diff --git a/drivers/hwmon/coretemp.c b/drivers/hwmon/coretemp.c
index a00245eb3fa01a1d00c82843f86c457527939de9..9577c432e77ffd75ae6316b78256c2519f62124b 100644
--- a/drivers/hwmon/coretemp.c
+++ b/drivers/hwmon/coretemp.c
@@ -506,7 +506,13 @@ static int create_core_data(struct platform_data *pdata,
 	if (attr_no > MAX_CORE_DATA - 1)
 		return -ERANGE;
 
-	/* Skip if it is a HT core, Not an error */
+	/*
+	 * Provide a single set of attributes for all HT siblings of a core
+	 * to avoid duplicate sensors (the processor ID and core ID of all
+	 * HT siblings of a core is the same).
+	 * Skip if a HT sibling of this core is already online.
+	 * This is not an error.
+	 */
 	if (pdata->core_data[attr_no] != NULL)
 		return 0;
 
@@ -763,10 +769,20 @@ static void __cpuinit put_core_offline(unsigned int cpu)
 	if (pdata->core_data[indx] && pdata->core_data[indx]->cpu == cpu)
 		coretemp_remove_core(pdata, &pdev->dev, indx);
 
-	/* Online the HT version of this core, if any */
+	/*
+	 * If a core is taken offline, but a HT sibling of the same core is
+	 * still online, register the alternate sibling. This ensures that
+	 * exactly one set of attributes is provided as long as at least one
+	 * HT sibling of a core is online.
+	 */
 	for_each_sibling(i, cpu) {
 		if (i != cpu) {
 			get_core_online(i);
+			/*
+			 * Display temperature sensor data for one HT sibling
+			 * per core only, so abort the loop after one such
+			 * sibling has been found.
+			 */
 			break;
 		}
 	}