queues = XAE_MAX_QUEUES; c5d8859a13f5f3 Saurabh Sengar 2021-01-22 3029 #endif 8a3b7a252dca9f Daniel Borkmann 2012-01-19 3030 8d6d4d04f7ed81 Saurabh Sengar 2021-01-22 3031 ndev = alloc_etherdev_mq(sizeof(*lp), num_queues); 41de8d4cff21a2 Joe Perches 2012-01-29 3032 if (!ndev) 8a3b7a252dca9f Daniel Borkmann 2012-01-19 3033 return -ENOMEM; 8a3b7a252dca9f Daniel Borkmann 2012-01-19 3034 95219aa538e11d Srikanth Thokala 2015-05-05 3035 platform_set_drvdata(pdev, ndev); e5971b124969cf Pranavi Somisetty 2021-01-22 3036 #ifdef CONFIG_XILINX_TSN fb5a7597eefba7 Shravya Kumbham 2021-01-22 3037 bool slave = false; e5971b124969cf Pranavi Somisetty 2021-01-22 3038 if (is_tsn) { e5971b124969cf Pranavi Somisetty 2021-01-22 3039 slave = of_property_read_bool(pdev->dev.of_node, e5971b124969cf Pranavi Somisetty 2021-01-22 3040 "xlnx,tsn-slave"); e5971b124969cf Pranavi Somisetty 2021-01-22 3041 if (slave) e5971b124969cf Pranavi Somisetty 2021-01-22 3042 snprintf(ndev->name, sizeof(ndev->name), "eth2"); e5971b124969cf Pranavi Somisetty 2021-01-22 3043 else e5971b124969cf Pranavi Somisetty 2021-01-22 3044 snprintf(ndev->name, sizeof(ndev->name), "eth1"); e5971b124969cf Pranavi Somisetty 2021-01-22 3045 } e5971b124969cf Pranavi Somisetty 2021-01-22 3046 #endif 8a3b7a252dca9f Daniel Borkmann 2012-01-19 3047 95219aa538e11d Srikanth Thokala 2015-05-05 3048 SET_NETDEV_DEV(ndev, &pdev->dev); 8a3b7a252dca9f Daniel Borkmann 2012-01-19 3049 ndev->flags &= ~IFF_MULTICAST; /* clear multicast */ 28e24c62ab3062 Eric Dumazet 2013-12-02 3050 ndev->features = NETIF_F_SG; 8a3b7a252dca9f Daniel Borkmann 2012-01-19 3051 ndev->netdev_ops = &axienet_netdev_ops; 8a3b7a252dca9f Daniel Borkmann 2012-01-19 3052 ndev->ethtool_ops = &axienet_ethtool_ops; 8a3b7a252dca9f Daniel Borkmann 2012-01-19 3053 d894be57ca92c8 Jarod Wilson 2016-10-20 3054 /* MTU range: 64 - 9000 */ d894be57ca92c8 Jarod Wilson 2016-10-20 3055 ndev->min_mtu = 64; d894be57ca92c8 Jarod Wilson 2016-10-20 3056 ndev->max_mtu = XAE_JUMBO_MTU; d894be57ca92c8 Jarod Wilson 2016-10-20 3057 8a3b7a252dca9f Daniel Borkmann 2012-01-19 3058 lp = netdev_priv(ndev); 8a3b7a252dca9f Daniel Borkmann 2012-01-19 3059 lp->ndev = ndev; 95219aa538e11d Srikanth Thokala 2015-05-05 3060 lp->dev = &pdev->dev; 8a3b7a252dca9f Daniel Borkmann 2012-01-19 3061 lp->options = XAE_OPTION_DEFAULTS; 8d6d4d04f7ed81 Saurabh Sengar 2021-01-22 3062 lp->num_tx_queues = num_queues; 8d6d4d04f7ed81 Saurabh Sengar 2021-01-22 3063 lp->num_rx_queues = num_queues; c5d8859a13f5f3 Saurabh Sengar 2021-01-22 3064 lp->is_tsn = is_tsn; 8b09ca823ffb4e Robert Hancock 2019-06-06 3065 lp->rx_bd_num = RX_BD_NUM_DEFAULT; 8b09ca823ffb4e Robert Hancock 2019-06-06 3066 lp->tx_bd_num = TX_BD_NUM_DEFAULT; 8d6d4d04f7ed81 Saurabh Sengar 2021-01-22 3067 :::::: The code at line 3003 was first introduced by commit :::::: 4c3b5b0773df3a73938529634e562784458aeb90 net: axienet: Add clock support :::::: TO: Appana Durga Kedareswara Rao <appana.durga.rao(a)xilinx.com&gt; :::::: CC: Michal Simek <michal.simek(a)xilinx.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org