diff options
| -rw-r--r-- | drivers/iommu/arm-smmu.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c index da8af45634a..3a595bb5b82 100644 --- a/drivers/iommu/arm-smmu.c +++ b/drivers/iommu/arm-smmu.c @@ -305,7 +305,7 @@ #define FSR_IGN (FSR_AFF | FSR_ASF | FSR_TLBMCF | \ FSR_TLBLKF) #define FSR_FAULT (FSR_MULTI | FSR_SS | FSR_UUT | \ - FSR_EF | FSR_PF | FSR_TF) + FSR_EF | FSR_PF | FSR_TF | FSR_IGN) #define FSYNR0_WNR (1 << 4) @@ -590,6 +590,9 @@ static irqreturn_t arm_smmu_global_fault(int irq, void *dev) void __iomem *gr0_base = ARM_SMMU_GR0(smmu); gfsr = readl_relaxed(gr0_base + ARM_SMMU_GR0_sGFSR); + if (!gfsr) + return IRQ_NONE; + gfsynr0 = readl_relaxed(gr0_base + ARM_SMMU_GR0_sGFSYNR0); gfsynr1 = readl_relaxed(gr0_base + ARM_SMMU_GR0_sGFSYNR1); gfsynr2 = readl_relaxed(gr0_base + ARM_SMMU_GR0_sGFSYNR2); @@ -601,7 +604,7 @@ static irqreturn_t arm_smmu_global_fault(int irq, void *dev) gfsr, gfsynr0, gfsynr1, gfsynr2); writel(gfsr, gr0_base + ARM_SMMU_GR0_sGFSR); - return IRQ_NONE; + return IRQ_HANDLED; } static void arm_smmu_init_context_bank(struct arm_smmu_domain *smmu_domain) |