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pci: intr_remap: Use irq_data 

No need to dereference irq_desc.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
This commit is contained in:
Thomas Gleixner 2010-10-04 16:51:27 +02:00
parent 0e1e367aab
commit a8ef54aeb4
1 changed files with 8 additions and 31 deletions
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39
drivers/pci/intr_remapping.c
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@ -54,45 +54,22 @@ struct irq_2_iommu {
};
#ifdef CONFIG_GENERIC_HARDIRQS
static struct irq_2_iommu *get_one_free_irq_2_iommu(int node)
{
struct irq_2_iommu *iommu;
iommu = kzalloc_node(sizeof(*iommu), GFP_ATOMIC, node);
printk(KERN_DEBUG "alloc irq_2_iommu on node %d\n", node);
return iommu;
}
static struct irq_2_iommu *irq_2_iommu(unsigned int irq)
{
struct irq_desc *desc;
desc = irq_to_desc(irq);
if (WARN_ON_ONCE(!desc))
return NULL;
return desc->irq_2_iommu;
return get_irq_iommu(irq);
}
static struct irq_2_iommu *irq_2_iommu_alloc(unsigned int irq)
{
struct irq_desc *desc;
struct irq_2_iommu *irq_iommu;
struct irq_data *data = irq_get_irq_data(irq);
desc = irq_to_desc(irq);
if (!desc) {
printk(KERN_INFO "can not get irq_desc for %d\n", irq);
return NULL;
}
if (WARN_ONCE(data->irq_2_iommu,
KERN_DEBUG "irq_2_iommu!=NULL irq %u\n", irq))
return data->irq_2_iommu;
irq_iommu = desc->irq_2_iommu;
if (!irq_iommu)
desc->irq_2_iommu = get_one_free_irq_2_iommu(irq_node(irq));
return desc->irq_2_iommu;
data->irq_2_iommu = kzalloc_node(sizeof(*data->irq_2_iommu),
GFP_ATOMIC, data->node);
return data->irq_2_iommu;
}
static void irq_2_iommu_free(unsigned int irq)