diff options
| author | Jean Delvare <khali@linux-fr.org> | 2010-03-05 16:17:21 -0500 |
|---|---|---|
| committer | Jean Delvare <khali@linux-fr.org> | 2010-03-05 16:17:21 -0500 |
| commit | cccfc9c4bb3c7888f8249b36e08d6e115238c613 (patch) | |
| tree | acff09833d8e7fd1b87efb27394860ea398dcaa9 /Documentation/hwmon/it87 | |
| parent | 4f3f51bc21d434f8d91a79438a1957ec0baa9e30 (diff) | |
hwmon: (it87) Validate auto pwm settings
Before switching to automatic fan control mode, make sure that all the
trip points make sense. Otherwise, the control loop could lead to
weird fan behavior.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Diffstat (limited to 'Documentation/hwmon/it87')
| -rw-r--r-- | Documentation/hwmon/it87 | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/hwmon/it87 b/Documentation/hwmon/it87 index 0083bd317351..8d08bf0d38ed 100644 --- a/Documentation/hwmon/it87 +++ b/Documentation/hwmon/it87 | |||
| @@ -177,3 +177,7 @@ between trip point N and trip point N+1 then the PWM output value is | |||
| 177 | the one of trip point N. The automatic control mode is less flexible | 177 | the one of trip point N. The automatic control mode is less flexible |
| 178 | than the manual control mode, but it reacts faster, is more robust and | 178 | than the manual control mode, but it reacts faster, is more robust and |
| 179 | doesn't use CPU cycles. | 179 | doesn't use CPU cycles. |
| 180 | |||
| 181 | Trip points must be set properly before switching to automatic fan speed | ||
| 182 | control mode. The driver will perform basic integrity checks before | ||
| 183 | actually switching to automatic control mode. | ||