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| author | Jason Gunthorpe <jgg@nvidia.com> | 2023-11-01 20:28:11 -0300 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2023-11-27 10:33:25 +0100 |
| commit | 34e2dccbb30baf7e5502bae382722aacbbfddc5b (patch) | |
| tree | f2858c93d8f8ddec35ae3449cea7950a38260244 /MAINTAINERS | |
| parent | 2cc14f52aeb78ce3f29677c2de1f06c0e91471ab (diff) | |
| download | linux-stable-34e2dccbb30baf7e5502bae382722aacbbfddc5b.tar.gz linux-stable-34e2dccbb30baf7e5502bae382722aacbbfddc5b.tar.bz2 linux-stable-34e2dccbb30baf7e5502bae382722aacbbfddc5b.zip | |
iommu: Flow ERR_PTR out from __iommu_domain_alloc()
Most of the calling code now has error handling that can carry an error
code further up the call chain. Keep the exported interface
iommu_domain_alloc() returning NULL and reflow the internal code to use
ERR_PTR not NULL for domain allocation failure.
Optionally allow drivers to return ERR_PTR from any of the alloc ops. Many
of the new ops (user, sva, etc) already return ERR_PTR, so having two
rules is confusing and hard on drivers. This fixes a bug in DART that was
returning ERR_PTR.
Fixes: 482feb5c6492 ("iommu/dart: Call apple_dart_finalize_domain() as part of alloc_paging()")
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://lore.kernel.org/linux-iommu/b85e0715-3224-4f45-ad6b-ebb9f08c015d@moroto.mountain/
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com>
Link: https://lore.kernel.org/r/0-v2-55ae413017b8+97-domain_alloc_err_ptr_jgg@nvidia.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'MAINTAINERS')
0 files changed, 0 insertions, 0 deletions