diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c
index e7b678a40b39..658b486d2f5e 100644
--- a/drivers/hwmon/lm90.c
+++ b/drivers/hwmon/lm90.c
@@ -1704,6 +1704,13 @@ static int lm90_init_client(struct i2c_client *client, struct lm90_data *data)
 	if (data->kind == max6696)
 		config &= ~0x08;
 
+	/*
+	 * Interrupt is enabled by default on reset, but it may be disabled
+	 * by bootloader, unmask it.
+	 */
+	if (client->irq)
+		config &= ~0x80;
+
 	config &= 0xBF;	/* run */
 	lm90_update_confreg(data, config);