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SubjectRe: [tip:x86/build] x86/build: Remove -Wno-sign-compare

* Ingo Molnar <mingo@kernel.org> wrote:

> Here's the full list of warnings for allmod64:
>
> make bzImage:
>
> include/linux/blkdev.h:624:26: warning: switch condition has boolean value [-Wswitch-bool]
> ./arch/x86/include/asm/qspinlock.h:28:2: warning: implicit declaration of function ?pv_queued_spin_lock_slowpath? [-Wimplicit-function-declaration]
> ./arch/x86/include/asm/qspinlock.h:33:2: warning: implicit declaration of function ?pv_queued_spin_unlock? [-Wimplicit-function-declaration]
> ./arch/x86/include/asm/qspinlock.h:28:2: warning: implicit declaration of function ?pv_queued_spin_lock_slowpath? [-Wimplicit-function-declaration]
> ./arch/x86/include/asm/qspinlock.h:33:2: warning: implicit declaration of function ?pv_queued_spin_unlock? [-Wimplicit-function-declaration]
> ./arch/x86/include/asm/qspinlock.h:28:2: warning: implicit declaration of function ?pv_queued_spin_lock_slowpath? [-Wimplicit-function-declaration]
> ./arch/x86/include/asm/qspinlock.h:33:2: warning: implicit declaration of function ?pv_queued_spin_unlock? [-Wimplicit-function-declaration]
> ./arch/x86/include/asm/qspinlock.h:28:2: warning: implicit declaration of function ?pv_queued_spin_lock_slowpath? [-Wimplicit-function-declaration]
> ./arch/x86/include/asm/qspinlock.h:33:2: warning: implicit declaration of function ?pv_queued_spin_unlock? [-Wimplicit-function-declaration]

And that comes from tip:locking/core, but those warnings do not show
up with GCC 4.9.2: so it's either a GCC 5.0.1 bug, or we missed
something with the WIP queued pv spinlocks changes that newer GCC is
able to notice.

Thanks,

Ingo


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