MIPS: c-r4k: Fix Loongson-3's vcache/scache waysize calculation
commit 0be032c1 upstream. If scache.waysize is 0, r4k___flush_cache_all() will do nothing and then cause bugs. BTW, though vcache.waysize isn't being used by now, we also fix its calculation. Signed-off-by: Huacai Chen <chenhc@lemote.com> Cc: John Crispin <john@phrozen.org> Cc: Steven J . Hill <Steven.Hill@caviumnetworks.com> Cc: Fuxin Zhang <zhangfx@lemote.com> Cc: Zhangjin Wu <wuzhangjin@gmail.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/15756/Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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