X-Git-Url: https://git.kernelconcepts.de/?a=blobdiff_plain;f=drivers%2Fiommu%2Farm-smmu.c;h=181c9ba929cdfa131123639862cdefb2587c8cf6;hb=8b7312c3cfa25ad3901b6446ea55a743baf2b432;hp=f417e89e1e7e47e812fef6e16faf9a19432ce0b4;hpb=92396e78d339e1ba8c50e69fee96197a56d3911a;p=karo-tx-linux.git

diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index f417e89e1e7e..181c9ba929cd 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -377,6 +377,7 @@ struct arm_smmu_cfg {
 	u32				cbar;
 	pgd_t				*pgd;
 };
+#define INVALID_IRPTNDX			0xff
 
 #define ARM_SMMU_CB_ASID(cfg)		((cfg)->cbndx)
 #define ARM_SMMU_CB_VMID(cfg)		((cfg)->cbndx + 1)
@@ -840,7 +841,7 @@ static int arm_smmu_init_domain_context(struct iommu_domain *domain,
 	if (IS_ERR_VALUE(ret)) {
 		dev_err(smmu->dev, "failed to request context IRQ %d (%u)\n",
 			root_cfg->irptndx, irq);
-		root_cfg->irptndx = -1;
+		root_cfg->irptndx = INVALID_IRPTNDX;
 		goto out_free_context;
 	}
 
@@ -869,7 +870,7 @@ static void arm_smmu_destroy_domain_context(struct iommu_domain *domain)
 	writel_relaxed(0, cb_base + ARM_SMMU_CB_SCTLR);
 	arm_smmu_tlb_inv_context(root_cfg);
 
-	if (root_cfg->irptndx != -1) {
+	if (root_cfg->irptndx != INVALID_IRPTNDX) {
 		irq = smmu->irqs[smmu->num_global_irqs + root_cfg->irptndx];
 		free_irq(irq, domain);
 	}
@@ -1857,8 +1858,6 @@ static int arm_smmu_device_dt_probe(struct platform_device *pdev)
 		goto out_put_parent;
 	}
 
-	arm_smmu_device_reset(smmu);
-
 	for (i = 0; i < smmu->num_global_irqs; ++i) {
 		err = request_irq(smmu->irqs[i],
 				  arm_smmu_global_fault,
@@ -1876,6 +1875,8 @@ static int arm_smmu_device_dt_probe(struct platform_device *pdev)
 	spin_lock(&arm_smmu_devices_lock);
 	list_add(&smmu->list, &arm_smmu_devices);
 	spin_unlock(&arm_smmu_devices_lock);
+
+	arm_smmu_device_reset(smmu);
 	return 0;
 
 out_free_irqs:
@@ -1966,10 +1967,10 @@ static int __init arm_smmu_init(void)
 		return ret;
 
 	/* Oh, for a proper bus abstraction */
-	if (!iommu_present(&platform_bus_type));
+	if (!iommu_present(&platform_bus_type))
 		bus_set_iommu(&platform_bus_type, &arm_smmu_ops);
 
-	if (!iommu_present(&amba_bustype));
+	if (!iommu_present(&amba_bustype))
 		bus_set_iommu(&amba_bustype, &arm_smmu_ops);
 
 	return 0;