diff --git a/components/driver/adc.c b/components/driver/adc.c
index c0b895a061..d634260e08 100644
--- a/components/driver/adc.c
+++ b/components/driver/adc.c
@@ -99,22 +99,16 @@ static _lock_t adc1_i2s_lock;
 
 void adc_power_acquire(void)
 {
-    bool powered_on = false;
     ADC_ENTER_CRITICAL();
     s_adc_power_on_cnt++;
     if (s_adc_power_on_cnt == 1) {
         adc_power_on_internal();
-        powered_on = true;
     }
     ADC_EXIT_CRITICAL();
-    if (powered_on) {
-        ESP_LOGV(ADC_TAG, "%s: ADC powered on", __func__);
-    }
 }
 
 void adc_power_release(void)
 {
-    bool powered_off = false;
     ADC_ENTER_CRITICAL();
     s_adc_power_on_cnt--;
     /* Sanity check */
@@ -124,12 +118,8 @@ void adc_power_release(void)
         abort();
     } else if (s_adc_power_on_cnt == 0) {
         adc_power_off_internal();
-        powered_off = true;
     }
     ADC_EXIT_CRITICAL();
-    if (powered_off) {
-        ESP_LOGV(ADC_TAG, "%s: ADC powered off", __func__);
-    }
 }
 
 static void adc_power_on_internal(void)