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SubjectRe: [PATCH] powerpc/sysdev: fix compile errors
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Jiri Kosina <jikos@kernel.org> writes:
> On Mon, 18 May 2020, Jiri Kosina wrote:
>> > > Include linux/io.h into fsl_85xx_cache_sram.c to fix the
>> > > implicit-declaration compile errors when building Cache-Sram.
>> > >
>> > > arch/powerpc/sysdev/fsl_85xx_cache_sram.c: In function
>> > > ‘instantiate_cache_sram’:
>> > > arch/powerpc/sysdev/fsl_85xx_cache_sram.c:97:26: error: implicit declaration
>> > > of function ‘ioremap_coherent’; did you mean ‘bitmap_complement’?
>> > > [-Werror=implicit-function-declaration]
>> > > cache_sram->base_virt = ioremap_coherent(cache_sram->base_phys,
>> > > ^~~~~~~~~~~~~~~~
>> > > bitmap_complement
>> > > arch/powerpc/sysdev/fsl_85xx_cache_sram.c:97:24: error: assignment makes
>> > > pointer from integer without a cast [-Werror=int-conversion]
>> > > cache_sram->base_virt = ioremap_coherent(cache_sram->base_phys,
>> > > ^
>> > > arch/powerpc/sysdev/fsl_85xx_cache_sram.c:123:2: error: implicit declaration
>> > > of function ‘iounmap’; did you mean ‘roundup’?
>> > > [-Werror=implicit-function-declaration]
>> > > iounmap(cache_sram->base_virt);
>> > > ^~~~~~~
>> > > roundup
>> > > cc1: all warnings being treated as errors
>> > >
>> > > Fixed: commit 6db92cc9d07d ("powerpc/85xx: add cache-sram support")
>> > > Signed-off-by: WANG Wenhu <wenhu.wang@vivo.com>
>> >
>> > Reviewed-by: Christophe Leroy <christophe.leroy@c-s.fr>
>>
>> As this doesn't seem to have been picked up for linux-next yet, I am
>> picking it up now.
>
> Only now I've noticed that this is actually a dead code o_O as this file
> can't be built by any combination of config options. So I am dropping the
> patch again, but why do we keep it in the tree in the first place?

Yeah, sigh.

As Christophe pointed out, it has been dead code for a long time but
there is a series in flight that's trying to make it usable.

cheers

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