From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga03.intel.com ([134.134.136.65]:2053 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756722AbaKUDUM (ORCPT ); Thu, 20 Nov 2014 22:20:12 -0500 From: Jiang Liu To: Thomas Gleixner , Ingo Molnar , Grant Likely , Marc Zyngier , Yijing Wang , Yingjoe Chen , Suravee Suthikulpanit , Borislav Petkov , "H. Peter Anvin" , Benjamin Herrenschmidt , Matthias Brugger Cc: Jiang Liu , Tony Luck , linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [Patch irqdomain: Enhance irq_domain_free_irqs_common() to support parentless irqdomain Date: Fri, 21 Nov 2014 11:23:26 +0800 Message-Id: <1416540206-18103-1-git-send-email-jiang.liu@linux.intel.com> Sender: linux-pci-owner@vger.kernel.org List-ID: Originally irq_domain_free_irqs_common() is designed to be used by irqdomains with parent. But there are desires to reuse for parentless irqdomains for code reduction. So check domain->parent before invoking irq_domain_free_irqs_parent(). Signed-off-by: Jiang Liu --- Hi Thomas, This patch applies to tip/irq/irqdomain, it helps to reduce code size on ARM. Seems we still have chance to merge it into tip/irq/irqdomain:) Regards! Gerry --- kernel/irq/irqdomain.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c index 029acf11efed..0449d2869e17 100644 --- a/kernel/irq/irqdomain.c +++ b/kernel/irq/irqdomain.c @@ -975,7 +975,8 @@ void irq_domain_free_irqs_common(struct irq_domain *domain, unsigned int virq, if (irq_data) irq_domain_reset_irq_data(irq_data); } - irq_domain_free_irqs_parent(domain, virq, nr_irqs); + if (domain->parent) + irq_domain_free_irqs_parent(domain, virq, nr_irqs); } /** -- 1.7.10.4