[PATCH 4/4] powerpc: Add -Wimplicit-fallthrough to arch CFLAGS

[Michael Ellerman]

"Gustavo A. R. Silva" <gustavo at embeddedor.com> writes:

> Hi Michael,
>
> On 10/11/18 2:32 AM, Michael Ellerman wrote:
>
>> It still pops a few errors, including in linux/signal.h & compat.h, so
>> it's somewhat aspirational until we can get those fixed up :)
>> 
>
> I wonder if you have a log containing those warnings that you can
> share with me.

Sure. The kbuild report up thread has some or most of them.

But here's a full list:

Failed 279/290
http://kisskb.ellerman.id.au/kisskb/head/1d59e2c78793d8aea9949ca71323c4583c78f488/
  Failed: powerpc-next/ppc64_defconfig/powerpc-gcc8		(http://kisskb.ellerman.id.au/kisskb/buildresult/13542791/log/)
    /kisskb/src/arch/powerpc/platforms/powermac/feature.c:1477:6: error: this statement may fall through [-Werror=implicit-fallthrough=]
    /kisskb/src/include/linux/signal.h:180:22: error: this statement may fall through [-Werror=implicit-fallthrough=]
    /kisskb/src/include/linux/compat.h:495:51: error: this statement may fall through [-Werror=implicit-fallthrough=]
    /kisskb/src/include/linux/compat.h:496:51: error: this statement may fall through [-Werror=implicit-fallthrough=]
    /kisskb/src/include/linux/compat.h:494:51: error: this statement may fall through [-Werror=implicit-fallthrough=]
  Failed: powerpc-next/corenet64_smp_defconfig/powerpc-gcc8		(http://kisskb.ellerman.id.au/kisskb/buildresult/13542786/log/)
    /kisskb/src/include/linux/compat.h:494:51: error: this statement may fall through [-Werror=implicit-fallthrough=]
    /kisskb/src/include/linux/compat.h:495:51: error: this statement may fall through [-Werror=implicit-fallthrough=]
    /kisskb/src/include/linux/compat.h:496:51: error: this statement may fall through [-Werror=implicit-fallthrough=]
  Failed: powerpc-next/ppc64le_defconfig/powerpc-gcc8		(http://kisskb.ellerman.id.au/kisskb/buildresult/13542777/log/)
    /kisskb/src/include/linux/signal.h:180:22: error: this statement may fall through [-Werror=implicit-fallthrough=]
  Failed: powerpc-next/powernv_defconfig/powerpc-gcc8		(http://kisskb.ellerman.id.au/kisskb/buildresult/13542776/log/)
    /kisskb/src/include/linux/signal.h:180:22: error: this statement may fall through [-Werror=implicit-fallthrough=]

cheers