iommu: Remove iommu_callback_data

The iommu_callback_data is not used anywhere, remove it to make
the code more concise.

Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index 33a982e..1164b99 100644 (file)
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -45,10 +45,6 @@ static unsigned int iommu_def_domain_type = IOMMU_DOMAIN_DMA;
 #endif
 static bool iommu_dma_strict __read_mostly = true;
 
-struct iommu_callback_data {
-       const struct iommu_ops *ops;
-};
-
 struct iommu_group {
        struct kobject kobj;
        struct kobject *devices_kobj;
@@ -1215,9 +1211,6 @@ static int iommu_bus_init(struct bus_type *bus, const struct iommu_ops *ops)
 {
        int err;
        struct notifier_block *nb;
-       struct iommu_callback_data cb = {
-               .ops = ops,
-       };
 
        nb = kzalloc(sizeof(struct notifier_block), GFP_KERNEL);
        if (!nb)
@@ -1229,7 +1222,7 @@ static int iommu_bus_init(struct bus_type *bus, const struct iommu_ops *ops)
        if (err)
                goto out_free;
 
-       err = bus_for_each_dev(bus, NULL, &cb, add_iommu_group);
+       err = bus_for_each_dev(bus, NULL, NULL, add_iommu_group);
        if (err)
                goto out_err;
 
@@ -1238,7 +1231,7 @@ static int iommu_bus_init(struct bus_type *bus, const struct iommu_ops *ops)
 
 out_err:
        /* Clean up */
-       bus_for_each_dev(bus, NULL, &cb, remove_iommu_group);
+       bus_for_each_dev(bus, NULL, NULL, remove_iommu_group);
        bus_unregister_notifier(bus, nb);
 
 out_free: