diff --git a/test/unittest/platform/common/adc_test.c b/test/unittest/platform/common/adc_test.c index 1ab30f0355de36a1c3e8f92f06d8ea8a08831632..6deea85ebbaaf584063872824574cade5946480f 100644 --- a/test/unittest/platform/common/adc_test.c +++ b/test/unittest/platform/common/adc_test.c @@ -111,7 +111,7 @@ int32_t AdcTestRead(void) } for (i = 0; i < TEST_ADC_VAL_NUM; i++) { ret = AdcRead(tester->handle, tester->config.channel, &value[i]); - if (ret != HDF_SUCCESS || value[i] >= (1 << tester->config.dataWidth)) { + if (ret != HDF_SUCCESS || value[i] >= (1U << tester->config.dataWidth)) { HDF_LOGE("%s: read value invalid:%u, ret:%d", __func__, value[i], ret); return HDF_ERR_IO; }