[PATCH v4 12/12] ARM: KVM: fix warning in mmu.c

[Christoffer Dall]

On Tue, Feb 18, 2014 at 03:27:33PM +0000, Marc Zyngier wrote:
> Compiling with THP enabled leads to the following warning:
> 
> arch/arm/kvm/mmu.c: In function ‘unmap_range’:
> arch/arm/kvm/mmu.c:177:39: warning: ‘pte’ may be used uninitialized in this function [-Wmaybe-uninitialized]
>    if (kvm_pmd_huge(*pmd) || page_empty(pte)) {
>                                         ^
> Code inspection reveals that these two cases are mutually exclusive,
> so GCC is a bit overzealous here. Silence it anyway by initializing
> pte to NULL and testing it later on.
> 
> Signed-off-by: Marc Zyngier <marc.zyngier at arm.com>

Acked-by: Christoffer Dall <christoffer.dall at linaro.org>