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Tue, 05 Apr 2022 18:22:25 +0000 Date: Wed, 6 Apr 2022 02:21:25 +0800 From: kernel test robot To: Ben Widawsky Cc: kbuild-all@lists.01.org, linux-kernel@vger.kernel.org, Dan Williams , Jonathan Cameron Subject: drivers/cxl/pci.c:439:7: warning: Local variable 'rc' shadows outer variable [shadowVariable] Message-ID: <202204060228.GdRDR2Xx-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 3123109284176b1532874591f7c81f3837bbdc17 commit: 523e594d9cc03db962c741ce02c8a58aab58a123 cxl/pci: Implement wait for media active date: 8 weeks ago config: mips-randconfig-p001-20220404 (https://download.01.org/0day-ci/archive/20220406/202204060228.GdRDR2Xx-lkp@intel.com/config) compiler: mips64-linux-gcc (GCC) 11.2.0 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://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=523e594d9cc03db962c741ce02c8a58aab58a123 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 523e594d9cc03db962c741ce02c8a58aab58a123 # save the config file to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=mips If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All errors (new ones prefixed by >>): mips64-linux-ld: arch/mips/kernel/signal.o: in function `restore_hw_fp_context': signal.c:(.text+0x1d8): undefined reference to `_restore_fp_context' mips64-linux-ld: arch/mips/kernel/signal.o: in function `save_hw_fp_context': signal.c:(.text+0x200): undefined reference to `_save_fp_context' mips64-linux-ld: arch/mips/kernel/traps.o: in function `trap_init': >> (.init.text+0x4f8): undefined reference to `handle_fpe' mips64-linux-ld: (.init.text+0x504): undefined reference to `handle_fpe' mips64-linux-ld: (.init.text+0x510): undefined reference to `handle_fpe' cppcheck warnings: (new ones prefixed by >>) >> drivers/cxl/pci.c:439:7: warning: Local variable 'rc' shadows outer variable [shadowVariable] int rc; ^ drivers/cxl/pci.c:431:6: note: Shadowed declaration int rc, i; ^ drivers/cxl/pci.c:439:7: note: Shadow variable int rc; ^ vim +/rc +439 drivers/cxl/pci.c 420 421 /* 422 * Wait up to @mbox_ready_timeout for the device to report memory 423 * active. 424 */ 425 static int wait_for_media_ready(struct cxl_dev_state *cxlds) 426 { 427 struct pci_dev *pdev = to_pci_dev(cxlds->dev); 428 int d = cxlds->cxl_dvsec; 429 bool active = false; 430 u64 md_status; 431 int rc, i; 432 433 rc = wait_for_valid(cxlds); 434 if (rc) 435 return rc; 436 437 for (i = mbox_ready_timeout; i; i--) { 438 u32 temp; > 439 int rc; 440 441 rc = pci_read_config_dword( 442 pdev, d + CXL_DVSEC_RANGE_SIZE_LOW(0), &temp); 443 if (rc) 444 return rc; 445 446 active = FIELD_GET(CXL_DVSEC_MEM_ACTIVE, temp); 447 if (active) 448 break; 449 msleep(1000); 450 } 451 452 if (!active) { 453 dev_err(&pdev->dev, 454 "timeout awaiting memory active after %d seconds\n", 455 mbox_ready_timeout); 456 return -ETIMEDOUT; 457 } 458 459 md_status = readq(cxlds->regs.memdev + CXLMDEV_STATUS_OFFSET); 460 if (!CXLMDEV_READY(md_status)) 461 return -EIO; 462 463 return 0; 464 } 465 -- 0-DAY CI Kernel Test Service https://01.org/lkp