hwmon: (lm85) Clean up detect function

As kind is now hard-coded to -1, there is room for code clean-ups.

Signed-off-by: Jean Delvare <khali@linux-fr.org>

1 files changed, 65 insertions, 92 deletions

diff --git a/drivers/hwmon/lm85.c b/drivers/hwmon/lm85.c
index 6c53d987de1..d56da2e7470 100644
--- a/drivers/hwmon/lm85.c
+++ b/drivers/hwmon/lm85.c
@@ -5,7 +5,7 @@
     Copyright (c) 2002, 2003  Philip Pokorny <ppokorny@penguincomputing.com>
     Copyright (c) 2003        Margit Schubert-While <margitsw@t-online.de>
     Copyright (c) 2004        Justin Thiessen <jthiessen@penguincomputing.com>
-    Copyright (C) 2007, 2008  Jean Delvare <khali@linux-fr.org>
+    Copyright (C) 2007--2009  Jean Delvare <khali@linux-fr.org>
 
     Chip details at           <http://www.national.com/ds/LM/LM85.pdf>
 
@@ -1162,107 +1162,80 @@ static int lm85_detect(struct i2c_client *client, int kind,
         struct i2c_adapter *adapter = client->adapter;
         int address = client->addr;
         const char *type_name;
+        int company, verstep;
 
         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
                 /* We need to be able to do byte I/O */
                 return -ENODEV;
         }
 
-        /* If auto-detecting, determine the chip type */
-        if (kind < 0) {
-                int company = lm85_read_value(client, LM85_REG_COMPANY);
-                int verstep = lm85_read_value(client, LM85_REG_VERSTEP);
-
-                dev_dbg(&adapter->dev, "Detecting device at 0x%02x with "
-                        "COMPANY: 0x%02x and VERSTEP: 0x%02x\n",
-                        address, company, verstep);
-
-                /* All supported chips have the version in common */
-                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;
-                }
-                kind = any_chip;
-
-                /* Now, refine the detection */
-                if (company == LM85_COMPANY_NATIONAL) {
-                        switch (verstep) {
-                        case LM85_VERSTEP_LM85C:
-                                kind = lm85c;
-                                break;
-                        case LM85_VERSTEP_LM85B:
-                                kind = lm85b;
-                                break;
-                        case LM85_VERSTEP_LM96000_1:
-                        case LM85_VERSTEP_LM96000_2:
-                                /* Check for Winbond WPCD377I */
-                                if (lm85_is_fake(client)) {
-                                        dev_dbg(&adapter->dev,
-                                                "Found Winbond WPCD377I, "
-                                                "ignoring\n");
-                                        return -ENODEV;
-                                }
-                                break;
-                        }
-                } else if (company == LM85_COMPANY_ANALOG_DEV) {
-                        switch (verstep) {
-                        case LM85_VERSTEP_ADM1027:
-                                kind = adm1027;
-                                break;
-                        case LM85_VERSTEP_ADT7463:
-                        case LM85_VERSTEP_ADT7463C:
-                                kind = adt7463;
-                                break;
-                        case LM85_VERSTEP_ADT7468_1:
-                        case LM85_VERSTEP_ADT7468_2:
-                                kind = adt7468;
-                                break;
-                        }
-                } else if (company == LM85_COMPANY_SMSC) {
-                        switch (verstep) {
-                        case LM85_VERSTEP_EMC6D100_A0:
-                        case LM85_VERSTEP_EMC6D100_A1:
-                                /* Note: we can't tell a '100 from a '101 */
-                                kind = emc6d100;
-                                break;
-                        case LM85_VERSTEP_EMC6D102:
-                                kind = emc6d102;
-                                break;
+        /* Determine the chip type */
+        company = lm85_read_value(client, LM85_REG_COMPANY);
+        verstep = lm85_read_value(client, LM85_REG_VERSTEP);
+
+        dev_dbg(&adapter->dev, "Detecting device at 0x%02x with "
+                "COMPANY: 0x%02x and VERSTEP: 0x%02x\n",
+                address, company, verstep);
+
+        /* All supported chips have the version in common */
+        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;
+        }
+        type_name = "lm85";
+
+        /* Now, refine the detection */
+        if (company == LM85_COMPANY_NATIONAL) {
+                switch (verstep) {
+                case LM85_VERSTEP_LM85C:
+                        type_name = "lm85c";
+                        break;
+                case LM85_VERSTEP_LM85B:
+                        type_name = "lm85b";
+                        break;
+                case LM85_VERSTEP_LM96000_1:
+                case LM85_VERSTEP_LM96000_2:
+                        /* Check for Winbond WPCD377I */
+                        if (lm85_is_fake(client)) {
+                                dev_dbg(&adapter->dev,
+                                        "Found Winbond WPCD377I, ignoring\n");
+                                return -ENODEV;
                         }
-                } else {
-                        dev_dbg(&adapter->dev, "Autodetection failed: "
-                                "unknown vendor\n");
-                        return -ENODEV;
+                        break;
+                }
+        } else if (company == LM85_COMPANY_ANALOG_DEV) {
+                switch (verstep) {
+                case LM85_VERSTEP_ADM1027:
+                        type_name = "adm1027";
+                        break;
+                case LM85_VERSTEP_ADT7463:
+                case LM85_VERSTEP_ADT7463C:
+                        type_name = "adt7463";
+                        break;
+                case LM85_VERSTEP_ADT7468_1:
+                case LM85_VERSTEP_ADT7468_2:
+                        type_name = "adt7468";
+                        break;
                 }
+        } else if (company == LM85_COMPANY_SMSC) {
+                switch (verstep) {
+                case LM85_VERSTEP_EMC6D100_A0:
+                case LM85_VERSTEP_EMC6D100_A1:
+                        /* Note: we can't tell a '100 from a '101 */
+                        type_name = "emc6d100";
+                        break;
+                case LM85_VERSTEP_EMC6D102:
+                        type_name = "emc6d102";
+                        break;
+                }
+        } else {
+                dev_dbg(&adapter->dev,
+                        "Autodetection failed: unknown vendor\n");
+                return -ENODEV;
         }
 
-        switch (kind) {
-        case lm85b:
-                type_name = "lm85b";
-                break;
-        case lm85c:
-                type_name = "lm85c";
-                break;
-        case adm1027:
-                type_name = "adm1027";
-                break;
-        case adt7463:
-                type_name = "adt7463";
-                break;
-        case adt7468:
-                type_name = "adt7468";
-                break;
-        case emc6d100:
-                type_name = "emc6d100";
-                break;
-        case emc6d102:
-                type_name = "emc6d102";
-                break;
-        default:
-                type_name = "lm85";
-        }
         strlcpy(info->type, type_name, I2C_NAME_SIZE);
 
         return 0;