From: Andreas Herrmann <andreas.herrmann@calxeda.com>
Date: Tue, 1 Oct 2013 12:39:08 +0000 (+0100)
Subject: iommu/arm-smmu: Print context fault information
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=2ef0f03120ea2ad64d0e70f032a58e6c13603cdc;p=linux-beck.git

iommu/arm-smmu: Print context fault information

Print context fault information when the fault was not handled by
report_iommu_fault.

Signed-off-by: Andreas Herrmann <andreas.herrmann@calxeda.com>
[will: fixed string formatting]
Signed-off-by: Will Deacon <will.deacon@arm.com>
---

diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index e4693cee5f2c..a984e08eb084 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -590,6 +590,9 @@ static irqreturn_t arm_smmu_context_fault(int irq, void *dev)
 		ret = IRQ_HANDLED;
 		resume = RESUME_RETRY;
 	} else {
+		dev_err_ratelimited(smmu->dev,
+		    "Unhandled context fault: iova=0x%08lx, fsynr=0x%x, cb=%d\n",
+		    iova, fsynr, root_cfg->cbndx);
 		ret = IRQ_NONE;
 		resume = RESUME_TERMINATE;
 	}