diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-12-09 19:53:11 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-12-09 19:53:11 -0800 |
commit | f71eaf68406cfee91b6a96bcdf7ce33dc78829c5 (patch) | |
tree | 92a1663ae15d521f25849d28ebb4dfad10567892 /drivers/hwmon/lm75.c | |
parent | 78f1ae193d1662c22cfebb916e788e1ca896c0fe (diff) | |
parent | 54fe4671aa5853ca88da72d67e969a3d8de6dcf6 (diff) |
Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging
* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging: (41 commits)
hwmon: (adt7475) Add VID support for the ADT7476
hwmon: (adt7475) Add an entry in MAINTAINERS
hwmon: (adt7475) Add support for the ADT7476
hwmon: (adt7475) Voltage attenuators can be bypassed
hwmon: (adt7475) Print device information on probe
hwmon: (adt7475) Handle alternative pin functions
hwmon: (adt7475) Move sysfs files removal to a separate function
hwmon: (adt7475) Add support for the ADT7490
hwmon: (adt7475) Improve device detection
hwmon: (adt7475) Add missing static marker
hwmon: (adt7475) Rework voltage inputs handling
hwmon: (adt7475) Implement pwm_use_point2_pwm_at_crit
hwmon: (adt7475) New documentation
hwmon: (adt7475) Add support for the ADT7473
hwmon: (f71882fg) Add support for the f71889fg (version 2)
hwmon: (f71882fg) Fix sysfs file removal
hwmon: (f71882fg) Cleanup sysfs attr creation 2/2
hwmon: (f71882fg) Cleanup sysfs attr creation 1/2
hwmon: (thmc50) Stop using I2C_CLIENT_MODULE_PARM
hwmon: Add Freescale MC13783 ADC driver
...
Diffstat (limited to 'drivers/hwmon/lm75.c')
-rw-r--r-- | drivers/hwmon/lm75.c | 56 |
1 files changed, 26 insertions, 30 deletions
diff --git a/drivers/hwmon/lm75.c b/drivers/hwmon/lm75.c index 55bd87c15c9..e392548cccb 100644 --- a/drivers/hwmon/lm75.c +++ b/drivers/hwmon/lm75.c @@ -239,6 +239,7 @@ static int lm75_detect(struct i2c_client *new_client, int kind, { struct i2c_adapter *adapter = new_client->adapter; int i; + int cur, conf, hyst, os; if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA)) @@ -251,40 +252,35 @@ static int lm75_detect(struct i2c_client *new_client, int kind, The cycling+unused addresses combination is not tested, since it would significantly slow the detection down and would hardly add any value. */ - if (kind < 0) { - int cur, conf, hyst, os; - - /* Unused addresses */ - cur = i2c_smbus_read_word_data(new_client, 0); - conf = i2c_smbus_read_byte_data(new_client, 1); - hyst = i2c_smbus_read_word_data(new_client, 2); - if (i2c_smbus_read_word_data(new_client, 4) != hyst - || i2c_smbus_read_word_data(new_client, 5) != hyst - || i2c_smbus_read_word_data(new_client, 6) != hyst - || i2c_smbus_read_word_data(new_client, 7) != hyst) - return -ENODEV; - os = i2c_smbus_read_word_data(new_client, 3); - if (i2c_smbus_read_word_data(new_client, 4) != os - || i2c_smbus_read_word_data(new_client, 5) != os - || i2c_smbus_read_word_data(new_client, 6) != os - || i2c_smbus_read_word_data(new_client, 7) != os) - return -ENODEV; - /* Unused bits */ - if (conf & 0xe0) - return -ENODEV; + /* Unused addresses */ + cur = i2c_smbus_read_word_data(new_client, 0); + conf = i2c_smbus_read_byte_data(new_client, 1); + hyst = i2c_smbus_read_word_data(new_client, 2); + if (i2c_smbus_read_word_data(new_client, 4) != hyst + || i2c_smbus_read_word_data(new_client, 5) != hyst + || i2c_smbus_read_word_data(new_client, 6) != hyst + || i2c_smbus_read_word_data(new_client, 7) != hyst) + return -ENODEV; + os = i2c_smbus_read_word_data(new_client, 3); + if (i2c_smbus_read_word_data(new_client, 4) != os + || i2c_smbus_read_word_data(new_client, 5) != os + || i2c_smbus_read_word_data(new_client, 6) != os + || i2c_smbus_read_word_data(new_client, 7) != os) + return -ENODEV; - /* Addresses cycling */ - for (i = 8; i < 0xff; i += 8) - if (i2c_smbus_read_byte_data(new_client, i + 1) != conf - || i2c_smbus_read_word_data(new_client, i + 2) != hyst - || i2c_smbus_read_word_data(new_client, i + 3) != os) - return -ENODEV; + /* Unused bits */ + if (conf & 0xe0) + return -ENODEV; + + /* Addresses cycling */ + for (i = 8; i < 0xff; i += 8) { + if (i2c_smbus_read_byte_data(new_client, i + 1) != conf + || i2c_smbus_read_word_data(new_client, i + 2) != hyst + || i2c_smbus_read_word_data(new_client, i + 3) != os) + return -ENODEV; } - /* NOTE: we treat "force=..." and "force_lm75=..." the same. - * Only new-style driver binding distinguishes chip types. - */ strlcpy(info->type, "lm75", I2C_NAME_SIZE); return 0; |