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

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Date:   Mon, 26 Apr 2021 11:46:29 +0200
From:   Ulf Hansson <ulf.hansson@...aro.org>
To:     Stephen Rothwell <sfr@...b.auug.org.au>
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

On Mon, 26 Apr 2021 at 03:32, Stephen Rothwell <sfr@...b.auug.org.au> wrote:
>
> 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 ...

Apologize for the delay, it should be fixed now.

Kind regards
Uffe