From: Yinghai Lu <yinghai@kernel.org>
To: Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@elte.hu>,
"H. Peter Anvin" <hpa@zytor.com>,
Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
Yinghai Lu <yinghai@kernel.org>
Subject: [PATCH 06/13] genirq: bail out early in free_desc()
Date: Thu, 23 Feb 2012 19:48:52 -0800 [thread overview]
Message-ID: <1330055339-11662-7-git-send-email-yinghai@kernel.org> (raw)
In-Reply-To: <1330055339-11662-1-git-send-email-yinghai@kernel.org>
So we can use irq_free_descs to clear allocated_irqs bits for
preserved irqs.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
---
kernel/irq/irqdesc.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c
index b1d6e51..da82457 100644
--- a/kernel/irq/irqdesc.c
+++ b/kernel/irq/irqdesc.c
@@ -169,6 +169,9 @@ static void free_desc(unsigned int irq)
{
struct irq_desc *desc = irq_to_desc(irq);
+ if (!desc)
+ return;
+
unregister_irq_proc(irq, desc);
mutex_lock(&sparse_irq_lock);
--
1.7.7
next prev parent reply other threads:[~2012-02-24 3:48 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-24 3:48 [PATCH 00/13] x86, irq: support ioapic device hotplug for x86 Yinghai Lu
2012-02-24 3:48 ` [PATCH 01/13] x86, irq: Convert irq_2_pin list to generic list Yinghai Lu
2012-02-24 3:48 ` [PATCH 02/13] genirq: Split __irq_reserve_irqs from irq_alloc_descs Yinghai Lu
2012-02-24 3:48 ` [PATCH 03/13] x86, irq: Add realloc_irq_and_cfg_at() Yinghai Lu
2012-02-24 3:48 ` [PATCH 04/13] x86, irq: pre-reserve irq range that are used by ioapic Yinghai Lu
2012-02-24 3:48 ` [PATCH 05/13] x86, irq: add ioapic_gsi_to_irq Yinghai Lu
2012-02-24 3:48 ` Yinghai Lu [this message]
2012-02-24 3:48 ` [PATCH 07/13] x86, irq: more strict check for register ioapic Yinghai Lu
2012-02-24 3:48 ` [PATCH 08/13] x86, irq: Make mp_register_ioapic could handle hotadd ioapic Yinghai Lu
2012-02-24 3:48 ` [PATCH 09/13] x86, irq: Add mp_unregister_ioapic could handle hotremove ioapic Yinghai Lu
2012-02-24 3:48 ` [PATCH 10/13] x86, irq: Make ioapics loop code skip blank slot Yinghai Lu
2012-02-24 3:48 ` [PATCH 11/13] x86, acpi, irq: Enable pci device type ioapic hotplug Yinghai Lu
2012-02-24 3:48 ` [PATCH 12/13] PCI: Make sure hotplug ioapic driver get loaded early Yinghai Lu
2012-02-24 3:48 ` [PATCH 13/13] PCI: Disable mem in the ioapic removing path Yinghai Lu
2012-02-24 16:51 ` [PATCH 00/13] x86, irq: support ioapic device hotplug for x86 Jesse Barnes
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