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>
diff --git a/drivers/hwmon/w83l786ng.c b/drivers/hwmon/w83l786ng.c
index badca76..27da7d2 100644
--- a/drivers/hwmon/w83l786ng.c
+++ b/drivers/hwmon/w83l786ng.c
@@ -590,53 +590,31 @@
struct i2c_board_info *info)
{
struct i2c_adapter *adapter = client->adapter;
+ u16 man_id;
+ u8 chip_id;
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
return -ENODEV;
}
- /*
- * Now we do the remaining detection. A negative kind means that
- * the driver was loaded with no force parameter (default), so we
- * must both detect and identify the chip (actually there is only
- * one possible kind of chip for now, W83L786NG). A zero kind means
- * that the driver was loaded with the force parameter, the detection
- * step shall be skipped. A positive kind means that the driver
- * was loaded with the force parameter and a given kind of chip is
- * requested, so both the detection and the identification steps
- * are skipped.
- */
- if (kind < 0) { /* detection */
- if (((w83l786ng_read_value(client,
- W83L786NG_REG_CONFIG) & 0x80) != 0x00)) {
- dev_dbg(&adapter->dev,
- "W83L786NG detection failed at 0x%02x.\n",
- client->addr);
- return -ENODEV;
- }
+ /* Detection */
+ if ((w83l786ng_read_value(client, W83L786NG_REG_CONFIG) & 0x80)) {
+ dev_dbg(&adapter->dev, "W83L786NG detection failed at 0x%02x\n",
+ client->addr);
+ return -ENODEV;
}
- if (kind <= 0) { /* identification */
- u16 man_id;
- u8 chip_id;
+ /* Identification */
+ man_id = (w83l786ng_read_value(client, W83L786NG_REG_MAN_ID1) << 8) +
+ w83l786ng_read_value(client, W83L786NG_REG_MAN_ID2);
+ chip_id = w83l786ng_read_value(client, W83L786NG_REG_CHIP_ID);
- man_id = (w83l786ng_read_value(client,
- W83L786NG_REG_MAN_ID1) << 8) +
- w83l786ng_read_value(client, W83L786NG_REG_MAN_ID2);
- chip_id = w83l786ng_read_value(client, W83L786NG_REG_CHIP_ID);
-
- if (man_id == 0x5CA3) { /* Winbond */
- if (chip_id == 0x80) { /* W83L786NG */
- kind = w83l786ng;
- }
- }
-
- if (kind <= 0) { /* identification failed */
- dev_info(&adapter->dev,
- "Unsupported chip (man_id=0x%04X, "
- "chip_id=0x%02X).\n", man_id, chip_id);
- return -ENODEV;
- }
+ if (man_id != 0x5CA3 || /* Winbond */
+ chip_id != 0x80) { /* W83L786NG */
+ dev_dbg(&adapter->dev,
+ "Unsupported chip (man_id=0x%04X, chip_id=0x%02X)\n",
+ man_id, chip_id);
+ return -ENODEV;
}
strlcpy(info->type, "w83l786ng", I2C_NAME_SIZE);