iommu/arm-smmu: Drop devm_free_irq when driver detach

[linux-2.6-block.git] / drivers / iommu / arm-smmu.c

diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index 4f49fe29f2029ad0f1fdc4f7015ed0fa13e7c2bf..069b2ea89113fb4a4c8e9c27e068a1e43c5fbef9 100644 (file)
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -686,8 +686,7 @@ static struct iommu_gather_ops arm_smmu_gather_ops = {
 
 static irqreturn_t arm_smmu_context_fault(int irq, void *dev)
 {
-       int flags, ret;
-       u32 fsr, fsynr, resume;
+       u32 fsr, fsynr;
        unsigned long iova;
        struct iommu_domain *domain = dev;
        struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain);
@@ -701,34 +700,15 @@ static irqreturn_t arm_smmu_context_fault(int irq, void *dev)
        if (!(fsr & FSR_FAULT))
                return IRQ_NONE;
 
-       if (fsr & FSR_IGN)
-               dev_err_ratelimited(smmu->dev,
-                                   "Unexpected context fault (fsr 0x%x)\n",
-                                   fsr);
-
        fsynr = readl_relaxed(cb_base + ARM_SMMU_CB_FSYNR0);
-       flags = fsynr & FSYNR0_WNR ? IOMMU_FAULT_WRITE : IOMMU_FAULT_READ;
-
        iova = readq_relaxed(cb_base + ARM_SMMU_CB_FAR);
-       if (!report_iommu_fault(domain, smmu->dev, iova, flags)) {
-               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, cfg->cbndx);
-               ret = IRQ_NONE;
-               resume = RESUME_TERMINATE;
-       }
-
-       /* Clear the faulting FSR */
-       writel(fsr, cb_base + ARM_SMMU_CB_FSR);
 
-       /* Retry or terminate any stalled transactions */
-       if (fsr & FSR_SS)
-               writel_relaxed(resume, cb_base + ARM_SMMU_CB_RESUME);
+       dev_err_ratelimited(smmu->dev,
+       "Unhandled context fault: fsr=0x%x, iova=0x%08lx, fsynr=0x%x, cb=%d\n",
+                           fsr, iova, fsynr, cfg->cbndx);
 
-       return ret;
+       writel(fsr, cb_base + ARM_SMMU_CB_FSR);
+       return IRQ_HANDLED;
 }
 
 static irqreturn_t arm_smmu_global_fault(int irq, void *dev)
@@ -837,7 +817,7 @@ static void arm_smmu_init_context_bank(struct arm_smmu_domain *smmu_domain,
        }
 
        /* SCTLR */
-       reg = SCTLR_CFCFG | SCTLR_CFIE | SCTLR_CFRE | SCTLR_M | SCTLR_EAE_SBOP;
+       reg = SCTLR_CFIE | SCTLR_CFRE | SCTLR_M | SCTLR_EAE_SBOP;
        if (stage1)
                reg |= SCTLR_S1_ASIDPNE;
 #ifdef __BIG_ENDIAN
@@ -2018,7 +1998,6 @@ out_put_masters:
 
 static int arm_smmu_device_remove(struct platform_device *pdev)
 {
-       int i;
        struct device *dev = &pdev->dev;
        struct arm_smmu_device *curr, *smmu = NULL;
        struct rb_node *node;
@@ -2045,9 +2024,6 @@ static int arm_smmu_device_remove(struct platform_device *pdev)
        if (!bitmap_empty(smmu->context_map, ARM_SMMU_MAX_CBS))
                dev_err(dev, "removing device with active domains!\n");
 
-       for (i = 0; i < smmu->num_global_irqs; ++i)
-               devm_free_irq(smmu->dev, smmu->irqs[i], smmu);
-
        /* Turn the thing off */
        writel(sCR0_CLIENTPD, ARM_SMMU_GR0_NS(smmu) + ARM_SMMU_GR0_sCR0);
        return 0;