tree: https://github.com/Xilinx/linux-xlnx master head: d3774573d5a9700273bd0c3ff82af157107f7fa6 commit: 0f447249ba48721e24292b1ddacf1b4b4e21d9a7 [9663/10510] net: axienet: added multichannel DMA support config: i386-randconfig-m021-20210209 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 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: Dan Carpenter <dan.carpenter(a)oracle.com&gt; New smatch warnings: drivers/net/ethernet/xilinx/xilinx_axienet_main.c:2948 axienet_probe() warn: missing error code 'ret' Old smatch warnings: drivers/net/ethernet/xilinx/xilinx_axienet_main.c:204 axienet_dma_bd_init() error: uninitialized symbol 'ret'. vim +/ret +2948 drivers/net/ethernet/xilinx/xilinx_axienet_main.c 6a8544f2f4d900 Appana Durga Kedareswara Rao 2020-01-24 2931 of_node_put(np); 6a8544f2f4d900 Appana Durga Kedareswara Rao 2020-01-24 2932 #endif 0f447249ba4872 Saurabh Sengar 2020-01-24 2933 if (!slave) { 0f447249ba4872 Saurabh Sengar 2020-01-24 2934 #ifdef CONFIG_AXIENET_HAS_MCDMA 0f447249ba4872 Saurabh Sengar 2020-01-24 2935 ret = axienet_mcdma_probe(pdev, lp, ndev); 0f447249ba4872 Saurabh Sengar 2020-01-24 2936 #else 0f447249ba4872 Saurabh Sengar 2020-01-24 2937 ret = axienet_dma_probe(pdev, ndev); 0f447249ba4872 Saurabh Sengar 2020-01-24 2938 #endif b482f0a0aa9973 Radhey Shyam Pandey 2020-01-24 2939 if (ret) { 0f447249ba4872 Saurabh Sengar 2020-01-24 2940 pr_err("Getting DMA resource failed\n"); 46aa27df885321 Srikanth Thokala 2015-05-05 2941 goto free_netdev; 8a3b7a252dca9f Daniel Borkmann 2012-01-19 2942 } 9e8ce9d565663f Appana Durga Kedareswara Rao 2020-01-24 2943 0f447249ba4872 Saurabh Sengar 2020-01-24 2944 if (dma_set_mask_and_coherent(lp->dev, DMA_BIT_MASK(lp->dma_mask)) != 0) { 0f447249ba4872 Saurabh Sengar 2020-01-24 2945 dev_warn(&pdev->dev, "default to %d-bit dma mask\n", XAE_DMA_MASK_MIN); 0f447249ba4872 Saurabh Sengar 2020-01-24 2946 if (dma_set_mask_and_coherent(lp->dev, DMA_BIT_MASK(XAE_DMA_MASK_MIN)) != 0) { 0f447249ba4872 Saurabh Sengar 2020-01-24 2947 dev_err(&pdev->dev, "dma_set_mask_and_coherent failed, aborting\n"); 46aa27df885321 Srikanth Thokala 2015-05-05 @2948 goto free_netdev; ret is not set on this error path. 8a3b7a252dca9f Daniel Borkmann 2012-01-19 2949 } 0f447249ba4872 Saurabh Sengar 2020-01-24 2950 } 57b6ef54c85dd8 Appana Durga Kedareswara Rao 2020-01-24 2951 b5d3f74c95f046 Appana Durga Kedareswara Rao 2020-01-24 2952 ret = axienet_dma_clk_init(pdev); b5d3f74c95f046 Appana Durga Kedareswara Rao 2020-01-24 2953 if (ret) { b5d3f74c95f046 Appana Durga Kedareswara Rao 2020-01-24 2954 if (ret != -EPROBE_DEFER) b5d3f74c95f046 Appana Durga Kedareswara Rao 2020-01-24 2955 dev_err(&pdev->dev, "DMA clock init failed %d\n", ret); b5d3f74c95f046 Appana Durga Kedareswara Rao 2020-01-24 2956 goto free_netdev; b5d3f74c95f046 Appana Durga Kedareswara Rao 2020-01-24 2957 } 0f447249ba4872 Saurabh Sengar 2020-01-24 2958 } b5d3f74c95f046 Appana Durga Kedareswara Rao 2020-01-24 2959 b5d3f74c95f046 Appana Durga Kedareswara Rao 2020-01-24 2960 ret = axienet_clk_init(pdev, &lp->aclk, &lp->eth_sclk, --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org