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>

1 files changed, 3 insertions, 0 deletions

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;
         }