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Date:   Fri, 1 Oct 2021 18:12:16 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Jens Axboe <axboe@...nel.dk>,
        Naresh Kamboju <naresh.kamboju@...aro.org>,
        open list <linux-kernel@...r.kernel.org>,
        linux-block <linux-block@...r.kernel.org>,
        Linux-Next Mailing List <linux-next@...r.kernel.org>,
        lkft-triage@...ts.linaro.org
Cc:     Stephen Rothwell <sfr@...b.auug.org.au>
Subject: Re: swim3.c:1200:38: error: 'FLOPPY_MAJOR' undeclared (first use in
 this function)

On 10/1/21 12:57 PM, Jens Axboe wrote:
> On 10/1/21 4:49 AM, Naresh Kamboju wrote:
>> Following build errors noticed while building Linux next 20211001
>> with gcc-11 for powerpc architecture.
>>
>> kernel/sched/debug.c: In function 'print_cfs_group_stats':
>> kernel/sched/debug.c:460:41: warning: unused variable 'stats'
>> [-Wunused-variable]
>>    460 |                struct sched_statistics *stats =
>> __schedstats_from_se(se);
>>        |                                         ^~~~~
>> In file included from include/linux/blkdev.h:6,
>>                   from include/linux/blk-mq.h:5,
>>                   from drivers/block/swim3.c:24:
>> drivers/block/swim3.c: In function 'swim3_attach':
>> drivers/block/swim3.c:1200:38: error: 'FLOPPY_MAJOR' undeclared (first
>> use in this function)
>>   1200 |                 rc = register_blkdev(FLOPPY_MAJOR, "fd");
>>        |                                      ^~~~~~~~~~~~
>> include/linux/genhd.h:276:27: note: in definition of macro 'register_blkdev'
>>    276 |         __register_blkdev(major, name, NULL)
>>        |                           ^~~~~
>> drivers/block/swim3.c:1200:38: note: each undeclared identifier is
>> reported only once for each function it appears in
>>   1200 |                 rc = register_blkdev(FLOPPY_MAJOR, "fd");
>>        |                                      ^~~~~~~~~~~~
>> include/linux/genhd.h:276:27: note: in definition of macro 'register_blkdev'
>>    276 |         __register_blkdev(major, name, NULL)
>>        |                           ^~~~~
>> make[3]: *** [scripts/Makefile.build:288: drivers/block/swim3.o] Error 1
>> make[3]: Target '__build' not remade because of errors.
>> make[2]: *** [scripts/Makefile.build:571: drivers/block] Error 2
>> make[2]: Target '__build' not remade because of errors.
>> make[1]: *** [Makefile:2034: drivers] Error 2
>>
>> Build config:
>> https://builds.tuxbuild.com/1ytcB62L9I617oV0cveJtUhcpUu/config
>>
>> Reported-by: Linux Kernel Functional Testing <lkft@...aro.org>
>>
>> meta data:
>> -----------
>>      git_repo: https://gitlab.com/Linaro/lkft/mirrors/next/linux-next
>>      git_sha: a25006a77348ba06c7bc96520d331cd9dd370715
>>      git_short_log: a25006a77348 (\"Add linux-next specific files for 20211001\")
>>      kconfig:  ppc6xx_defconfig
>>      kernel_version: 5.15.0-rc3
>>      target_arch: powerpc
>>      toolchain: gcc-11
>>
>> steps to reproduce:
>> https://builds.tuxbuild.com/1ytcB62L9I617oV0cveJtUhcpUu/tuxmake_reproducer.sh
> 
> Does this fix it?

Yes, WorksForMe.

Acked-by: Randy Dunlap <rdunlap@...radead.org> # build-tested

Thanks.

> 
> diff --git a/drivers/block/swim3.c b/drivers/block/swim3.c
> index f7e3482e846b..4b91c9aa5892 100644
> --- a/drivers/block/swim3.c
> +++ b/drivers/block/swim3.c
> @@ -27,6 +27,7 @@
>   #include <linux/module.h>
>   #include <linux/spinlock.h>
>   #include <linux/wait.h>
> +#include <linux/major.h>
>   #include <asm/io.h>
>   #include <asm/dbdma.h>
>   #include <asm/prom.h>
> 


-- 
~Randy

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