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a="278594721" X-IronPort-AV: E=Sophos;i="5.91,292,1647327600"; d="scan'208";a="278594721" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Jun 2022 18:16:59 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.91,292,1647327600"; d="scan'208";a="672146905" Received: from lkp-server01.sh.intel.com (HELO 60dabacc1df6) ([10.239.97.150]) by FMSMGA003.fm.intel.com with ESMTP; 10 Jun 2022 18:16:58 -0700 Received: from kbuild by 60dabacc1df6 with local (Exim 4.95) (envelope-from ) id 1nzpkH-000IQJ-Bq; Sat, 11 Jun 2022 01:16:57 +0000 Date: Sat, 11 Jun 2022 09:16:10 +0800 From: kernel test robot To: Venkateshwar Rao Gannavarapu Cc: kbuild-all@lists.01.org, linux-arm-kernel@lists.infradead.org, Michal Simek , Vishal Sagar Subject: [xilinx-xlnx:xlnx_rebase_v5.15_LTS 1119/1160] drivers/gpu/drm/xlnx/xlnx_pl_disp.c:612:9: warning: 'strncpy' specified bound 4 equals destination size Message-ID: <202206110908.pS6Q4Oht-lkp@intel.com> MIME-Version: 1.0 Content-Disposition: inline X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220610_181701_506996_1D48B72F X-CRM114-Status: GOOD ( 12.38 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi Venkateshwar, FYI, the error/warning still remains. tree: https://github.com/Xilinx/linux-xlnx xlnx_rebase_v5.15_LTS head: 21e0373d8477c67f5e78448385cda0548d5fdc18 commit: ed3d6f39268f7e7e5f7f74435baeb353571851ae [1119/1160] drm: xlnx: pl_disp: Add strict check of video format in dt parsing. config: alpha-allyesconfig (https://download.01.org/0day-ci/archive/20220611/202206110908.pS6Q4Oht-lkp@intel.com/config) compiler: alpha-linux-gcc (GCC) 11.3.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/Xilinx/linux-xlnx/commit/ed3d6f39268f7e7e5f7f74435baeb353571851ae git remote add xilinx-xlnx https://github.com/Xilinx/linux-xlnx git fetch --no-tags xilinx-xlnx xlnx_rebase_v5.15_LTS git checkout ed3d6f39268f7e7e5f7f74435baeb353571851ae # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=alpha SHELL=/bin/bash drivers/gpu/drm/xlnx/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot All warnings (new ones prefixed by >>): drivers/gpu/drm/xlnx/xlnx_pl_disp.c: In function 'xlnx_pl_disp_probe': >> drivers/gpu/drm/xlnx/xlnx_pl_disp.c:612:9: warning: 'strncpy' specified bound 4 equals destination size [-Wstringop-truncation] 612 | strncpy((char *)&xlnx_pl_disp->fmt, vformat, XLNX_PL_DISP_VFMT_SIZE); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/strncpy +612 drivers/gpu/drm/xlnx/xlnx_pl_disp.c 578 579 static int xlnx_pl_disp_probe(struct platform_device *pdev) 580 { 581 struct device *dev = &pdev->dev; 582 struct device_node *vtc_node; 583 struct xlnx_pl_disp *xlnx_pl_disp; 584 int ret; 585 const char *vformat; 586 struct dma_chan *dma_chan; 587 struct xlnx_dma_chan *xlnx_dma_chan; 588 const struct drm_format_info *info; 589 590 xlnx_pl_disp = devm_kzalloc(dev, sizeof(*xlnx_pl_disp), GFP_KERNEL); 591 if (!xlnx_pl_disp) 592 return -ENOMEM; 593 594 dma_chan = of_dma_request_slave_channel(dev->of_node, "dma0"); 595 if (IS_ERR_OR_NULL(dma_chan)) { 596 dev_err(dev, "failed to request dma channel\n"); 597 return PTR_ERR(dma_chan); 598 } 599 600 xlnx_dma_chan = devm_kzalloc(dev, sizeof(*xlnx_dma_chan), GFP_KERNEL); 601 if (!xlnx_dma_chan) 602 return -ENOMEM; 603 604 xlnx_dma_chan->dma_chan = dma_chan; 605 xlnx_pl_disp->chan = xlnx_dma_chan; 606 ret = of_property_read_string(dev->of_node, "xlnx,vformat", &vformat); 607 if (ret) { 608 dev_err(dev, "No xlnx,vformat value in dts\n"); 609 goto err_dma; 610 } 611 > 612 strncpy((char *)&xlnx_pl_disp->fmt, vformat, XLNX_PL_DISP_VFMT_SIZE); 613 info = drm_format_info(xlnx_pl_disp->fmt); 614 if (!info) { 615 dev_err(dev, "Invalid video format in dts\n"); 616 ret = -EINVAL; 617 goto err_dma; 618 } 619 620 /* VTC Bridge support */ 621 vtc_node = of_parse_phandle(dev->of_node, "xlnx,bridge", 0); 622 if (vtc_node) { 623 xlnx_pl_disp->vtc_bridge = of_xlnx_bridge_get(vtc_node); 624 if (!xlnx_pl_disp->vtc_bridge) { 625 dev_info(dev, "Didn't get vtc bridge instance\n"); 626 ret = -EPROBE_DEFER; 627 goto err_dma; 628 } 629 } else { 630 dev_info(dev, "vtc bridge property not present\n"); 631 } 632 633 xlnx_pl_disp->dev = dev; 634 platform_set_drvdata(pdev, xlnx_pl_disp); 635 636 ret = component_add(dev, &xlnx_pl_disp_component_ops); 637 if (ret) 638 goto err_dma; 639 640 xlnx_pl_disp->master = xlnx_drm_pipeline_init(pdev); 641 if (IS_ERR(xlnx_pl_disp->master)) { 642 ret = PTR_ERR(xlnx_pl_disp->master); 643 dev_err(dev, "failed to initialize the drm pipeline\n"); 644 goto err_component; 645 } 646 647 dev_info(&pdev->dev, "Xlnx PL display driver probed\n"); 648 649 return 0; 650 651 err_component: 652 component_del(dev, &xlnx_pl_disp_component_ops); 653 err_dma: 654 dma_release_channel(xlnx_pl_disp->chan->dma_chan); 655 656 return ret; 657 } 658 -- 0-DAY CI Kernel Test Service https://01.org/lkp _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel