Hi all,
This is actually just a warning.
On Fri, 16 Apr 2021 13:48:27 +1000 Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> wrote:
>
> Hi all,
>
> 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")
--
Cheers,
Stephen Rothwell
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