Re: [PATCH v2] hwmon: (emc6w201) Fix DIV_ROUND_CLOSEST problem with unsigned divisors

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On Wed, 19 Dec 2012 08:26:10 -0800, Guenter Roeck wrote:
> On Wed, Dec 19, 2012 at 05:17:00PM +0100, Jean Delvare wrote:
> > Hi Guenter,
> > 
> > On Wed, 19 Dec 2012 08:01:48 -0800, Guenter Roeck wrote:
> > > Result of DIV_ROUND_CLOSEST is undefined for negative dividends if the divisor
> > > variable type is unsigned. Fix by declaring divisor as signed variable.
> > > 
> > > Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
> > > ---
> > > v2: Fix by changing divisor variable type instead of dividend variable type
> > > 
> > >  drivers/hwmon/emc6w201.c |    2 +-
> > >  1 file changed, 1 insertion(+), 1 deletion(-)
> > > 
> > > diff --git a/drivers/hwmon/emc6w201.c b/drivers/hwmon/emc6w201.c
> > > index a98c917..789bd4f 100644
> > > --- a/drivers/hwmon/emc6w201.c
> > > +++ b/drivers/hwmon/emc6w201.c
> > > @@ -187,7 +187,7 @@ static struct emc6w201_data *emc6w201_update_device(struct device *dev)
> > >   * Sysfs callback functions
> > >   */
> > >  
> > > -static const u16 nominal_mv[6] = { 2500, 1500, 3300, 5000, 1500, 1500 };
> > > +static const s16 nominal_mv[6] = { 2500, 1500, 3300, 5000, 1500, 1500 };
> > >  
> > >  static ssize_t show_in(struct device *dev, struct device_attribute *devattr,
> > >  	char *buf)
> > 
> > Applied, thanks.
> 
> Can you take the kernel.h patch as well ?

Yes I can. I'm sending my hwmon patches to Linus tonight.

For clarity: both patches are needed but they are otherwise
independent, right?

-- 
Jean Delvare

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