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iommu: Add for_each_group_device()
Convenience macro to iterate over every struct group_device in the group. Replace all open coded list_for_each_entry's with this macro. Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Tested-by: Niklas Schnelle <schnelle@linux.ibm.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/2-v5-1b99ae392328+44574-iommu_err_unwind_jgg@nvidia.com Signed-off-by: Joerg Roedel <jroedel@suse.de>
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@ -254,6 +254,7 @@ ForEachMacros:
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- 'for_each_free_mem_range'
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- 'for_each_free_mem_range_reverse'
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- 'for_each_func_rsrc'
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- 'for_each_group_device'
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- 'for_each_group_evsel'
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- 'for_each_group_member'
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- 'for_each_hstate'
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@ -68,6 +68,10 @@ struct group_device {
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char *name;
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};
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/* Iterate over each struct group_device in a struct iommu_group */
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#define for_each_group_device(group, pos) \
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list_for_each_entry(pos, &(group)->devices, list)
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struct iommu_group_attribute {
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struct attribute attr;
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ssize_t (*show)(struct iommu_group *group, char *buf);
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@ -468,7 +472,7 @@ __iommu_group_remove_device(struct iommu_group *group, struct device *dev)
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struct group_device *device;
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lockdep_assert_held(&group->mutex);
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list_for_each_entry(device, &group->devices, list) {
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for_each_group_device(group, device) {
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if (device->dev == dev) {
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list_del(&device->list);
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return device;
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@ -707,7 +711,7 @@ int iommu_get_group_resv_regions(struct iommu_group *group,
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int ret = 0;
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mutex_lock(&group->mutex);
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list_for_each_entry(device, &group->devices, list) {
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for_each_group_device(group, device) {
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struct list_head dev_resv_regions;
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/*
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@ -1131,7 +1135,7 @@ static int __iommu_group_for_each_dev(struct iommu_group *group, void *data,
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struct group_device *device;
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int ret = 0;
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list_for_each_entry(device, &group->devices, list) {
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for_each_group_device(group, device) {
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ret = fn(device->dev, data);
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if (ret)
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break;
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@ -1935,7 +1939,7 @@ bool iommu_group_has_isolated_msi(struct iommu_group *group)
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bool ret = true;
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mutex_lock(&group->mutex);
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list_for_each_entry(group_dev, &group->devices, list)
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for_each_group_device(group, group_dev)
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ret &= msi_device_has_isolated_msi(group_dev->dev);
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mutex_unlock(&group->mutex);
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return ret;
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@ -3243,7 +3247,7 @@ static int __iommu_set_group_pasid(struct iommu_domain *domain,
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struct group_device *device;
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int ret = 0;
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list_for_each_entry(device, &group->devices, list) {
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for_each_group_device(group, device) {
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ret = domain->ops->set_dev_pasid(domain, device->dev, pasid);
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if (ret)
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break;
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@ -3258,7 +3262,7 @@ static void __iommu_remove_group_pasid(struct iommu_group *group,
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struct group_device *device;
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const struct iommu_ops *ops;
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list_for_each_entry(device, &group->devices, list) {
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for_each_group_device(group, device) {
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ops = dev_iommu_ops(device->dev);
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ops->remove_dev_pasid(device->dev, pasid);
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}
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