hwmon: (w83792d) Clean up detect function
authorJean Delvare <khali@linux-fr.org>
Wed, 9 Dec 2009 19:35:56 +0000 (20:35 +0100)
committerJean Delvare <khali@linux-fr.org>
Wed, 9 Dec 2009 19:35:56 +0000 (20:35 +0100)
As kind is now hard-coded to -1, there is room for code clean-ups.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
drivers/hwmon/w83792d.c

index 2be16194ddf3a980674ea91f111c4437a9890e5b..38978851333f6361cbb62d76d4210c6edf5e4662 100644 (file)
@@ -1273,58 +1273,33 @@ w83792d_detect(struct i2c_client *client, int kind, struct i2c_board_info *info)
                return -ENODEV;
        }
 
-       /* The w83792d may be stuck in some other bank than bank 0. This may
-          make reading other information impossible. Specify a force=... or
-          force_*=... parameter, and the Winbond will be reset to the right
-          bank. */
-       if (kind < 0) {
-               if (w83792d_read_value(client, W83792D_REG_CONFIG) & 0x80) {
-                       return -ENODEV;
-               }
-               val1 = w83792d_read_value(client, W83792D_REG_BANK);
-               val2 = w83792d_read_value(client, W83792D_REG_CHIPMAN);
-               /* Check for Winbond ID if in bank 0 */
-               if (!(val1 & 0x07)) {  /* is Bank0 */
-                       if (((!(val1 & 0x80)) && (val2 != 0xa3)) ||
-                            ((val1 & 0x80) && (val2 != 0x5c))) {
-                               return -ENODEV;
-                       }
-               }
-               /* If Winbond chip, address of chip and W83792D_REG_I2C_ADDR
-                  should match */
-               if (w83792d_read_value(client,
-                                       W83792D_REG_I2C_ADDR) != address) {
+       if (w83792d_read_value(client, W83792D_REG_CONFIG) & 0x80)
+               return -ENODEV;
+
+       val1 = w83792d_read_value(client, W83792D_REG_BANK);
+       val2 = w83792d_read_value(client, W83792D_REG_CHIPMAN);
+       /* Check for Winbond ID if in bank 0 */
+       if (!(val1 & 0x07)) {  /* is Bank0 */
+               if ((!(val1 & 0x80) && val2 != 0xa3) ||
+                   ( (val1 & 0x80) && val2 != 0x5c))
                        return -ENODEV;
-               }
        }
+       /* If Winbond chip, address of chip and W83792D_REG_I2C_ADDR
+          should match */
+       if (w83792d_read_value(client, W83792D_REG_I2C_ADDR) != address)
+               return -ENODEV;
 
-       /* We have either had a force parameter, or we have already detected the
-          Winbond. Put it now into bank 0 and Vendor ID High Byte */
+       /*  Put it now into bank 0 and Vendor ID High Byte */
        w83792d_write_value(client,
                            W83792D_REG_BANK,
                            (w83792d_read_value(client,
                                W83792D_REG_BANK) & 0x78) | 0x80);
 
        /* Determine the chip type. */
-       if (kind <= 0) {
-               /* get vendor ID */
-               val2 = w83792d_read_value(client, W83792D_REG_CHIPMAN);
-               if (val2 != 0x5c) {  /* the vendor is NOT Winbond */
-                       return -ENODEV;
-               }
-               val1 = w83792d_read_value(client, W83792D_REG_WCHIPID);
-               if (val1 == 0x7a) {
-                       kind = w83792d;
-               } else {
-                       if (kind == 0)
-                               dev_warn(&adapter->dev,
-                                       "w83792d: Ignoring 'force' parameter for"
-                                       " unknown chip at adapter %d, address"
-                                       " 0x%02x\n", i2c_adapter_id(adapter),
-                                       address);
-                       return -ENODEV;
-               }
-       }
+       val1 = w83792d_read_value(client, W83792D_REG_WCHIPID);
+       val2 = w83792d_read_value(client, W83792D_REG_CHIPMAN);
+       if (val1 != 0x7a || val2 != 0x5c)
+               return -ENODEV;
 
        strlcpy(info->type, "w83792d", I2C_NAME_SIZE);