From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751482AbaHSVBH (ORCPT ); Tue, 19 Aug 2014 17:01:07 -0400 Received: from mail-yk0-f181.google.com ([209.85.160.181]:52124 "EHLO mail-yk0-f181.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750936AbaHSVBG (ORCPT ); Tue, 19 Aug 2014 17:01:06 -0400 From: Pranith Kumar To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , linuxppc-dev@lists.ozlabs.org (open list:LINUX FOR POWERPC...), linux-kernel@vger.kernel.org (open list) Cc: Andew Morton Subject: [PATCH] powerpc: Fix build failure when MEMORY_HOTPLUG=y Date: Tue, 19 Aug 2014 17:01:05 -0400 Message-Id: <1408482065-18457-1-git-send-email-bobby.prani@gmail.com> X-Mailer: git-send-email 1.9.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org ARCH_ENABLE_MEMORY_HOTPLUG is enabled by default for powerpc. This causes build failures when SPARSEMEM=n as memory hotplug needs definition which are defined only when SPARSEMEM=y. The error is as follows: arch/powerpc/platforms/pseries/hotplug-memory.c:27:31: error: 'SECTION_SIZE_BITS' undeclared (first use in this function) arch/powerpc/platforms/pseries/hotplug-memory.c:27:31: note: each undeclared identifier is reported only once for each function it appears in arch/powerpc/platforms/pseries/hotplug-memory.c: In function 'pseries_remove_memblock': arch/powerpc/platforms/pseries/hotplug-memory.c:98:34: error: 'SECTION_SIZE_BITS' undeclared (first use in this function) make[2]: *** [arch/powerpc/platforms/pseries/hotplug-memory.o] Error 1 Signed-off-by: Pranith Kumar CC: Andew Morton --- arch/powerpc/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 9c1aa77..da16ffe 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -383,6 +383,7 @@ config ARCH_CPU_PROBE_RELEASE config ARCH_ENABLE_MEMORY_HOTPLUG def_bool y + depends on SPARSEMEM config ARCH_HAS_WALK_MEMORY def_bool y -- 1.9.1