diff --git a/drivers/hwmon/f71805f.c b/drivers/hwmon/f71805f.c
index 37ba421..a272cae 100644
--- a/drivers/hwmon/f71805f.c
+++ b/drivers/hwmon/f71805f.c
@@ -102,9 +102,9 @@
  * ISA constants
  */
 
-#define REGION_LENGTH		2
-#define ADDR_REG_OFFSET		0
-#define DATA_REG_OFFSET		1
+#define REGION_LENGTH		8
+#define ADDR_REG_OFFSET		5
+#define DATA_REG_OFFSET		6
 
 /*
  * Registers
@@ -1359,6 +1359,7 @@
 		       "skipping\n");
 		goto exit;
 	}
+	*address &= ~(REGION_LENGTH - 1);	/* Ignore 3 LSB */
 
 	err = 0;
 	printk(KERN_INFO DRVNAME ": Found %s chip at %#x, revision %u\n",