diff options
| author | Hector Martin <marcan@marcan.st> | 2023-09-22 17:55:23 +0300 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2023-09-25 12:37:19 +0300 |
| commit | c7bd8a1f45bada7725d11266df7fd5cb549b3098 (patch) | |
| tree | c630d205dc82bd1f09fe6b387982b05d9c92aeea /drivers/iommu | |
| parent | 7accef5353746caf75a70e9d6f2ac257f247bd78 (diff) | |
| download | linux-c7bd8a1f45bada7725d11266df7fd5cb549b3098.tar.xz | |
iommu/apple-dart: Handle DMA_FQ domains in attach_dev()
Commit a4fdd9762272 ("iommu: Use flush queue capability") hid the
IOMMU_DOMAIN_DMA_FQ domain type from domain allocation. A check was
introduced in iommu_dma_init_domain() to fall back if not supported, but
this check runs too late: by that point, devices have been attached to
the IOMMU, and apple-dart's attach_dev() callback does not expect
IOMMU_DOMAIN_DMA_FQ domains.
Change the logic so the IOMMU_DOMAIN_DMA codepath is the default,
instead of explicitly enumerating all types.
Fixes an apple-dart regression in v6.5.
Cc: regressions@lists.linux.dev
Cc: stable@vger.kernel.org
Suggested-by: Robin Murphy <robin.murphy@arm.com>
Fixes: a4fdd9762272 ("iommu: Use flush queue capability")
Signed-off-by: Hector Martin <marcan@marcan.st>
Reviewed-by: Neal Gompa <neal@gompa.dev>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20230922-iommu-type-regression-v2-1-689b2ba9b673@marcan.st
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/apple-dart.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/iommu/apple-dart.c b/drivers/iommu/apple-dart.c index 2082081402d3..0b8927508427 100644 --- a/drivers/iommu/apple-dart.c +++ b/drivers/iommu/apple-dart.c @@ -671,8 +671,7 @@ static int apple_dart_attach_dev(struct iommu_domain *domain, return ret; switch (domain->type) { - case IOMMU_DOMAIN_DMA: - case IOMMU_DOMAIN_UNMANAGED: + default: ret = apple_dart_domain_add_streams(dart_domain, cfg); if (ret) return ret; |