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Date: Tue, 29 Sep 2015 15:50:34 +0200 From: Joerg Roedel <joro@...tes.org> To: Baoquan He <bhe@...hat.com> Cc: iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH 1/2] iommu/vt-d: break the for loop if an empty ir_ioapic entry found 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@...hat.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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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