UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

sparseirq: fix intr-remap with dyn_array/nr_irqs changes] 

In irq_2_iommu_alloc() and set_irte_irq(), irq_to_desc or
irq_2_iommu pointers may not be allocated. So use the routines
which will allocate them if they are not already allocated.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Suresh Siddha 2008-08-20 17:22:51 -07:00 committed by Ingo Molnar
parent 0c425cec64
commit 7ddfb650c7
1 changed files with 6 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/pci/intr_remapping.c
View File

@ -76,9 +76,10 @@ static struct irq_2_iommu *irq_2_iommu_alloc(unsigned int irq)
struct irq_desc *desc;
struct irq_2_iommu *irq_iommu;
desc = irq_to_desc(irq);
BUG_ON(!desc);
/*
* alloc irq desc if not allocated already.
*/
desc = irq_to_desc_alloc(irq);
irq_iommu = desc->irq_2_iommu;
@ -255,11 +256,8 @@ int set_irte_irq(int irq, struct intel_iommu *iommu, u16 index, u16 subhandle)
struct irq_2_iommu *irq_iommu;
spin_lock(&irq_2_ir_lock);
irq_iommu = valid_irq_2_iommu(irq);
if (!irq_iommu) {
spin_unlock(&irq_2_ir_lock);
return -1;
}
irq_iommu = irq_2_iommu_alloc(irq);
irq_iommu->iommu = iommu;
irq_iommu->irte_index = index;