Changeset 2597

Timestamp:

06/19/04 09:14:48 (9 years ago)

Author:

khali

Message:

Refine detection.

Files:

• lm-sensors/trunk/kernel/chips/pca9540.c (modified) (2 diffs)

lm-sensors/trunk/kernel/chips/pca9540.c

@@ -69 +69 @@
 static struct i2c_driver pca9540_driver = {
         .owner          = THIS_MODULE,
-        .name           = "PCA9540 sensor chip driver",
+        .name           = "PCA9540 chip driver",
         .flags          = I2C_DF_NOTIFY,
         .attach_adapter = pca9540_attach_adapter,
@@ -123 +123 @@
         /* The detection is very weak. */
         if (kind < 0) {
-                if (i2c_smbus_read_byte(new_client) & 0xf8)
-                {
+                u8 reg = i2c_smbus_read_byte(new_client);
+                if ((reg & 0xfa) != 0x00
+                 || reg != i2c_smbus_read_byte(new_client)
+                 || reg != i2c_smbus_read_byte(new_client)
+                 || reg != i2c_smbus_read_byte(new_client)) {
                         err = -ENODEV;
                         goto ERROR1;