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| author | Lu Baolu <baolu.lu@linux.intel.com> | 2023-01-10 10:54:08 +0800 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2023-01-13 16:39:18 +0100 |
| commit | 8f9930fa016134ea07db4775ec596b16c3d03f05 (patch) | |
| tree | 1463d22347c5e80ed4bee1cd14dd75a38a468142 /drivers/iommu | |
| parent | dd8a25c557e109f868430bd2e3e8f394cb40eaa7 (diff) | |
| download | linux-8f9930fa016134ea07db4775ec596b16c3d03f05.tar.gz linux-8f9930fa016134ea07db4775ec596b16c3d03f05.tar.bz2 linux-8f9930fa016134ea07db4775ec596b16c3d03f05.zip | |
iommu: Remove detach_dev callback
The detach_dev callback of domain ops is not called in the IOMMU core.
Remove this callback to avoid dead code. The trace event for detaching
domain from device is removed accordingly.
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20230110025408.667767-6-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/iommu-traces.c | 1 | ||||
| -rw-r--r-- | drivers/iommu/iommu.c | 36 |
2 files changed, 4 insertions, 33 deletions
diff --git a/drivers/iommu/iommu-traces.c b/drivers/iommu/iommu-traces.c index 1e9ca7789de1..23416bf76df9 100644 --- a/drivers/iommu/iommu-traces.c +++ b/drivers/iommu/iommu-traces.c @@ -18,7 +18,6 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(remove_device_from_group); /* iommu_device_event */ EXPORT_TRACEPOINT_SYMBOL_GPL(attach_device_to_domain); -EXPORT_TRACEPOINT_SYMBOL_GPL(detach_device_from_domain); /* iommu_map_unmap */ EXPORT_TRACEPOINT_SYMBOL_GPL(map); diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 85ae20c8ff5e..9135540d7d59 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -2045,13 +2045,6 @@ int iommu_deferred_attach(struct device *dev, struct iommu_domain *domain) return 0; } -static void __iommu_detach_device(struct iommu_domain *domain, - struct device *dev) -{ - domain->ops->detach_dev(domain, dev); - trace_detach_device_from_domain(dev); -} - void iommu_detach_device(struct iommu_domain *domain, struct device *dev) { struct iommu_group *group; @@ -2156,15 +2149,6 @@ int iommu_attach_group(struct iommu_domain *domain, struct iommu_group *group) } EXPORT_SYMBOL_GPL(iommu_attach_group); -static int iommu_group_do_detach_device(struct device *dev, void *data) -{ - struct iommu_domain *domain = data; - - __iommu_detach_device(domain, dev); - - return 0; -} - static int iommu_group_do_set_platform_dma(struct device *dev, void *data) { const struct iommu_ops *ops = dev_iommu_ops(dev); @@ -2184,25 +2168,13 @@ static int __iommu_group_set_domain(struct iommu_group *group, return 0; /* - * New drivers should support default domains and so the detach_dev() op - * will never be called. Otherwise the NULL domain represents some + * New drivers should support default domains, so set_platform_dma() + * op will never be called. Otherwise the NULL domain represents some * platform specific behavior. */ if (!new_domain) { - struct group_device *grp_dev; - - grp_dev = list_first_entry(&group->devices, - struct group_device, list); - - if (dev_iommu_ops(grp_dev->dev)->set_platform_dma_ops) - __iommu_group_for_each_dev(group, NULL, - iommu_group_do_set_platform_dma); - else if (group->domain->ops->detach_dev) - __iommu_group_for_each_dev(group, group->domain, - iommu_group_do_detach_device); - else - WARN_ON_ONCE(1); - + __iommu_group_for_each_dev(group, NULL, + iommu_group_do_set_platform_dma); group->domain = NULL; return 0; } |