Re: [PATCH 4/4] hwmon: (f75375s) Let f75375_update_device treat pwmX as a measured value

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On Wed, Feb 08, 2012 at 11:00:43AM -0800, Guenter Roeck wrote:
> On Wed, 2012-02-08 at 12:56 -0500, Nikolaus Schulz wrote:
> > From: Nikolaus Schulz <schulz@xxxxxxxxxxx>
> > 
> > Treat pwmX as a measured value, not as a (mostly static) limit value, so
> > that it is updated more frequently from the device register.
> > 
> > Signed-off-by: Nikolaus Schulz <mail@xxxxxxxxxxxxxx>
> > ---
> >  drivers/hwmon/f75375s.c |    5 ++---
> >  1 files changed, 2 insertions(+), 3 deletions(-)
> > 
> > diff --git a/drivers/hwmon/f75375s.c b/drivers/hwmon/f75375s.c
> > index 0aabaaf..f609b57 100644
> > --- a/drivers/hwmon/f75375s.c
> > +++ b/drivers/hwmon/f75375s.c
> > @@ -200,9 +200,6 @@ static struct f75375_data *f75375_update_device(struct device *dev)
> >  				f75375_read16(client, F75375_REG_FAN_MIN(nr));
> >  			data->fan_target[nr] =
> >  				f75375_read16(client, F75375_REG_FAN_EXP(nr));
> > -			data->pwm[nr] =	f75375_read8(client,
> > -				F75375_REG_FAN_PWM_DUTY(nr));
> > -
> >  		}
> >  		for (nr = 0; nr < 4; nr++) {
> >  			data->in_max[nr] =
> > @@ -218,6 +215,8 @@ static struct f75375_data *f75375_update_device(struct device *dev)
> >  	if (time_after(jiffies, data->last_updated + 2 * HZ)
> >  		|| !data->valid) {
> >  		for (nr = 0; nr < 2; nr++) {
> > +			data->pwm[nr] =	f75375_read8(client,
> > +				F75375_REG_FAN_PWM_DUTY(nr));
> >  			/* assign MSB, therefore shift it by 8 bits */
> >  			data->temp11[nr] =
> >  				f75375_read8(client, F75375_REG_TEMP(nr)) << 8;
> 
> This also fixes a bug where pwm was not read at all if there is no
> platform data.

I don't think so, but anyways...

> Doesn't apply to -stable, since support for automatic
> startup (no platform data) was only added recently, but still ...

(stable@xxxxxxxxxx wasn't cc'ed here.)

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