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Message-Id: <1376647687-20550-3-git-send-email-weiyang@linux.vnet.ibm.com> Date: Fri, 16 Aug 2013 18:08:07 +0800 From: Wei Yang <weiyang@...ux.vnet.ibm.com> To: linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org Cc: aik@...abs.ru, benh@....ibm.com, paulus@....ibm.com, Wei Yang <weiyang@...ux.vnet.ibm.com> Subject: [PATCH 2/2] powerpc/iommu: check dev->iommu_group before remove a device from iommu_group --- arch/powerpc/kernel/iommu.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c index b20ff17..5abf7c3 100644 --- a/arch/powerpc/kernel/iommu.c +++ b/arch/powerpc/kernel/iommu.c @@ -1149,7 +1149,8 @@ static int iommu_bus_notifier(struct notifier_block *nb, case BUS_NOTIFY_ADD_DEVICE: return iommu_add_device(dev); case BUS_NOTIFY_DEL_DEVICE: - iommu_del_device(dev); + if (dev->iommu_group) + iommu_del_device(dev); return 0; default: return 0; -- 1.7.5.4 -- 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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