lm85: fix the version check that broke adt7468 probing
Darrick J. Wong [Tue, 10 Mar 2009 19:55:47 +0000 (12:55 -0700)]
The verstep check in the lm85 driver fails because the upper nibble of
the version register is 0x7, not 0x6, on the adt7468 chip.  Probing of
all adt7468s was broken by 69fc1feba2d5856ff74dedb6ae9d8c490210825c
("hwmon: (lm85) Rework the device detection"), and this patch fixes
that.  Also add in a missing i2c_device_id that accidentally got dropped
from the original patch.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Cc: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/hwmon/lm85.c

index cfc1ee9..cf1422e 100644 (file)
@@ -72,6 +72,7 @@ I2C_CLIENT_INSMOD_7(lm85b, lm85c, adm1027, adt7463, adt7468, emc6d100,
 #define        LM85_COMPANY_SMSC               0x5c
 #define        LM85_VERSTEP_VMASK              0xf0
 #define        LM85_VERSTEP_GENERIC            0x60
+#define        LM85_VERSTEP_GENERIC2           0x70
 #define        LM85_VERSTEP_LM85C              0x60
 #define        LM85_VERSTEP_LM85B              0x62
 #define        LM85_VERSTEP_ADM1027            0x60
@@ -334,6 +335,7 @@ static struct lm85_data *lm85_update_device(struct device *dev);
 static const struct i2c_device_id lm85_id[] = {
        { "adm1027", adm1027 },
        { "adt7463", adt7463 },
+       { "adt7468", adt7468 },
        { "lm85", any_chip },
        { "lm85b", lm85b },
        { "lm85c", lm85c },
@@ -1153,7 +1155,8 @@ static int lm85_detect(struct i2c_client *client, int kind,
                        address, company, verstep);
 
                /* All supported chips have the version in common */
-               if ((verstep & LM85_VERSTEP_VMASK) != LM85_VERSTEP_GENERIC) {
+               if ((verstep & LM85_VERSTEP_VMASK) != LM85_VERSTEP_GENERIC &&
+                   (verstep & LM85_VERSTEP_VMASK) != LM85_VERSTEP_GENERIC2) {
                        dev_dbg(&adapter->dev, "Autodetection failed: "
                                "unsupported version\n");
                        return -ENODEV;