From: Joerg Roedel Date: Wed, 17 Dec 2008 15:36:44 +0000 (+0100) Subject: AMD IOMMU: panic if completion wait loop fails X-Git-Tag: v3.0~11545^2~2^2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=84df81759590ad16b0024cf46b3423cca76b2e07;p=platform%2Fkernel%2Flinux-amlogic.git AMD IOMMU: panic if completion wait loop fails Impact: prevents data corruption after a failed completion wait loop Signed-off-by: Joerg Roedel --- diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c index a7b6dec..0a60d60 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c @@ -235,8 +235,9 @@ static int iommu_completion_wait(struct amd_iommu *iommu) status &= ~MMIO_STATUS_COM_WAIT_INT_MASK; writel(status, iommu->mmio_base + MMIO_STATUS_OFFSET); - if (unlikely((i == EXIT_LOOP_COUNT) && printk_ratelimit())) - printk(KERN_WARNING "AMD IOMMU: Completion wait loop failed\n"); + if (unlikely(i == EXIT_LOOP_COUNT)) + panic("AMD IOMMU: Completion wait loop failed\n"); + out: spin_unlock_irqrestore(&iommu->lock, flags);