On Thu, 2017-02-23 at 14:17 -0800, Ricardo Neri wrote:
> On Thu, 2017-02-23 at 08:24 +0100, Peter Zijlstra wrote:
> > On Wed, Feb 22, 2017 at 10:36:50PM -0800, Ricardo Neri wrote:
> > > + /*
> > > + * A negative offset generally means a error, except
> > > + * -EDOM, which means that the contents of the register
> > > + * should not be used as index.
> > > + */
> > > if (indx_offset < 0)
> > > - goto out_err;
> > > + if (indx_offset == -EDOM)
> > > + indx = 0;
> > > + else
> > > + goto out_err;
> > > + else
> > > + indx = regs_get_register(regs, indx_offset);
> >
> > Kernel coding style requires more brackets than are strictly required by
> > C, any block longer than 1 line needs then. Also, if one leg of a
> > conditional needs them, then they should be on both legs.
> >
> > Your code has many such instances, please change them all.
>
> Will do. Sorry for the noise. These instances escaped the checkpatch
> script.
Also, this code would read better with the inner test
reversed or done first
if (indx_offset < 0) {
if (indx_offset != -EDOM)
goto out_err;
indx = 0;
} else {
indx = regs_get_register(etc...)
}
or
if (indx_offset == -EDOM)
indx = 0;
else if (indx_offset < 0)
goto err;
else
indx = regs_get_register(etc...)
The compiler should generate the same code in any
case, but either could improve reader understanding.
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