From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Yinghai Lu To: Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , Jesse Barnes Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, Yinghai Lu Subject: [PATCH 06/13] genirq: bail out early in free_desc() Date: Thu, 23 Feb 2012 19:48:52 -0800 Message-Id: <1330055339-11662-7-git-send-email-yinghai@kernel.org> In-Reply-To: <1330055339-11662-1-git-send-email-yinghai@kernel.org> References: <1330055339-11662-1-git-send-email-yinghai@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: So we can use irq_free_descs to clear allocated_irqs bits for preserved irqs. Signed-off-by: Yinghai Lu --- 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