From: Jiang Liu <jiang.liu@linux.intel.com>
To: Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>,
Grant Likely <grant.likely@linaro.org>,
Marc Zyngier <marc.zyngier@arm.com>,
Yijing Wang <wangyijing@huawei.com>,
Yingjoe Chen <yingjoe.chen@mediatek.com>,
Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>,
Borislav Petkov <bp@alien8.de>, "H. Peter Anvin" <hpa@zytor.com>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Matthias Brugger <matthias.bgg@gmail.com>
Cc: Jiang Liu <jiang.liu@linux.intel.com>,
Tony Luck <tony.luck@intel.com>,
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 [thread overview]
Message-ID: <1416540206-18103-1-git-send-email-jiang.liu@linux.intel.com> (raw)
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 <jiang.liu@linux.intel.com>
---
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
next reply other threads:[~2014-11-21 3:20 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-21 3:23 Jiang Liu [this message]
2014-11-23 10:33 ` [Patch irqdomain: Enhance irq_domain_free_irqs_common() to support parentless irqdomain Thomas Gleixner
2014-11-23 10:36 ` Thomas Gleixner
2014-11-23 13:28 ` Jiang Liu
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