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authorJean Delvare <khali@linux-fr.org>2009-12-09 22:35:57 +0300
committerJean Delvare <khali@linux-fr.org>2009-12-09 22:35:57 +0300
commit52df6440a29123eed912183fe785bbe174ef14b9 (patch)
tree3a3b9f4110d21c2ec4f5711444dd9cec6fb3d32c /drivers/hwmon/lm63.c
parenta1fa4cdcc4abd4c02a81ab7052c16a342d29f060 (diff)
downloadlinux-52df6440a29123eed912183fe785bbe174ef14b9.tar.xz
hwmon: Clean up detect functions
As kind is now hard-coded to -1, there is room for code clean-ups. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Corentin Labbe <corentin.labbe@geomatys.fr> Cc: "Mark M. Hoffman" <mhoffman@lightlink.com> Cc: Juerg Haefliger <juergh@gmail.com> Cc: Riku Voipio <riku.voipio@iki.fi> Acked-by: "Hans J. Koch" <hjk@linutronix.de> Cc: Rudolf Marek <r.marek@assembler.cz>
Diffstat (limited to 'drivers/hwmon/lm63.c')
-rw-r--r--drivers/hwmon/lm63.c54
1 files changed, 24 insertions, 30 deletions
diff --git a/drivers/hwmon/lm63.c b/drivers/hwmon/lm63.c
index 3195a265f0e9..5da66ab04f74 100644
--- a/drivers/hwmon/lm63.c
+++ b/drivers/hwmon/lm63.c
@@ -427,40 +427,34 @@ static int lm63_detect(struct i2c_client *new_client, int kind,
struct i2c_board_info *info)
{
struct i2c_adapter *adapter = new_client->adapter;
+ u8 man_id, chip_id, reg_config1, reg_config2;
+ u8 reg_alert_status, reg_alert_mask;
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
return -ENODEV;
- if (kind < 0) { /* must identify */
- u8 man_id, chip_id, reg_config1, reg_config2;
- u8 reg_alert_status, reg_alert_mask;
-
- man_id = i2c_smbus_read_byte_data(new_client,
- LM63_REG_MAN_ID);
- chip_id = i2c_smbus_read_byte_data(new_client,
- LM63_REG_CHIP_ID);
- reg_config1 = i2c_smbus_read_byte_data(new_client,
- LM63_REG_CONFIG1);
- reg_config2 = i2c_smbus_read_byte_data(new_client,
- LM63_REG_CONFIG2);
- reg_alert_status = i2c_smbus_read_byte_data(new_client,
- LM63_REG_ALERT_STATUS);
- reg_alert_mask = i2c_smbus_read_byte_data(new_client,
- LM63_REG_ALERT_MASK);
-
- if (man_id == 0x01 /* National Semiconductor */
- && chip_id == 0x41 /* LM63 */
- && (reg_config1 & 0x18) == 0x00
- && (reg_config2 & 0xF8) == 0x00
- && (reg_alert_status & 0x20) == 0x00
- && (reg_alert_mask & 0xA4) == 0xA4) {
- kind = lm63;
- } else { /* failed */
- dev_dbg(&adapter->dev, "Unsupported chip "
- "(man_id=0x%02X, chip_id=0x%02X).\n",
- man_id, chip_id);
- return -ENODEV;
- }
+ man_id = i2c_smbus_read_byte_data(new_client, LM63_REG_MAN_ID);
+ chip_id = i2c_smbus_read_byte_data(new_client, LM63_REG_CHIP_ID);
+
+ reg_config1 = i2c_smbus_read_byte_data(new_client,
+ LM63_REG_CONFIG1);
+ reg_config2 = i2c_smbus_read_byte_data(new_client,
+ LM63_REG_CONFIG2);
+ reg_alert_status = i2c_smbus_read_byte_data(new_client,
+ LM63_REG_ALERT_STATUS);
+ reg_alert_mask = i2c_smbus_read_byte_data(new_client,
+ LM63_REG_ALERT_MASK);
+
+ if (man_id != 0x01 /* National Semiconductor */
+ || chip_id != 0x41 /* LM63 */
+ || (reg_config1 & 0x18) != 0x00
+ || (reg_config2 & 0xF8) != 0x00
+ || (reg_alert_status & 0x20) != 0x00
+ || (reg_alert_mask & 0xA4) != 0xA4) {
+ dev_dbg(&adapter->dev,
+ "Unsupported chip (man_id=0x%02X, chip_id=0x%02X)\n",
+ man_id, chip_id);
+ return -ENODEV;
}
strlcpy(info->type, "lm63", I2C_NAME_SIZE);