Re: [PATCH v2 2/2] dell-wmi: Process only one event on devices with interface version 0

From: MichaÅ KÄpieÅ
Date: Tue Jan 12 2016 - 15:12:55 EST


> > Wouldn't it be a bit more clear if we clamped buffer_size before
> > setting buffer_end? E.g. like this:
> >
> > if (buffer_size == 0)
> > return;
> >
> > if (dell_wmi_interface_version == 0 &&
> > buffer_size > buffer_entry[0] + 1)
> > buffer_size = buffer_entry[0] + 1;
> >
> > buffer_end = buffer_entry + buffer_size;
>
> Before return adds correct cleanup part and code will be same as my
> original patch.
>
> So if more people think that your code is cleaner I'm OK with replacing
> it.

Both solutions are fine and I realize I'm a bit late to the party as you
posted the original patch almost 3 weeks ago, so I don't want to delay
it any longer. I think it's just a matter of deciding whether to
enforce the buffer size limit using buffer_size or buffer_end. As the
first option involves a little bit less writing, I thought I'd suggest
it.

> > One more minor nit: you should probably decide between "first" and
> > "one" as the phrase "only first one event" (found both in the commit
> > message and in the code comment) sounds incorrect to me.
>
> Feel free to correct commit message, I'm not very good in english...
>
> It should mean something like this... in buffer received by bios can be
> more events. That while loop iterate over events. And this my patch on
> machines with wmi version 0 will process only *one* event. And that
> event is *first* in buffer.

Don't worry, I understood your intentions from the commit message, so I
don't think it's worth posting a v3 only to correct minor stylistic
errors.

--
Best regards,
MichaÅ KÄpieÅ