iommu: Split iommu_group_add_device()
Move the list_add_tail() for the group_device into the critical region that immediately follows in __iommu_probe_device(). This avoids one case of unlocking and immediately re-locking the group->mutex. Consistently make the caller responsible for setting dev->iommu_group, prior patches moved this into iommu_init_device(), make the no-driver path do this in iommu_group_add_device(). This completes making __iommu_group_free_device() and iommu_group_alloc_device() into pair'd functions. Reviewed-by:Lu Baolu <baolu.lu@linux.intel.com> Reviewed-by:
Kevin Tian <kevin.tian@intel.com> Signed-off-by:
Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/9-v3-328044aa278c+45e49-iommu_probe_jgg@nvidia.com Signed-off-by:
Joerg Roedel <jroedel@suse.de>
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