Messages in this thread | | | Date | Tue, 29 Sep 2015 15:50:34 +0200 | From | Joerg Roedel <> | Subject | Re: [PATCH 1/2] iommu/vt-d: break the for loop if an empty ir_ioapic entry found |
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On Tue, Sep 29, 2015 at 03:26:08PM +0800, Baoquan He wrote: > No need to continue the loop after it has been found. > > Signed-off-by: Baoquan He <bhe@redhat.com> > --- > drivers/iommu/intel_irq_remapping.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/drivers/iommu/intel_irq_remapping.c b/drivers/iommu/intel_irq_remapping.c > index 9ec4e0d..37b93f5 100644 > --- a/drivers/iommu/intel_irq_remapping.c > +++ b/drivers/iommu/intel_irq_remapping.c > @@ -841,8 +841,10 @@ static int ir_parse_one_ioapic_scope(struct acpi_dmar_device_scope *scope, > if (ir_ioapic[count].iommu == iommu && > ir_ioapic[count].id == scope->enumeration_id) > return 0; > - else if (ir_ioapic[count].iommu == NULL && free == -1) > + else if (ir_ioapic[count].iommu == NULL && free == -1) { > free = count; > + break; > + } > }
The purpose of the loop is also to avoid duplicate entries, so we need to search it till the end, no?
Joerg
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