powerpc: Always initialize input array when calling epapr_hypercall()

[Michael Ellerman]

On Thu, 2017-09-28 at 13:33:39 UTC, Seth Forshee wrote:
> Several callers to epapr_hypercall() pass an uninitialized stack
> allocated array for the input arguments, presumably because they
> have no input arguments. However this can produce errors like
> this one
> 
>  arch/powerpc/include/asm/epapr_hcalls.h:470:42: error: 'in' may be used uninitialized in this function [-Werror=maybe-uninitialized]
>   unsigned long register r3 asm("r3") = in[0];
>                                         ~~^~~
> 
> Fix callers to this function to always zero-initialize the input
> arguments array to prevent this.
> 
> Signed-off-by: Seth Forshee <seth.forshee at canonical.com>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/186b8f1587c79c2fa04bfa392fdf08

cheers