[PATCH] arm64: cpufeature: fix unused function warning

[Will Deacon]

On Thu, Dec 03, 2020 at 11:32:11PM +0100, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd at arndb.de>
> 
> The __system_matches_cap() function is now only used in an #ifdef
> section:
> 
> arch/arm64/kernel/cpufeature.c:2649:13: error: unused function '__system_matches_cap' [-Werror,-Wunused-function]
> 
> Move it into that #ifdef section.
> 
> Fixes: 7cf283c7bd62 ("arm64: uaccess: remove redundant PAN toggling")
> Signed-off-by: Arnd Bergmann <arnd at arndb.de>
> ---
>  arch/arm64/kernel/cpufeature.c | 36 ++++++++++++++++------------------
>  1 file changed, 17 insertions(+), 19 deletions(-)

Acked-by: Will Deacon <will at kernel.org>

We can probably go further and remove the helper altogether as I don't
think it really helps has_generic_auth(), but this should fix the warning.

Will