Re: [PATCH 2/3] staging/rtl8192e: use s8 instead of char

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On Tuesday, July 19, 2016 11:46:04 AM CEST Jes Sorensen wrote:
> > diff --git a/drivers/staging/rtl8192e/rtl819x_TSProc.c b/drivers/staging/rtl8192e/rtl819x_TSProc.c
> > index 2c8a526773ed..e0a2fe5e6148 100644
> > --- a/drivers/staging/rtl8192e/rtl819x_TSProc.c
> > +++ b/drivers/staging/rtl8192e/rtl819x_TSProc.c
> > @@ -323,7 +323,7 @@ bool GetTs(struct rtllib_device *ieee, struct ts_common_info **ppTS,
> >       if (ieee->current_network.qos_data.supported == 0) {
> >               UP = 0;
> >       } else {
> > -             if (!IsACValid(TID)) {
> > +             if (!IsACValid((s8)TID)) {
> >                       netdev_warn(ieee->dev, "%s(): TID(%d) is not valid\n",
> >                                   __func__, TID);
> >                       return false;
> 
> TID is a 4-bit field, it should never go negative. The cast to s8 seems
> wrong to me, if anything it should be using u8. I do realize the macro
> IsACValid checks against negative too, but that just looks silly to me.

Ok, I'll remove the extra comparison then to avoid the warning:

staging/rtl8192e/rtl819x_TSProc.c:326:14: error: comparison is always true due to limited range of data type [-Werror=type-limits]

I guess it should be a separate patch. I had just stumbled over the
same thing before resending the patch but decided not to change it
to keep the patch simple.

	Arnd
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