lkml.org 
[lkml]   [2014]   [Feb]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v5 10/33] iommu, irq: Allocate irq_desc for dmar_msi with local node


On 2014/1/3 8:05, Yinghai Lu wrote:
> iommu irq's irq_desc should be on local node ram.
>
> 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 use create_irq_nr instead.
>
> -v2: According to Sebastian, add cc to stable.
>
> Signed-off-by: Yinghai Lu <yinghai@kernel.org>
> Cc: Joerg Roedel <joro@8bytes.org>
> Cc: Donald Dutile <ddutile@redhat.com>
> Acked-by: Donald Dutile <ddutile@redhat.com>
> Cc: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
> Cc: stable@vger.kernel.org
> ---
> drivers/iommu/dmar.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/iommu/dmar.c b/drivers/iommu/dmar.c
> index 8b452c9..f4eaa50 100644
> --- a/drivers/iommu/dmar.c
> +++ b/drivers/iommu/dmar.c
> @@ -1277,7 +1277,7 @@ int dmar_set_interrupt(struct intel_iommu *iommu)
> if (iommu->irq)
> return 0;
>
> - irq = create_irq();
> + irq = create_irq_nr(0, iommu->node);
Hi Yinghai,
How about create_irq_nrq(1, iommu->node) here to clearly state
that 0 is not a valid irq number for dmar here?
Thanks!
Gerry

> if (!irq) {
> pr_err("IOMMU: no free vectors\n");
> return -EINVAL;
>


\
 
 \ /
  Last update: 2014-02-21 09:01    [W:0.856 / U:1.884 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site