linux-kernel - Re: linux-next: build failure after merge of the mmc tree

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Message-ID: <20210426113156.5e445705@canb.auug.org.au>
Date:   Mon, 26 Apr 2021 11:31:56 +1000
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Ulf Hansson <ulf.hansson@...aro.org>
Cc:     Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: Re: linux-next: build failure after merge of the mmc tree

Hi all,

On Fri, 16 Apr 2021 13:49:07 +1000 Stephen Rothwell <sfr@...b.auug.org.au> wrote:
>
> This is actually just a warning.
> 
> On Fri, 16 Apr 2021 13:48:27 +1000 Stephen Rothwell <sfr@...b.auug.org.au> wrote:
> >
> > After merging the mmc tree, today's linux-next build (x86_64 allmodconfig)
> > failed like this:
> > 
> > In file included from drivers/memstick/host/r592.h:13,
> >                  from drivers/memstick/host/r592.c:21:
> > drivers/memstick/host/r592.c: In function 'r592_flush_fifo_write':
> > include/linux/kfifo.h:588:1: warning: ignoring return value of '__kfifo_uint_must_check_helper' declared with attribute 'warn_unused_result' [-Wunused-result]
> >   588 | __kfifo_uint_must_check_helper( \
> >       | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> >   589 | ({ \
> >       | ~~~~
> >   590 |  typeof((fifo) + 1) __tmp = (fifo); \
> >       |  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> >   591 |  typeof(__tmp->ptr) __buf = (buf); \
> >       |  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> >   592 |  unsigned long __n = (n); \
> >       |  ~~~~~~~~~~~~~~~~~~~~~~~~~~
> >   593 |  const size_t __recsize = sizeof(*__tmp->rectype); \
> >       |  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> >   594 |  struct __kfifo *__kfifo = &__tmp->kfifo; \
> >       |  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> >   595 |  (__recsize) ?\
> >       |  ~~~~~~~~~~~~~~
> >   596 |  __kfifo_out_r(__kfifo, __buf, __n, __recsize) : \
> >       |  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> >   597 |  __kfifo_out(__kfifo, __buf, __n); \
> >       |  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> >   598 | }) \
> >       | ~~~~
> >   599 | )
> >       | ~
> > drivers/memstick/host/r592.c:367:2: note: in expansion of macro 'kfifo_out'
> >   367 |  kfifo_out(&dev->pio_fifo, buffer, 4);
> >       |  ^~~~~~~~~
> > 
> > Caused by commit
> > 
> >   4b00ed3c5072 ("memstick: r592: remove unused variable")  

I am still getting this warning ...

-- 
Cheers,
Stephen Rothwell

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