diff options
| author | Jean Delvare <khali@linux-fr.org> | 2007-10-15 14:32:27 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-11-02 08:44:15 -0700 |
| commit | f5000270cfd5087ac68477766065445c5fdc343b (patch) | |
| tree | 6ca31b6ae9fbc4fa6f725a5e194106491187e269 /drivers | |
| parent | f3c97cd833e15aa67cf24e6ac84a81ce02a0aca0 (diff) | |
| download | lwn-f5000270cfd5087ac68477766065445c5fdc343b.tar.gz lwn-f5000270cfd5087ac68477766065445c5fdc343b.zip | |
hwmon/w83627hf: Fix setting fan min right after driver load
Already in Linus' tree:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=c09c5184a26158da32801e89d5849d774605f0dd
We need to read the fan clock dividers at initialization time,
otherwise the code in store_fan_min() may use uninitialized values.
That's pretty much the same bug and same fix as for the w83627ehf
driver last month.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/hwmon/w83627hf.c | 34 |
1 files changed, 22 insertions, 12 deletions
diff --git a/drivers/hwmon/w83627hf.c b/drivers/hwmon/w83627hf.c index 12cb40a975de..32d79f06428e 100644 --- a/drivers/hwmon/w83627hf.c +++ b/drivers/hwmon/w83627hf.c @@ -335,6 +335,7 @@ static int w83627hf_remove(struct platform_device *pdev); static int w83627hf_read_value(struct w83627hf_data *data, u16 reg); static int w83627hf_write_value(struct w83627hf_data *data, u16 reg, u16 value); +static void w83627hf_update_fan_div(struct w83627hf_data *data); static struct w83627hf_data *w83627hf_update_device(struct device *dev); static void w83627hf_init_device(struct platform_device *pdev); @@ -1127,6 +1128,7 @@ static int __devinit w83627hf_probe(struct platform_device *pdev) data->fan_min[0] = w83627hf_read_value(data, W83781D_REG_FAN_MIN(1)); data->fan_min[1] = w83627hf_read_value(data, W83781D_REG_FAN_MIN(2)); data->fan_min[2] = w83627hf_read_value(data, W83781D_REG_FAN_MIN(3)); + w83627hf_update_fan_div(data); /* Register common device attributes */ if ((err = sysfs_create_group(&dev->kobj, &w83627hf_group))) @@ -1430,6 +1432,24 @@ static void __devinit w83627hf_init_device(struct platform_device *pdev) | 0x01); } +static void w83627hf_update_fan_div(struct w83627hf_data *data) +{ + int reg; + + reg = w83627hf_read_value(data, W83781D_REG_VID_FANDIV); + data->fan_div[0] = (reg >> 4) & 0x03; + data->fan_div[1] = (reg >> 6) & 0x03; + if (data->type != w83697hf) { + data->fan_div[2] = (w83627hf_read_value(data, + W83781D_REG_PIN) >> 6) & 0x03; + } + reg = w83627hf_read_value(data, W83781D_REG_VBAT); + data->fan_div[0] |= (reg >> 3) & 0x04; + data->fan_div[1] |= (reg >> 4) & 0x04; + if (data->type != w83697hf) + data->fan_div[2] |= (reg >> 5) & 0x04; +} + static struct w83627hf_data *w83627hf_update_device(struct device *dev) { struct w83627hf_data *data = dev_get_drvdata(dev); @@ -1493,18 +1513,8 @@ static struct w83627hf_data *w83627hf_update_device(struct device *dev) w83627hf_read_value(data, W83781D_REG_TEMP_HYST(3)); } - i = w83627hf_read_value(data, W83781D_REG_VID_FANDIV); - data->fan_div[0] = (i >> 4) & 0x03; - data->fan_div[1] = (i >> 6) & 0x03; - if (data->type != w83697hf) { - data->fan_div[2] = (w83627hf_read_value(data, - W83781D_REG_PIN) >> 6) & 0x03; - } - i = w83627hf_read_value(data, W83781D_REG_VBAT); - data->fan_div[0] |= (i >> 3) & 0x04; - data->fan_div[1] |= (i >> 4) & 0x04; - if (data->type != w83697hf) - data->fan_div[2] |= (i >> 5) & 0x04; + w83627hf_update_fan_div(data); + data->alarms = w83627hf_read_value(data, W83781D_REG_ALARM1) | (w83627hf_read_value(data, W83781D_REG_ALARM2) << 8) | |