[U-Boot] [RFC PATCH 18/20] sandbox: Remove unused variable warnings

[Simon Glass]

Hi Mike,

On Sun, Sep 25, 2011 at 9:49 PM, Mike Frysinger <vapier at gentoo.org> wrote:
> On Friday, September 23, 2011 12:01:46 Simon Glass wrote:
>> On Sat, Sep 17, 2011 at 5:25 PM, Mike Frysinger wrote:
>> > On Saturday, September 17, 2011 12:48:57 Simon Glass wrote:
>> >> There are a few variables set but not used - this marks these as unused
>> >> for the compiler.
>> >
>> > summary says "sandbox:" but i dont think this has anything to do with
>> > sandbox. you're just using a newer compiler.
>> >
>> >> --- a/common/cmd_mem.c
>> >> +++ b/common/cmd_mem.c
>> >>
>> >> -     ulong   addr, length, i, junk;
>> >> +     ulong   addr, length, i, junk __attribute__((unused));
>> >
>> > this one is tricky as we just want to read the value from the volatile
>> > pointer.  i'm guessing do "*longp++;" just adds a different warning ?
>>
>> Isn't that a nop?
>
> if it's volatile, it shouldn't be

I missed that. checkpatch warns me so badly on volatile that I assumed
we didn't use it :-)

>
>> Well I can just assign it to a different variable - I will use 'size'
>> in my new patch set.
>
> Marek Vasut posted a patch which dropped the assignment and it seems to not
> add any warnings

Yes, just tried it and it works fine.

Regards,
Simon

>
>> >> --- a/common/cmd_nvedit.c
>> >> +++ b/common/cmd_nvedit.c
>> >>
>> >> -     int len;
>> >> +     int len __attribute((unused));
>> >
>> > this file though looks like we should just delete "len"
>>
>> Yes, done. I don't use lint anyway.
>
> he also posted a fix for this :)
> -mike
>