Re: [PATCH v7 5/8] Loongson: YeeLoong: add hardware monitoring driver

[Wu Zhangjin <wuzhangjin@gmail.com>]

On Fri, 2009-12-04 at 09:08 +0100, Pavel Machek wrote:
> Hi!
> 
> > +static int get_cpu_temp(void)
> > +{
> > +   int value;
> > +
> > +   value = ec_read(REG_TEMPERATURE_VALUE);
> > +
> > +   if (value & (1 << 7))
> > +           value = (value & 0x7f) - 128;
> > +   else
> > +           value = value & 0xff;
> 
> wtf?
> 
> Maybe value should be 's8'?
> 
> > +static int get_battery_current(void)
> > +{
> > +   int value;
> > +
> > +   value = (ec_read(REG_BAT_CURRENT_HIGH) << 8) |
> > +           (ec_read(REG_BAT_CURRENT_LOW));
> > +
> > +   if (value & 0x8000)
> > +           value = 0xffff - value;
> 
> Another version of  pair-complement conversion; this one is broken --
> off by 1.
> 
> > +static int parse_arg(const char *buf, unsigned long count, int *val)
> > +{
> > +   if (!count)
> > +           return 0;
> > +   if (sscanf(buf, "%i", val) != 1)
> > +           return -EINVAL;
> > +   return count;
> > +}
> 
> We have strict_strtoul for a reason...
> 

Done, thanks!

Regards,
        Wu Zhangjin