Hi Shaokun, [auto build test ERROR on next-20170619] [also build test ERROR on v4.12-rc7] [cannot apply to linus/master linux/master arm64/for-next/core v4.12-rc6 v4.12-rc5 v4.12-rc4] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Shaokun-Zhang/Add-HiSilicon-SoC-uncore-Performance-Monitoring-Unit-driver/20170628-070841 config: i386-allmodconfig (attached as .config) compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 reproduce: # save the attached .config to linux build tree make ARCH=i386 All errors (new ones prefixed by >>): drivers/perf/hisilicon/hisi_uncore_l3c_pmu.c: In function 'hisi_l3c_pmu_read_counter': >> drivers/perf/hisilicon/hisi_uncore_l3c_pmu.c:69:9: error: implicit declaration of function 'readq' [-Werror=implicit-function-declaration] return readq(l3c_pmu->base + reg); ^~~~~ drivers/perf/hisilicon/hisi_uncore_l3c_pmu.c: In function 'hisi_l3c_pmu_write_counter': >> drivers/perf/hisilicon/hisi_uncore_l3c_pmu.c:85:2: error: implicit declaration of function 'writeq' [-Werror=implicit-function-declaration] writeq(val, l3c_pmu->base + reg); ^~~~~~ cc1: some warnings being treated as errors coccinelle warnings: (new ones prefixed by >>) >> drivers/perf/hisilicon/hisi_uncore_l3c_pmu.c:348:1-3: WARNING: PTR_ERR_OR_ZERO can be used Please review and possibly fold the followup patch. vim +/readq +69 drivers/perf/hisilicon/hisi_uncore_l3c_pmu.c 63 return 0; 64 } 65 66 reg = get_counter_reg_off(idx); 67 68 /* Read 64-bits and the upper 16 bits are Read-As-Zero */ > 69 return readq(l3c_pmu->base + reg); 70 } 71 72 static void hisi_l3c_pmu_write_counter(struct hisi_pmu *l3c_pmu, 73 struct hw_perf_event *hwc, u64 val) 74 { 75 u32 idx = hwc->idx; 76 u32 reg; 77 78 if (!hisi_uncore_pmu_counter_valid(l3c_pmu, idx)) { 79 dev_err(l3c_pmu->dev, "Unsupported event index:%d!\n", idx); 80 return; 81 } 82 83 reg = get_counter_reg_off(idx); 84 /* Write 64-bits and the upper 16 bits are Writes-Ignored */ > 85 writeq(val, l3c_pmu->base + reg); 86 } 87 88 static void hisi_l3c_pmu_write_evtype(struct hisi_pmu *l3c_pmu, int idx, --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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