linux-kernel - [PATCH 6/7] iommu, irq: alloc irq_desc for dmar

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Date:	Thu, 26 Jan 2012 23:25:52 -0800
From:	Yinghai Lu <yinghai@...nel.org>
To:	Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...e.hu>,
	"H. Peter Anvin" <hpa@...or.com>
Cc:	linux-kernel@...r.kernel.org, Yinghai Lu <yinghai@...nel.org>
Subject: [PATCH 6/7] iommu, irq: alloc irq_desc for dmar_msi with local node

Also fix the return value checking problem.

create_irq() will return -1 when fail to allocate.
create_irq_nr() will return 0 when fail to allocate.

here only check !irq, so need to change it to create_irq_nr.

Signed-off-by: Yinghai Lu <yinghai@...nel.org>
---
 drivers/iommu/dmar.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/iommu/dmar.c b/drivers/iommu/dmar.c
index 35c1e17..c6e9b1a 100644
--- a/drivers/iommu/dmar.c
+++ b/drivers/iommu/dmar.c
@@ -1221,7 +1221,7 @@ int dmar_set_interrupt(struct intel_iommu *iommu)
 	if (iommu->irq)
 		return 0;
 
-	irq = create_irq();
+	irq = create_irq_nr(0, iommu->node);
 	if (!irq) {
 		printk(KERN_ERR "IOMMU: no free vectors\n");
 		return -EINVAL;
-- 
1.7.7

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