Hi Krishna, kernel test robot noticed the following build warnings: [auto build test WARNING on pci/for-linus] [also build test WARNING on robh/for-next linus/master v6.5-rc6 next-20230809] [cannot apply to pci/next] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Krishna-chaitanya-chundru/dt-bindings-pci-qcom-Add-binding-for-operating-points-v2/20230815-203103 base: https://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git for-linus patch link: https://lore.kernel.org/r/1692102408-7010-4-git-send-email-quic_krichai%40quicinc.com patch subject: [PATCH v1 3/3] PCI: qcom: Add OPP suuport for speed based performance state of RPMH config: loongarch-allyesconfig (https://download.01.org/0day-ci/archive/20230815/202308152125.sU1aQfAd-lkp@xxxxxxxxx/config) compiler: loongarch64-linux-gcc (GCC) 12.3.0 reproduce: (https://download.01.org/0day-ci/archive/20230815/202308152125.sU1aQfAd-lkp@xxxxxxxxx/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 <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202308152125.sU1aQfAd-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): drivers/pci/controller/dwc/pcie-qcom.c: In function 'qcom_pcie_opp_update': >> drivers/pci/controller/dwc/pcie-qcom.c:1368:13: warning: variable 'ret' set but not used [-Wunused-but-set-variable] 1368 | int ret = 0; | ^~~ vim +/ret +1368 drivers/pci/controller/dwc/pcie-qcom.c 1360 1361 static void qcom_pcie_opp_update(struct qcom_pcie *pcie) 1362 { 1363 struct dw_pcie *pci = pcie->pci; 1364 struct dev_pm_opp *opp; 1365 u32 offset, status; 1366 uint32_t freq; 1367 int speed; > 1368 int ret = 0; 1369 1370 offset = dw_pcie_find_capability(pci, PCI_CAP_ID_EXP); 1371 status = readw(pci->dbi_base + offset + PCI_EXP_LNKSTA); 1372 1373 /* Only update constraints if link is up. */ 1374 if (!(status & PCI_EXP_LNKSTA_DLLLA)) 1375 return; 1376 1377 speed = FIELD_GET(PCI_EXP_LNKSTA_CLS, status); 1378 1379 switch (speed) { 1380 case 1: 1381 freq = 2500000; 1382 break; 1383 case 2: 1384 freq = 5000000; 1385 break; 1386 case 3: 1387 freq = 8000000; 1388 break; 1389 default: 1390 WARN_ON_ONCE(1); 1391 fallthrough; 1392 case 4: 1393 freq = 16000000; 1394 break; 1395 } 1396 1397 opp = dev_pm_opp_find_freq_exact(pci->dev, freq, true); 1398 1399 if (!IS_ERR(opp)) { 1400 ret = dev_pm_opp_get_voltage(opp); 1401 dev_pm_opp_put(opp); 1402 } 1403 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
