Merge tag 'iommu-updates-v4.13' of git://git.kernel.org/pub/scm/linux/kernel/git...

[karo-tx-linux.git] / drivers / iommu / intel-iommu.c

diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 1e95475883cd179f618423391616604ad47718a7..687f18f65cea58d2a5f22725a2c36c78621dd3cd 100644 (file)
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -481,7 +481,7 @@ struct deferred_flush_data {
        struct deferred_flush_table *tables;
 };
 
-DEFINE_PER_CPU(struct deferred_flush_data, deferred_flush);
+static DEFINE_PER_CPU(struct deferred_flush_data, deferred_flush);
 
 /* bitmap for indexing intel_iommus */
 static int g_num_of_iommus;
@@ -2390,7 +2390,7 @@ static struct dmar_domain *find_domain(struct device *dev)
 
        /* No lock here, assumes no domain exit in normal case */
        info = dev->archdata.iommu;
-       if (info)
+       if (likely(info))
                return info->domain;
        return NULL;
 }
@@ -3478,7 +3478,7 @@ static unsigned long intel_alloc_iova(struct device *dev,
        return iova_pfn;
 }
 
-static struct dmar_domain *__get_valid_domain_for_dev(struct device *dev)
+static struct dmar_domain *get_valid_domain_for_dev(struct device *dev)
 {
        struct dmar_domain *domain, *tmp;
        struct dmar_rmrr_unit *rmrr;
@@ -3525,18 +3525,6 @@ out:
        return domain;
 }
 
-static inline struct dmar_domain *get_valid_domain_for_dev(struct device *dev)
-{
-       struct device_domain_info *info;
-
-       /* No lock here, assumes no domain exit in normal case */
-       info = dev->archdata.iommu;
-       if (likely(info))
-               return info->domain;
-
-       return __get_valid_domain_for_dev(dev);
-}
-
 /* Check if the dev needs to go through non-identity map and unmap process.*/
 static int iommu_no_mapping(struct device *dev)
 {
@@ -3725,10 +3713,8 @@ static void add_unmap(struct dmar_domain *dom, unsigned long iova_pfn,
        struct intel_iommu *iommu;
        struct deferred_flush_entry *entry;
        struct deferred_flush_data *flush_data;
-       unsigned int cpuid;
 
-       cpuid = get_cpu();
-       flush_data = per_cpu_ptr(&deferred_flush, cpuid);
+       flush_data = raw_cpu_ptr(&deferred_flush);
 
        /* Flush all CPUs' entries to avoid deferring too much.  If
         * this becomes a bottleneck, can just flush us, and rely on
@@ -3761,8 +3747,6 @@ static void add_unmap(struct dmar_domain *dom, unsigned long iova_pfn,
        }
        flush_data->size++;
        spin_unlock_irqrestore(&flush_data->lock, flags);
-
-       put_cpu();
 }
 
 static void intel_unmap(struct device *dev, dma_addr_t dev_addr, size_t size)
@@ -3973,7 +3957,7 @@ static int intel_mapping_error(struct device *dev, dma_addr_t dma_addr)
        return !dma_addr;
 }
 
-struct dma_map_ops intel_dma_ops = {
+const struct dma_map_ops intel_dma_ops = {
        .alloc = intel_alloc_coherent,
        .free = intel_free_coherent,
        .map_sg = intel_map_sg,