From mboxrd@z Thu Jan 1 00:00:00 1970 From: Yinghai Lu Subject: [PATCH 05/21] resource: adjust_resource handle resource without parent Date: Mon, 7 May 2012 13:29:50 -0700 Message-ID: <1336422606-4244-6-git-send-email-yinghai@kernel.org> References: <1336422606-4244-1-git-send-email-yinghai@kernel.org> Return-path: Received: from rcsinet15.oracle.com ([148.87.113.117]:50932 "EHLO rcsinet15.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932180Ab2EGUaX (ORCPT ); Mon, 7 May 2012 16:30:23 -0400 In-Reply-To: <1336422606-4244-1-git-send-email-yinghai@kernel.org> Sender: linux-arch-owner@vger.kernel.org List-ID: To: Bjorn Helgaas , Benjamin Herrenschmidt , Tony Luck , David Miller , x86 Cc: Dominik Brodowski , Andrew Morton , Linus Torvalds , Greg Kroah-Hartman , linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, Yinghai Lu for no parent no siling case. Signed-off-by: Yinghai Lu --- kernel/resource.c | 13 ++++++++----- 1 files changed, 8 insertions(+), 5 deletions(-) diff --git a/kernel/resource.c b/kernel/resource.c index 7e8ea66..51ade23 100644 --- a/kernel/resource.c +++ b/kernel/resource.c @@ -722,14 +722,12 @@ int adjust_resource(struct resource *res, resource_size_t start, resource_size_t write_lock(&resource_lock); + if (!parent) + goto skip; + if ((start < parent->start) || (end > parent->end)) goto out; - for (tmp = res->child; tmp; tmp = tmp->sibling) { - if ((tmp->start < start) || (tmp->end > end)) - goto out; - } - if (res->sibling && (res->sibling->start <= end)) goto out; @@ -741,6 +739,11 @@ int adjust_resource(struct resource *res, resource_size_t start, resource_size_t goto out; } +skip: + for (tmp = res->child; tmp; tmp = tmp->sibling) + if ((tmp->start < start) || (tmp->end > end)) + goto out; + res->start = start; res->end = end; result = 0; -- 1.7.7